Setting Up Ethernet Services
  • 25 Jan 2024
  • 57 Minutes to read
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Setting Up Ethernet Services

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Article Summary

You can create and manage Ethernet services through the Traffic menus. The major steps required to create or manage services are:

  1. Define Filters (Classify Traffic): The system is designed in a way that the traffic must first be classified before sending it to any service creation function (Service mapping, bandwidth profile or filters). Three different types of filters can be defined:
  • Layer-2 filters and IPv4 filters. "Defining Filters".
  • VID Sets. "Setting Up VID Sets"
  1. Define Service Attributes:
  • Define bandwidth profiles. "Setting Up Bandwidth Regulators".
  • Define CoS mapping: Sets VLAN priority based on DSCP, IP Precedence or PCP values of the ingress frame. "Setting Up CoS Profiles".
  • Define bandwidth regulator sets. "Setting Up Bandwidth Regulator Sets".
  1. Create the Service ("Setting Up Traffic Policies"):
  • Select the filter that you defined in the first step.
  • Select the action to be applied to the traffic flow defined by the filter (Drop or Permit Traffic).
  • Assign or select one or more of the following characteristics:
    • EVC Mapping (encapsulation, Ethertype, VLAN ID)
    • CoS Mapping (PCP action, Type, CoS profile or default mapping)
    • Bandwidth profile (Regulator set if CoS Mapping is Preserve or Map, single Regulator (bandwidth profile) for default mapping or direct CoS mapping

To view a summary of the policy configurations, access the page Traffic ▶Policies.

Setting Up VID Sets

A VID set comprises one or more VLANs grouped in a logical entity. You can define VID sets for each traffic stream (Traffic-1, Traffic-2, Traffic-3 and Traffic-4) to classify the incloming traffic before sending it to the service creation function.

Once a VID set is created, you can apply it to traffic policies as a filter.

VLAN Filtering

You can create VLAN filters using the VLAN type field (S-VLAN or C-VLAN) and VLAN ID or Range.

When using VLAN filtering, you also need to select the VLAN (inner or outer VLAN) for
filtering the traffic for each policy list, e.g. Traffic-8.

To enable VLAN filtering

  1. Access the page Traffic ▶Configuration.

  2. Select which VLAN you want to filter on for each policy list, then click Apply.

For more information on specific parameters, "Traffic Configuration (System ▶Configuration ▶Traffic ▶Rate)".

Viewing VID Sets

To view all current VID sets

  1. Access the page Traffic ▶VLAN ▶VID Sets.
    The VID sets are displayed in a grid, grouped by policy list.


    Note: No VID sets are defined by default.

  2. Click the name of a policy list to view its associated VID sets in the bottom half of the
    page.

  3. To filter the VID sets for a given policy list results on the name, type, state, policy or size,
    use the VLAN Type and Filter controls, then click Search. The use of wildcards is supported.

For more information on specific parameters, refer to the following table.

VID Sets (Traffic ▶VLAN ▶VID Sets)
Policy Lists

ParameterDescription
NameThe name assigned to the policy list.
Incoming PortThe port name.
Number of VID SetsThe number of VID sets that are currently used by this policy list.

VID Sets

ParameterDescription
NameThe name assigned to the VID set.
Type

VLAN Type

The VLAN Ethertype of the VID set:
  • C-VLAN
  • S-VLAN
  • T-VLAN
StateThe state of the VID set according to its use in the traffic policy lists:
  • Free: The VID set is not assigned to a policy.
  • Mapped: The VID set is assigned to a policy.
PolicyThe name of the policy index used by this VID set.
SizeThe number of VLANs contained in the VID set.

Adding or Editing VID Sets

To add or edit a VID set

  1. Access the page Traffic ▶VLAN ▶VID Sets.

  2. Click Add to add a new VID set or click the Name of an existing VID set to edit its settings.
    The VID Set page appears.

  3. Complete or update the required fields, then click Apply.


    Note: When changing VIDs from an in-use VID set (VID set associated to an active policy), the following message will be displayed "Configuration changes are service affecting. Are you sure you want to proceed?". Click OK to proceed with your changes or Cancel to go back to the previous screen.

    For more information on specific parameters, refer to the following table.

Adding or Editing VID Sets (Traffic ▶VLAN ▶VID Sets)

ParameterDescription
NameThe name to assign to the policy list.
Policy ListAssigned when the VID set is created, the policy list indicates the traffic policy to which the VID set applies. The value here is the policy list on which the VID set will be active.
VLAN LevelThis field indicates whether the inner or the outer VLAN will be inspected by this policy list as set in the Traffic ▶Configuration page.
StateNote: Does not apply when creating a new VID set.

State of the VID set according to its use in the traffic policy lists:

  • Free: Not assigned to a policy.
  • Mapped: Assigned to a policy.
PolicyNote: Does not apply when creating a new VID set.

The name of the policy index used by this VID set.

Type

VLAN Type

The VLAN Ethertype of the VID set:
  • C-VLAN
  • S-VLAN
  • T-VLAN
VIDsSpecify a list of VIDs in the following format: [- ], [- ] ... (e.g. 1, 2, 100– 200 will include VIDs 1, 2, 100, 101, 102, 103... 200).

Note: With a catch-all filter, you must assign VID 0–4095. For untagged frames, assign VID 0.

Viewing VLAN IDs

To view the VLAN IDs’ mapping state

  1. Access the page Traffic ▶VLAN ▶VLAN IDs.
    The mapping stage of all VLAN IDs is displayed.


Note: No VLAN IDs are assigned to VID sets by default.

Traffic ▶VLAN ▶VLAN IDs

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For more information on specific parameters, refer to the following tables.

VLAN IDs (Traffic ▶VLAN ▶VLAN IDs)
Policy Lists

ParameterDescription
NameThe name assigned to the policy list.
Incoming PortThe incoming port's name.
Number of VIDs UsedThe number of VLAN that are currently used by this policy list.

VLAN IDs

ParameterDescription
VLAN IDThe VLAN ID number.
TypeThe VLAN Ethertype of the VLAN:
  • C-VLAN
  • S-VLAN
  • T-VLAN
StateIndicates the state of a specific VLAN:
  • Free: Not assigned to any VID set.
  • Assigned: Assigned to a VID set.
  • Mapped: VID set to which the VLAN is assigned and used in a traffic policy.
PolicyThe policy index number to which this VLAN ID is mapped.
VID SetIf the VLAN is assigned to a VID set, the VID set's name appears here.

Setting Up Bandwidth Regulators

You can set up bandwidth profiles (and the corresponding bandwidth regulators to enforce
them) through the Traffic ▶Regulators ▶Configuration page. Compared to shaping, traffic regulation can easily scale to a high number of services per port.

The regulators you define are used to share token between services. The number of traffic regulators that can be defined varies, depending on the model you are using. Once a bandwidth regulator has been created, you can apply it to traffic policies ("Setting Up Ethernet Services").


Note: Disabling then re-enabling a regulator resets the CBS and EBS token buckets.

To set up a bandwidth regulator

  1. Access the page Traffic ▶Regulators ▶Configuration.
    A summary of all existing bandwidth regulators is displayed.


    Note: No bandwidth regulators are defined by default.

  2. Click Add to add a new bandwidth regulator or click the Name of an existing bandwidth regulator to edit its settings.
    The New Regulator Configuration page is displayed.

  3. Complete the required fields, then click Add.

For more information on specific parameters, refer to the following table.

Regulator Configuration (Traffic ▶Regulators ▶Configuration)

ParameterDescription
Traffic Regulator Name

Name

A name identifying the bandwidth regulator.
Committed Information Rate

CIR

The average rate up to which service frames are delivered by the bandwidth regulator.

CIR-conformant frames are colored green.

Range: 0 to maximum port speed (steps of 125 kbps)

Maximum Committed Information Rate

CIR Max

The maximum CIR, expressed in kbps, that the regulator can achieve by using the shared tokens from its envelope.

Range: CIR to maximum port speed (steps of 125 kbps).

Committed Burst Size

CBS

The maximum number of kibibytes available for a burst of frames that are sent at the port's speed and remain CIR-conformant.

Note: The burst size must be greater than the port's Maximum Transmission Unit (MTU).

Minimum: Minimum: 1 KiB (steps of 1 KiB) (1024 bytes)

Note: 1 KiB of CBS is required for each 500 Mbps of CIR Max. For example, if the CIR Max is set to 1 Gbps, the minimum CBS value is 2 KiB.

Maximum: 2015 KiB (steps of 1 KiB) (1024 bytes).

Excess Information Rate

EIR

The average rate up to which excess service frames are delivered by the bandwidth regulator.

EIR-conformant frames are colored yellow.

Yellow traffic in excess of this maximum is declared red by the regulator then dropped.

Range: 0 to maximum port speed (steps of 125 kbps).

Maximum Excess Information Rate

EIR Max

The maximum EIR, expressed in kbps, that the regulator can achieve by using the shared tokens from its envelope.

Range: EIR to maximum port speed (steps of 125 kbps).

Excess Burst Size

EBS

The maximum number of kibibytes available for a burst of frames sent at the port's speed that remain EIR-conformant.

Note: Burst size must be greater than the port's MTU.

Minimum: Calculated based on the EIR Max value, where 1 KiB of EBS is required for each 1 Gbps of EIR Max.

For example, if the EIR Max is set to 4 Gbps, the minimum EBS value is 4 KiB.

Maximum: 8000 KiB (steps of 1 KiB) (1024 bytes).

Range: 1 KiB to 2015 kB (steps of 1 KiB) (1024 bytes).

Minimum: 1 KiB (steps of 1 KiB) (1024 bytes).

Note: 1 KiB of EBS is required for each 500 Mbps of EIR Max. For example, if the EIR Max is set to 1 Gbps, the minimum EBS value is 2 KiB.

Maximum: 2015 KiB (steps of 1 KiB).

Color ModeMake a selection from the drop-down list to indicate how the bandwidth profile should handle the color of the regulator's incoming traffic:
  • Color-Aware: The pre-determined level of bandwidth profile compliance for each frame is taken into account when evaluating its level of compliance.
  • Color-Blind: All incoming traffic is colored green when it initially enters the bandwidth regulator.
Coupling FlagMake a selection from drop-down list to indicate how regulator processes yellow traffic via Coupling Flag:
  • False: Yellow data is limited according to the EIR.
  • True: Yellow data is limited according to a combination of the CIR and the EIR.

Setting Up Bandwidth Regulator Sets

A bandwidth regulator set is used to regulate traffic bandwidth based on the value of the following information of the incoming frames:

  • PCP: p-bits in 802.1Q / 802.1Q-in-Q tags.
  • IP Precedence: IP precedence bits in the IPv4 ToS byte or in the IPv6 Traffic Class byte.
  • DSCP: DSCP bits in the IPv4 ToS byte or in the IPv6 Traffic Class byte.

Once a bandwidth regulator set has been created, you can assign it to traffic policies for rate enforcement based on the map type being used. ("Setting Up Ethernet Services").

Before configuring a bandwidth regulator set, you must first set up a number of traffic regulators ("Setting Up Bandwidth Regulators").

To configure the bandwidth regulator set, you must assign in the mapping table, a traffic regulator (to a specific PCP, IP precedence or DSCP value. This table has N rows, where N depends on the type of the regulator set. If the type is PCP or IP precedence, then N=8. If the type is DSCP, N=64.

To configure a bandwidth regulator set

  1. Access the page Traffic ▶Mapping ▶Bandwidth Regulator Sets.
    A listing of the existing bandwidth regulator sets is displayed. For more information on specific parameters, refer to the table at the end of this procedure.

  2. Click the Add button to add a new bandwidth regulator sets or click the name of an existing bandwidth regulator set to edit its settings.

  3. Complete the required fields, then click Apply.

For more information on specific parameters, refer to the following table.

BWR Set Configuration (Traffic ▶Mapping ▶Bandwidth Regulator Sets)

ParameterDescription
IndexThe unique identifier assigned to the bandwidth regulator set.
NameName of the bandwidth regulator set.
TypeSpecifies the type of priority upon which the bandwidth regulator set is based. The type you choose may be one of the following:
  • PCP: Priority Code Point mapping.
  • IP Precedence: IP precedence mapping.
  • DSCP: Differentiated Services Code Point mapping.
Reference CountThe number of policies that are currently using this bandwidth regulator set.

Note: This parameter is only visible for existing sets.

PCP or IP Precedence or DSCP [IN]PCP, IP precedence or DSCP value of the incoming frame.
Bandwidth RegulatorThe bandwidth regulator to use when regulating the traffic flow with this PCP, IP precedence or DSCP value.
Enable RegulatorEnable or disable traffic regulation for this PCP, IP precedence or DSCP value.

Setting Up CoS Profiles

A CoS profile is used to map an input frame to a Layer-2 class of service based on the conformance level (Green/Yellow) of the incoming traffic and on the value of the following information of the incoming frames:

  • PCP: p-bits in 802.1Q / 802.1Q-in-Q tags.
  • IP Precedence: IP precedence bits in the IPv4 ToS byte or in the IPv6 Traffic Class byte.
  • DSCP: DSCP bits in the IPv4 ToS byte or in the IPv6 Traffic Class byte.

Once a CoS profile is created, you can apply it to traffic policies for CoS mapping and bandwidth policing. "Setting Up Ethernet Services".

To set up the CoS profile, you need to assign in the mapping table, a class of service value (0–7) to the outgoing traffic based on the conformance level (Green/Yellow) of the incoming traffic and on the mapping entry. The mapping table has N rows, where N depends on the type of the CoS profile. If the CoS profile type is PCP or IP precedence then N=8. If the CoS profile is a DSCP, N=64.

To set up a CoS profile

  1. Access the page Traffic ▶Mapping ▶CoS Profiles.
    A list of existing CoS profiles is displayed. Four commonly-used profiles have been preconfigured.

  2. Click the Add button to add a new CoS profile or click the Name of an existing CoS profile to edit its settings.

  3. Complete the required fields, then click Apply.

For more information on specific parameters, refer to the following table.

CoS Profile Configuration (Traffic ▶Mapping ▶CoS Profiles)

ParameterDescription
NameThe name identifying the CoS profile.
TypeSpecifies the type of priority the CoS profile will use when mapping incoming frames to a Layer-2 class of service. The type you choose may be one of the following:
  • PCP: Priority Code Point mapping.
  • IP Precedence: IP precedence mapping.
  • DSCP: Differentiated Services Code Point mapping.
Decode DEIEnable this check box to make the unit decode the pre-marking color from the DEI bit (Drop Eligible Indicator). Otherwise, the userdefined pre-color is used. This parameter is only available when the PCP CoS profile type is selected
Encode Using DEIEnable this check box to make the unit control the DEI bit in an SVLAN tag. If this field is enabled and the outgoing frame is marked yellow, then the DEI bit is set to 1; if not, the DEI bit is set to 0.
Reference CountThe number of policies that are currently using this CoS profile. This parameter is only visible on existing profiles.
PCP or IP Precedence or DSCP [IN]The input value of the incoming frame for PCP, IP precedence or DSCP type frames.
Pre-Marking ColorThe pre-marking color to assign to the input frame that has this PCP, IP precedence or DSCP value.
Green [OUT]The CoS value for use with outgoing green frames. This value is selected if either of the following is true:
  • The result of the bandwidth regulator assigned to this entry is green.
  • The pre-marking color is green, and no bandwidth regulator is assigned to this entry.
Yellow [OUT]The CoS value for use with outgoing yellow frames. This value is selected if any of the following is true:
  • The result of the bandwidth regulator assigned to this entry is yellow.
  • The pre-marking color is yellow, and no bandwidth regulator is assigned to this entry.
  • The frame has passed through a color-aware bandwidth policer and has been marked as yellow (due to the depletion of its CIR bucket).

Setting Up Port CoS-to-PCP Mapping

A port CoS mapping is used to control the class of service assigned to the outer VLAN tag of input frames on which a dual VLAN tag action (e.g. push-push or push-replace) was applied in the unit. There is one configurable port CoS mapping for each physical or logical (LAG) port in the system.

The Port CoS mapping defines how to map the PCP (Priority Code Point) value of the outer VLAN tag based on the conformance level (Green/Yellow) of the outgoing frame and on the PCP value of its inner VLAN tag.
The mapping configuration is a translation table from one Service Provider's priority scheme to another's. Consequently, if you are not putting traffic through multiple Service Providers' networks, you do not need to modify the values in this page.

To configure port CoS mapping values

  1. Access the page Traffic ▶Mapping ▶Port CoS Mappings.
    The Port CoS Mapping Configuration page opens. All the unit’s physical ports and logical (LAG) ports are listed in a grid.

  2. Click a port or LAG from the list to select it and configure its port CoS mapping.
    The port’s CoS-to-PCP mapping details are displayed.

  3. Use the information in the table below to configure the port’s CoS-to-PCP mapping details, then click Apply.

The system returns to the listing of ports in the previous page.

Port CoS-to-PCP Mappings (Traffic ▶Mapping ▶Port CoS Mappings)

ParameterDescription
Port NameThe outgoing port (physical or LAG) to which this CoS mapping applies. This value corresponds to the port you selected in the previous page.
Encode Using DEISelect this box to instruct the unit to control the DEI (Drop Eligible Indicator) bit in the outer S-VLAN or T-VLAN tag.

If this field is enabled and the outgoing frame is marked yellow, then the DEI bit is set to 1; if not, the DEI bit is set to 0.

Note: If your network supports this feature, it is recommended that you enable this box.

CoS → PCP Mappings Table

ParameterDescription
CoS [INNER]All possible PCP values for the inner VLAN tag of the outgoing frame are listed in this column of the mapping table.

These values are determined by the CoS profile configuration in the traffic policy applied to the incoming traffic. You cannot modify these values.

Green [OUT]For each row in the mapping table, make a selection from the dropdown list to assign a CoS-to-PCP value (0-7) for use in the outer VLAN tag of outgoing green frames.

This value is selected if either of the following are true:

  • The result of the bandwidth regulator assigned to this entry is green.
  • The pre-marking color is green and no bandwidth regulator is assigned to this entry.
Yellow [OUT]For each row in the mapping table, make a selection from the dropdown list to assign a CoS-to-PCP value (0-7) for use in the outer VLAN tag of outgoing yellow frames. This value is selected if any of the following are true:
  • The result of the bandwidth regulator assigned to this entry is yellow
  • The pre-marking color is yellow and no bandwidth regulator is assigned to this entry.
  • The frame has passed through a color-aware bandwidth policer and has been marked as yellow due to the depletion of its CIR bucket.

Setting Up Traffic Policies

Once you have set up the filters, bandwidth regulators, CoS profiles, queues, envelopes and bandwidth regulator sets, you are ready to assign them to a traffic policy so they can become a service.


Note: On the GT Performance Element, default policies are preconfigured to pass traffic transparently between PORT-1 and PORT-2, as well as between PORT-3 and PORT-4. You can disable or reconfigure these policies as needed for your application.

To set up a traffic policy

  1. Access the page Traffic ▶Policies ▶Configuration.
    The Policy Lists page opens. The configuration for the selected traffic flow are displayed.


    Note: Users can click on the arrow buttons (Next and Previous), located on either side of the Apply or Rest buttons, to sort through policies.

  2. Select the appropriate traffic flow from the Policy Lists frame by clicking its name.
    The configuration information is refreshed onscreen. The details for Traffic-n pertain to Port-n.

  3. Apply filter to search through the list.

  4. Click a policy index number from the Policy Configuration – Traffic-n frame.
    The Traffic-n [n-x] Policy Configuration page opens.

  5. Use the information in the table "Policy Configuration (Traffic ▶Policies ▶Configuration)" and the steps below to configure the traffic policy, then click Apply.


    Notes:
    The fields available for configuration vary, depending on the Encapsulation and the PCP action you select.
    When making changes to any parameter of an active policy, the following message will be displayed "Configuration changes are service affecting. Are you sure you want to proceed?". Click OK to proceed with your changes or Cancel to go back to the previous screen.

Traffic ▶Policies ▶Configuration
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To edit a traffic policy

  1. Enable the Policy , then select the Outgoing Port and Queuing Profile to which the policy applies by making a selection in each of the drop-down lists.

  2. Select the Filter type and Filter to classify traffic and the required Action.


    Note: Only the traffic matching the filter will have the rules applied to it. The maximum number of traffic policies using a specific filter (L2, IPv4 or IPv6) or a specific VID set is limited by the type of unit you use. Refer to your unit’s datasheet for the maximum number of specific filters possible for traffic policies.

  3. Select the EVC mapping encapsulation option and the required EVC mapping parameters. "EVC Encapsulation Options".

  4. Select the PCP action for CoS mapping to perform if required. Refer to PCP Action
    Options
    .

  5. If you selected the PCP action MAP or Preserve , enable one or two traffic mapping choices, select the Type of traffic mapping to perform, select the CoS Profile to apply and select the bandwidth Regulator Set to apply.

  6. If you selected the PCP action MAP or Preserve , enable one or two traffic mapping choices, select the Type of traffic mapping to perform, select the CoS Profile to apply and select the bandwidth Regulator Set to apply.

  7. If you selected the PCP action Direct, complete the Direct mapping parameters.

  8. Enable the Monitoring port, if required, then choose the port to which traffic is forwarded for monitoring from the drop-down list.

  9. (Optional) Enter a name for the flow.

For more information on specific parameters, refer to the following table.


Note: Users are limited by 2000 enabled policies for shared traffic-5 and traffic-6.

Policy Configuration (Traffic ▶Policies ▶Configuration)

ParameterDescription
Enable PolicySelect this box to activate the policy.
Outgoing PortThe egress port assigned to this policy.
Queuing ProfileA drop-down list with options for the queuing profile associated with this outgoing port. By default, default queuing-profile is selected.
Filter TypeThe filter type (Layer-2 filter, IPv4 filter, IPv6 filter or VID set ) used to classify traffic.
FilterThe name of the filter. You must select a filter name from the dropdown list.

Note: The catch-all filter enables you to monitor all traffic on a port.

ActionThe action applied to traffic that matches the filter. Make a selection from the drop-down list:
  • Drop Traffic: The traffic matching the filter is dropped. Policy statistics are collected as part of this policy.
  • Permit Traffic: The traffic matching the filter is counted in the statistics and then forwarded. Policy statistics are collected as part of this policy.
  • MGMT-OAM: The traffic matching the filter is forwarded to the CPU so that it can be processed. No policy statistics are collected as part of this policy.
  • MGMT-OAM & Drop: The traffic matching the filter is forwarded to the CPU so that it can be processed, then it is dropped. Policy statistics are collected as part of this policy.
  • MGMT-OAM & Forward: The traffic matching the filter is forwarded to the CPU so that it can be processed and forwarded. Policy statistics are collected as part of this policy.
Note: The None, MGMT-OAM, MGMT-OAM & Drop and MGMTOAM & Forward actions are not supported when the filter type is VID set.
Enable MonitoringEnable or disable the monitoring port.
Monitor PortThe port to which traffic is forwarded for monitoring.

EVC Mapping

ParameterDescription
EncapsulationSelect one of the following encapsulation methods:
  • None: Regulate traffic based on PCP, IP precedence or DSCP values.
  • Push: Add a VLAN tag.
  • Pop: Remove the outer VLAN tag, if any.
  • Replace: Perform an action similar to Push, but rather than adding a new VLAN tag, replace the VLAN tag with the information provided by the Ethertype and VLAN ID.

    Note: This action requires a filter that checks for the presence of at least one VLAN tag.

  • Preserve VLAN - New CFI/PCP: Keep the VLAN tag while allowing the CFI/PCP values to be modified.
  • Push & Preserve: Add a new VLAN tag using the VLAN ID of the inner VLAN, if any.
  • Push & Push: Add two VLAN tags (Q-in-Q).
  • Push & Replace: Add a new outer VLAN tag and replace the inner VLAN tag with the information provided by the Ethertype and VLAN ID.
  • Pop & Replace: Pop the outer VLAN tag and replace the inner VLAN tag with the information provided by the Ethertype and VLAN ID.

    Note: This action requires a filter that checks for the presence of two VLAN tags.

  • Pop & Pop: Pop both the inner and the outer VLAN tags (Q-in-Q).

    Note: The details of this option will vary depending on the available PCP actions.

EthertypeThe Ethertype of the VLAN to be added (if any).

Possible values:

  • C-VLAN: 0x8100
  • C-VLAN: 0x8100
  • T-VLAN: 0x9100 (or 0x88A8)
Note: The values assigned to the S-VLAN and T-VLAN Ethertypes can vary, depending on the S-VLAN Ethertype value selected in the page System ► Configuration ►Mode. For details, see "Configuring General System Settings".
VLAN IDVLAN ID of the VLAN to be added (if any).

Possible values range between 0–4,095.

CoS Mapping

ParameterDescription
PCP ActionThe PCP (Priority Code Point) action to perform.

Possible values are:

  • Preserve: Keep the PCP value or gather its value from the CoS profile.
  • Direct: Use the direct mapping options.
  • Map: Map the PCP/DEI values according to the selected CoS Profile.
For each PCP action, there may be one or two traffic mapping choices. If the frame does not match the first or the second choice, default PCP values are used.

Note: The choices may vary depending on the Encapsulation option and on the PCP action you selected.

EnableEnable or disable the first and second traffic mapping choices.
TypeThe type of Layer-2 traffic mapping to perform for the first and second choices.

Possible values are:

  • PCP VLAN: Priority Code Point (p-bits) in 802.1Q tags.
  • PCP VLANinVLAN: Priority Code Point (p-bits) in 802.1Q-in-Q tags.
  • IP Precedence: IP precedence bits in the IPv4 ToS
byte or in the IPv6 Traffic Class byte.
  • DSCP: DSCP bits in the IPv4 ToS byte or in the IPv6 Traffic Class byte.
  • CoS ProfileCoS profile to apply from the list. The list includes the default CoS profile and the ones you created.
    Regulator SetThe bandwidth regulator set to apply from the list. The list includes the bandwidth regulator sets you created.

    Default/Direct Bandwidth Regulator

    ParameterDescription
    Enable Bandwidth RegulationActivates a default bandwidth regulator. If the PCP action is Map and the traffic does not match the configured maps, direct default mapping is used.
    Pre-MarkingPre-mark, with a specific color, the traffic that does not match the first and second traffic mapping choices. This option has no effect if the enabled bandwidth regulator is color-blind. In addition, if no bandwidth regulator has been enabled, this option selects the default green/yellow CFI & PCP values to be used in the outgoing frames.
    • Green traffic uses tokens from the CIR bucket until depleted, at which time it will be tagged as Yellow data.
    • Yellow traffic uses tokens from either the CIR + EIR buckets or just the EIR bucket, depending on how the coupling flag is set in the regulator. Once the CIR + EIR tokens are depleted, this traffic will be tagged as Red data (red traffic is dropped).
    Note: Data cannot be pre-marked as Red if its bandwidth regulator has been disabled. In such circumstances, using Drop Traffic instead may be advisable.

    The traffic color affects how the regulator handles the traffic.

    RegulatorThe bandwidth regulator associated with the traffic matched by this policy.

    Note: Bandwidth regulators on the Skylight element: GT are assigned to a specific port and cannot subsequently be shared.

    CFI/DEI

    PCP

    The default CFI and PCP values to be applied if the traffic does not match the first and second traffic mapping choices.

    The offers flexibility with regards to how port combinations are configured in its traffic policies; however, not all port combinations are possible.

    EVC Encapsulation Options

    Use the encapsulation options to perform EVC mapping actions.

    None

    Use this option when no VLAN ID manipulation is required for the selected traffic flow and you want to regulate bandwidth based on PCP, IP precedence or DSCP values.

    The table below shows the valid configurations of the first and second choices.

    Options for an Encapsulation of NONE

    ParameterFirst ChoiceSecond Choice
    TypePCP VLANinVLAN

    PCP VLAN

    IP precedence, DSCP

    PCP VLAN, IP precedence, DSCP

    IP precedence, DSCP

    PCP VLAN, PCP VLANinVLAN

    CoS ProfileCoS profileCoS profile
    BWR SetBWR setBWR set

    Preserve VLAN – New CFI/PCP

    Use this option to keep the VLAN tag and permit modification of the CFI/PCP values. The PCP action Preserve is not supported by this encapsulation option. When using this option, you may select a PCP action for CoS mapping if required.


    Note: This action requires a filter that checks for the presence of at least one VLAN tag.

    Push

    Use this option to push (add) a VLAN tag onto an untagged frame or push an outer tag (Q-in-Q) onto a tagged frame. When using the Push option, you may select a PCP action for CoS mapping if required. "PCP Action Options".

    Push & Preserve

    Use this option to push the specified VLAN tag onto an untagged frame. If the frame is already tagged, the VLAN ID in the outer tag of the frame is passed on to the tag that is added on top of it. When using the Push & Preserve option, you may select a PCP action for CoS mapping if required.

    Push & Push

    Use this option to push the specified VLAN tags (Q-in-Q) onto a tagged or untagged frame. When using the Push & Push option, you may select the PCP action for CoS mapping if required.

    Push & Replace

    Add a new outer VLAN tag and replace the inner VLAN tag with the information provided by the Ethertype and VLAN ID. When using the Push & Replace option, you may select the PCP action for CoS mapping if required.

    Replace

    This action is similar to the Push action but rather than adding a new VLAN tag, it replaces the VLAN tag with the information provided by Ethertype and VLAN ID parameters. The PCP action Preserve is not supported by this encapsulation option. However, the user can use the PCP action Map and the default 8P0D-8P0D CoS profile to preserve the incoming PCP value.


    Note: This action requires a filter that checks the presence of at least one VLAN tag.

    Pop

    Use this option to remove the outer VLAN tag.

    Pop & Replace

    Use this option to pop the outer VLAN tag and replace the inner VLAN tag with the information provided by Ethertype and VLAN ID parameters. The PCP action Preserve is not supported by this encapsulation option. However, the user can use the PCP action Map and the default 8P0D-8P0D CoS Profile to preserve the incoming PCP value.


    Note: This action requires a filter that checks the presence of two VLAN tags (Q-in-Q).

    Pop & Pop

    Use this option to remove two VLAN tags (Q-in-Q). When using the Pop & Pop option, you may select a PCP action for CoS mapping if required.

    PCP Action Options

    Use the PCP action options to perform different Priority Code Point actions.

    Preserve

    Use this option to copy the PCP values from the first VLAN (if any) to the pushed VLAN tag. If the frame is not tagged, you may map the PCP values from an IP precedence / DSCP CoS profile. It is also possible to select a bandwidth regulator set for bandwidth policing.

    The table below shows the valid configurations of the first and second choices for this
    encapsulation option.

    Options for the PCP Action PRESERVE

    ParameterFirst ChoiceSecond Choice
    TypeIP Precedence / DSCPN/A
    CoS ProfileCoS profileN/A
    BWR SetOptionalN/A

    Direct

    Use this option to force PCP values to the default green or yellow values based on the result of the bandwidth regulator or the pre-marking color. The pre-marking color red is ignored if the default bandwidth regulator is disabled.


    Note: The first and second choices are ignored.

    Map

    Use this option to map and regulate traffic based on PCP, IP precedence or DSCP values. The first and second choices can be used.

    The table below shows the valid configurations of the first and second choices.

    Options for the PCP Action MAP

    ParameterFirst ChoiceSecond Choice
    TypePCP VLANinVLAN

    PCP VLAN

    IP precedence, DSCP

    PCP VLAN, IP precedence, DSCP

    IP precedence, DSCP

    PCP VLAN, PCP VLANinVLAN

    CoS ProfileCoS profileCoS profile
    BWR SetOptionalOptional

    Viewing a Summary of the Policy Configurations

    Use this page to view how the unit's traffic policies have been configured.
    Filters based on VID sets use direct access to identify the corresponding policy for an incoming frame. Each frame’s VLAN ID is analyzed and the value of the VLAN ID is used to directly access the appropriate policy to apply.

    To view a summary of the policy configurations

    1. Access the page Traffic ▶Policies ▶Configuration.
      A listing of all policies associated with the unit is displayed.
      The total number of traffic policies found in the system is given in the lower-left corner of the page, as well as the index values of the items currently displayed on-screen (for example, [1–25] of 250). Use the page navigation links in the lower-right corner of the page to move between the pages of results.

    2. (Optional) Click the name in the Policy Lists to view the summary of the policy configurations of a particular port.

    3. (Optional) Select a filter, using the drop-down menu, and enter a corresponding keyword in the text field to search through policy list.

    For more information on specific parameters, refer to the following table.

    Policy (Traffic ▶Policies ▶Configuration)
    Policy List

    ParameterDescription
    NameName of the traffic policy.
    Incoming PortName of the port of the traffic policies.
    Number of PoliciesNumber of policies.

    Policy Configuration

    ParameterDescription
    IndexThe position of the rule in the policy list.
    StateThe policy may be enabled or disabled. Disabled policies are ignored when the rules are applied to incoming data.
    ActionAction that the policy applies to data that it matches.
    Filter NameName of the filter assigned to the policy.
    TypeThe filter type (L2, IPv4, IPv6 or VID set) used to classify traffic.
    MonitorThe name of the active monitoring port associated with this policy.
    RegulatorThe name of the bandwidth regulator assigned to this policy.
    Outgoing PortThe name of the outgoing port to which each policy is mapped.

    To view a summary of the policy statistics

    1. Access the page Traffic ▶Policies ▶Statistics.
      A listing of all policy statistics associated with the unit is displayed. The total number of traffic policies found in the system is given in the lower-left corner of the page, as well as the index values of the items currently displayed on-screen (for example, [1–25] of 250). Use the page navigation links in the lower-right corner of the page to move between the pages of results.

    2. (Optional) Click the name in the Policy Lists to view the summary of the policy statistics of a particular port.

    3. (Optional) Select a filter, using the drop-down menu, and enter a corresponding keyword in the text field to search through policy list

    For more information on specific parameters, refer to the following table.

    Policy (Traffic ▶Policies ▶Statistics)
    Policy List

    ParameterDescription
    NameName of the traffic policy.
    Incoming PortName of the port of the traffic policies.
    Number of PoliciesNumber of policies.

    Policy Statistics

    ParameterDescription
    IndexThe position of the rule in the policy list.
    StateThe policy may be enabled or disabled. Disabled policies are ignored when the rules are applied to incoming data.
    ActionAction that the policy applies to data that it matches.
    Filter NameName of the filter assigned to the policy.
    Packets GoodNumber of good frames that matched the policy. A good frame is an error-free frame that has a length between 64 bytes and the maximum frame length.
    Bytes GoodTotal number of bytes in good frames that matched the policy.
    Packets BadNumber of invalid frames that matched the policy. An invalid frame is a packet whose framing is valid but contains an error within the frame, has an invalid CRC, is shorter than 64 bytes or is longer than the maximum frame length.

    Viewing Traffic Regulator Statistics

    You can view a summary and detailed traffic regulator statistics for each traffic regulator, including accepted bytes, dropped bytes, and counters that break down CIR and EIR traffic.

    To view traffic regulator statistics

    1. Access the page Traffic ▶Regulators ▶Statistics to view the statistics summary of all traffic regulators.

    2. Click the Regulator name to view detailed statistics of the selected traffic regulator.

    For more information on specific parameters, refer to the following table.

    Bandwidth Regulator Statistics (Traffic ▶Regulators ▶Statistics)

    ParameterDescription
    NameThe name assigned to the regulator.
    Accept BytesThe total number of bytes accepted by this regulator since its creation.
    Accept PacketsThe total number of frames accepted by this regulator since its creation.
    Accept L1 Rate

    (Mbps)

    The rate of accepted Layer-1 data, expressed in Mbps.

    This is the number of megabits of Layer-1 traffic accepted in the last second of transmission.

    Accept L2 Rate

    (Mbps)

    The rate of accepted Layer-2 data, expressed in Mbps.

    This is the number of megabits of Layer-2 traffic accepted in the last second of transmission.

    Drop BytesThe total dropped bytes by this regulator since the statistical count started.
    Drop PacketsTotal dropped frames by this regulator since its creation.
    Drop L1 Rate (Mbps)The rate of dropped Layer-1 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-1".

    Drop L2 Rate (Mbps)The rate of dropped Layer-2 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-2".

    Green BytesThe total number of green bytes handled by this regulator since its creation.

    Traffic that is declared green and complies with the CIR is allowed to pass through the policer without rate limitation. Green traffic in excess of this maximum is declared yellow by the regulator and is subject to EIR regulation.

    Green PacketsThe total number of green bytes handled by this regulator since its creation.

    Traffic that is declared green and complies with the CIR is allowed to pass through the policer without rate limitation. Green traffic in excess of this maximum is declared yellow by the regulator and is subject to EIR regulation.

    Green L1 Rate (Mbps)The rate of green Layer-1 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-1".

    Green L2 Rate (Mbps)The rate of green Layer-2 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-2".

    Yellow BytesThe total number of yellow bytes handled by this regulator since its creation.

    Yellow traffic in excess of this maximum is declared red by the regulator, then dropped.

    Yellow PacketsThe total number of yellow frames handled by this regulator since its creation.

    Yellow traffic in excess of this maximum is declared red by the regulator, then dropped.

    Yellow L1 Rate (Mbps)The rate of yellow Layer-1 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-1".

    Yellow L2 Rate (Mbps)The rate of yellow Layer-2 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-2".

    Red BytesThe total number of red bytes handled by this regulator since its creation.
    Red PacketsThe total number of red frames handled by this regulator since its
    creation.
    Red L1 Rate (Mbps)The rate of red Layer-1 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-1".

    Red L2 Rate (Mbps)The rate of red Layer-2 data, expressed in Mbps.

    Note: Only applies if the Regulator Working Rate parameter in the Traffic ▶Configuration page has been set to "Layer-2".

    Understanding Traffic Shaping via H-QoS

    Traffic shaping is used to reduce traffic burstiness for an outgoing interface by delaying some or all frames. It is commonly applied at the network edges to control traffic entering the network. With shaping, you can control the volume of traffic being sent into a network during a specified period (bandwidth throttling) or the maximum rate at which the traffic is sent (rate limiting). Traffic shaping can be performed in both directions: from the UNI to the network and from the network to the UNI. For details, see Setting Up Traffic Shaping.

    With the GT Performance Element, traffic shaping is achieved through Hierarchical Quality of Service. Quality of Service (QoS) is a way to optimize and/or guarantee traffic performance by differentiating between high- and lower priority traffic and treating each differently. Traffic is differentiated by means of its assigned Class of Service, based on the value of the PCP field in its Ethernet frames. With QoS, the latency of high-priority traffic is improved through accelerated transmission to the network.

    Hierarchical QoS (H-QoS) is an extension of traditional QoS because it increases the usable bandwidth for lower classes of services by recycling the unused bandwidth (tokens) left over from higher classes of service.

    Multiple levels of Class of Service can be created:

    • The first level is quality of service per Class of Service for a single customer service.
    • The second level is quality of service for all Classes of Service for a single customer service.

    Because of the possibility to share bandwidth between classes of services, H-QoS is the preferred approach over traditional QoS. The GT Performance Element includes an MEF 10.3 H-QoS bandwidth sharing implementation.

    In the figure below, three classes of service share the same total bandwidth. Bandwidth sharing enables bandwidth to be handed down from higher classes of service to lower classes of service.

    GT user manual figure.PNG

    In this example of MEF token sharing, a coupling flag (CF) is used to share unused bandwidth (shown as a dotted line) from either Excess Information Rate (EIR) traffic or Committed Information Rate (CIR) traffic with a lower Class of Service.

    The bandwidth profile algorithm that enables sharing unused bandwidth between flows inside an EVC is defined by the MEF 10.3 (the MEF uses the term envelope).

    Setting Up H-QoS

    Implementing H-QoS involves multiple configuration tasks, as listed below:

    • Configure queues to handle the unit’s H-QoS traffic, as described in Configuring Queues for H-QoS.
    • Create queuing profiles for each port or LAG on the unit, as described in Configuring HQoS Queuing Profiles.
    • Create envelopes (EVC), which define MEF 10.3 token sharing between flows, as described in Creating a Shaping Envelope.
    • Create a policy to refer to a queue profile that maps traffic on a queue, as described in Setting Up Ethernet Services.


    Note: Before you begin, you must ensure that you have pre-determined how many queues you plan to implement, as well as the parameters of each.

    Understanding BLUE

    The BLUE algorithm is used by the shapers for queue management.

    BLUE is an enhancement to the RED congestion avoidance algorithm; it offers the same benefits as RED and provides similar queue monitoring. The main difference between BLUE and RED is that BLUE also uses the queue packet loss and utilization history. Its use of a drop probability is more friendly with TCP global synchronization and reduces the number of TCP retransmissions.

    Each shaper uses BLUE to manage queues based on link use. It maintains a marking probability (pm) that is used to either mark or drop the frames. If the queue is continually dropping the frames, pm is increased by the factor d1. If the queue is empty or link is idle, pm is decreased by the factor d2.


    Note: The value of d1 should be set significantly larger than that of d2. This is because link is underused when congestion management is either too aggressive or too conservative, but frame loss occurs only when congestion management is too conservative.

    BLUE uses also freeze_time, which determines the time interval between two successive updates of pm. It allows the changes in the marking probability to take effect before the value is updated again. The BLUE algorithm is expressed as follows:

    Upon Qlen > L1) event:
    if ( ( now - last_update) > freeze_time )
    pm := pm + d1
    last_update := now
    Upon Qlen < L2event:
    if ( ( now - last_update) > freeze_time)
    pm := pm - d2
    last_update := now
    

    To disable the BLUE algorithm
    You might need to disable BLUE if your test equipment does not support it.

    1. Access the page Traffic ▶Shaping ▶Port ▶Shaper.
      The Traffic Shaping Port Shaper Configuration page is displayed.

    2. Click the traffic shaper Name to edit its settings.

    3. Remove the check mark from the Enable box, then click Apply.

    Configuring Queues for H-QoS

    The Skylight element GT has six dedicated queues per port, as well as 12 user-assignable queues. When in LAG mode, the queues dedicated to the LAG’s ports are unavailable because the LAG’s own queues are used instead.


    Note: Definitions: RPTQ stands for Ring Pass Through Queue. ADQ stands for Adequate Queuing Profile. DQP stands for Default Queuing Profile.You do not have to configure a queue for H-QoS if you do not plan to use the queue.

    ParameterDescription
    1 Gbps PortsFour dedicated queues per 1 Gbps port:
    • Port-1
    • Port-2
    • Port-3
    • Port-4
    • Port-9
    • Port-10
    • Port-11
    • Port-12
    • LAG-1
    • LAG-2
    • LAG-4
    • LAG-5
    • LAG-6

    To configure queues for H-QoS

    1. Access the page Traffic ▶Shaping ▶Queue ▶Configuration.
      The Traffic Shaping Queue Configuration page opens. All the unit’s queues are listed in a grid.

    2. Select a queue from the list to configure by clicking it.
      The queue’s details are displayed.

    3. Use the information in the table below to configure the queue, then click Apply.

    For more information on specific parameters, refer to the following table.

    Queue Settings (Traffic ▶Shaping ▶Queue ▶Configuration)

    ParameterDescription
    Outgoing PortTraffic from this queue will egress on the port specified here.
    TypeThe type of queue is displayed here

    Available options are:

    • User-assignable
    • Dedicated
    NameThe name assigned to this shaper.

    Queue Scheduling

    ParameterDescription
    Priority (0–7)The strict scheduling priority assigned to this queue: 7 is the highest and 0 the lowest priority.

    Note: This value is provided for your convenience; however, it cannot be modified. When several queues have the same priority, scheduling is carried out in a round-robin fashion.

    Bandwidth Profile Parameters

    ParameterDescription
    Shaping StateMake a selection from the drop-down list to enable or disable the shaper. The rate information you provide in this page is applied to control traffic flow.

    Note: The BLUE and queue scheduling features remain functional when the shaper is disabled.

    Shaping ModeThe shaping mode determines whether the queue's bandwidth profile action is performed on the frames as they enter the unit (ingress) or after an EVC mapping action is applied by a traffic policy (egress).

    For example, if a traffic policy is configured to push a VLAN tag, setting the shaping mode to Ingress will apply the bandwidth profile before the VLAN tag is pushed. Setting the shaping mode to Egress will apply the bandwidth profile to the traffic after the VLAN tag is pushed.

    Make a selection from the drop-down list to indicate either ingress or egress shaping.

    CIR

    Committed Information Rate

    The average shaping rate of green frames, expressed as a multiple of 125 kbps

    This is the shaper's average output rate

    Maximum CIRThe maximum CIR, expressed in kbps, that the shaper can achieve by using the shared tokens from its envelope
    CBS

    Committed Burst Size

    The shaping burst of green frames, expressed as a multiple of 1 KiB (1024 bytes).

    Acceptable values range from 1 to 2047 KiB.

    EIR

    Excess Information Rate

    The average shaping rate of yellow frames, expressed as a multiple of 125 kbps

    This is the shaper's average output rate.

    Maximum EIRThe maximum EIR, expressed in kbps, that the shaper can achieve by using the shared tokens from its envelope
    EBS

    Excess Burst Size

    The shaping burst of yellow frames, expressed as a multiple of 1 KiB (1024 bytes)

    Acceptable values range from 1 to 2047 KiB.

    Coupling FlagEnable this check box to allow overflow tokens not used for Service

    Frames declared Green can be used as Yellow tokens.

    Queue Management Parameters

    ParameterDescription
    Maximum Queue Size (KiB)The buffer's size, expressed in KiB (1024 bytes).

    Acceptable values range from 16 KiB–2044 KiB.

    The Maximum Queue Size must be greater than the Yellow Threshold value.

    Yellow Threshold (KiB)When the queue length reaches this threshold, tail-dropping is performed on new packets with yellow marking. Acceptable values range from 16 KiB to the Maximum Queue Size value indicated above.
    BLUE StateSelect to enable the BLUE queue management algorithm.

    The buffer is used to queue frames for later transmission. If the BLUE state is enabled, congestion management is ruled primarily by the BLUE queue management algorithm. If not, it is managed through simple tail-drops.

    BLUE Queue Full Threshold (%)Once the queue fills to the specified percentage, the marking probability will be increased. The current range is from 5–98. The Blue Queue Full Threshold must be equal or greater than the Blue Queue Empty Threshold.
    BLUE Queue Empty Threshold (%)Once the queue empties to the specified percentage, the marking probability will be decreased. The current range is from 5–98. The Blue Queue Empty Threshold must be less than the Blue Queue Full Threshold.
    BLUE Marking Probability Freeze Time (μs)This value determines the minimum interval time, expressed in microseconds (in increments of 10) between two successive updates of marking probability.

    Maximum of 655350 μs

    BLUE Marking Probability Increment (%)The marking probability is incremented by this value (expressed as a step percentage) in the event of a buffer overflow.

    Notes: If this parameter is set to 0, the BLUE algorithm is disabled.

    Maximum of approximately 25%.

    BLUE Marking Probability Decrement (%)The marking probability is decremented by this value (expressed as a step percentage)if the link is idle.

    Notes: The percentage value you enter here is only an approximation; the actual configured value appears to the right of this field.

    The percentage value you enter here is only an approximation; the actual configured value appears to the right of this field.

    Maximum of approximately 25%.

    Viewing Traffic Shaping Queue Statistics

    You can view a summary and detailed statistics for each traffic-shaping queue.
    To view a summary of statistics for all traffic-shaping queues

    1. Access the page Traffic ▶Shaping ▶Queue ▶Statistics.
      The Traffic Shaping Queue Statistics page opens. All the unit’s queues are listed in a grid. For more information on specific parameters, refer to the following table.

    Tip: To edit a specific queue or view its details, select the queue from the list by clicking it.
    To clear the statistics in the Traffic Shaping Queue Statistics page, click the Clear button on the right side of the table header.

    Traffic Shaping Queue Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)

    ParameterDescription
    NameThe name assigned to this shaping queue.
    PortThe name of the port associated with this queue.
    ForwardThe total number of frames that have been forwarded by this queue.

    For details on the frame types, refer to "Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)".

    This value includes frames counted as:

    • Green forward no delay
    • Yellow forward no delay
    • Green forward with delay
    • Yellow forward with delay
    DiscardThe total number of frames that have been discarded by this queue.

    For details on the frame types, refer to "Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)".

    This value includes frames counted as:

    • Green Discard full
    • Yellow Discard full
    Discard-BLUEThe total number of frames that have been discarded by the queue management algorithm BLUE. For details on the frame types, refer to "Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶ Queue ▶Statistics)". This value includes frames counted as:
    • Green Discard BLUE
    • Yellow Discard BLUE
    CIR CompliantThe total number of frames that have been forwarded by this shaper using the CIR bucket.
    EIR CompliantThe total number of frames that have been forwarded by this shaper using the EIR bucket.

    You can view a summary and detailed statistics for each traffic-shaping queue.

    To view detailed statistics for a traffic-shaping queue

    1. Access the page Traffic ▶Shaping ▶Queue ▶Statistics.
      The Traffic Shaping Queue Statistics page opens. All the unit’s queues are listed in a grid.

    2. Select the queue from the list whose statistics you wish to view by clicking it.
      The queue’s details are displayed. For more information on specific parameters, refer to the following table.
      Tip: To clear the statistics in the Traffic Shaping Queue Statistics page, click the Clear button located above the queue details. To obtain the latest statistics from the unit, click the Refresh button located beside the Clear button. Select the Poll Every n Seconds box and enter the number of seconds between each time the statistics are automatically refreshed.

    Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)

    ParameterDescription
    NameThe name assigned to this shaping queue.
    PortName of the port associated with this queue.
    Green Forward No DelayThe total number of green frames/bytes in the queue when the queue is near empty, i.e. the green frames/bytes that can be dropped from the queue without delay.
    Yellow Forward No DelayThe total number of yellow frames/bytes in the queue when the queue is near empty, i.e. the yellow frames/bytes that can be dropped from the queue without delay.
    Green Forward With DelayThe total number of green frames/bytes in the queue when the queue is not empty, i.e. the green frames/bytes that will be dropped from the queue with delay.
    Yellow Forward With DelayThe total number of yellow frames/bytes in the queue when the queue is not empty, i.e. the yellow frames/bytes that will be dropped from the queue with delay.
    Green Discard FullThe total number of green frames/bytes that have been discarded by this queue.
    Yellow Discard FullThe total number of yellow frames/bytes that have been discarded by this queue.
    Green Discard BLUEThe total number of green frames/bytes that have been discarded by the queue management algorithm BLUE.
    Yellow Discard BLUEThe total number of yellow frames/bytes that have been discarded by the queue management algorithm BLUE.
    CIR CompliantThe total number of frames that have been forwarded by this shaper using the CIR bucket.
    EIR CompliantThe total number of frames that have been forwarded by this shaper using the EIR bucket.

    Configuring H-QoS Queuing Profiles

    To configure an H-QoS queuing profile

    1. Access the page Traffic ▶Shaping ▶Queuing Profile.
      The Traffic Shaping Queuing Profile page opens. All profiles created for this unit are listed in a grid.

    2. Do one of these actions:

    • Select an existing profile from the list by clicking it.
    • Click Add to create a new profile.
      The queuing profile's details are displayed.

    Tip: To only display the profiles associated with a single port or LAG, make a selection in the Port drop-down list.

    1. Use the information in the table below to configure the H-QoS queuing profile, then click Apply.
    ParameterDescription
    NameThe name assigned to the queuing profile. The name you enter can contain alphanumeric characters or special characters such as underscores and asterisks. Spaces and accented characters are not supported.

    Definitions: DQP pertains to the GX platform and stands for Default Queuing Profile. ADQ pertains to all the LT platform and stands for Available Queuing Profile.

    PortIndicate the port or LAG (for ring mode) to which this queuing profile applies by making a selection in the drop-down list.

    Note: You cannot modify this value once the queuing profile has been saved.

    PCP-0 to PCP-7PCP refers to the Class of Service (CoS) or priority associated with traffic. There are eight defined CoS, with PCP-0 being the lowest priority traffic and PCP-7 being the highest.

    Specify the queue to which you wish to send traffic assigned to each CoS by making a selection in the drop-down list. This way, you indicate the mapping between the queues and the port or LAG.

    Each user-assignable queue is assigned to a single port or LAG. An error is raised if you attempt to assign queues belonging to different ports or LAGs. Similarly, an error is raised if the queuing profile and the set of queues you are assigning do not have the same port number.

    To delete a queuing profile

    1. Access the page Traffic ▶Shaping ▶Queuing Profile.
      The Traffic Shaping Queuing Profile page opens. All profiles created for this unit are listed in a grid.

    2. Select the profile to delete from the list by clicking it.
      The queuing profile’s details are displayed.

    3. Click Delete.
      The selected queuing profile is permanently deleted; you are not prompted to confirm your actions.

    Creating a Shaping Envelope

    To create a shaping envelope

    You can create from one to six bandwidth profile envelopes using the six dedicated port queues that belong to each port. For example, you can create one bandwidth profile envelope with six queues, six bandwidth profile envelopes with one queue each, or any combination in between.

    The same logic applies to the pool of 12 user-assignable queues. You can create combinations ranging from 12 bandwidth profile envelopes of one queue, to a single bandwidth profile envelope of 12 queues.

    1. Access the page Traffic ▶Shaping ▶Envelope.
      The Traffic Shaping Envelope Configuration page opens. All envelopes created for this unit are listed in a grid.

    2. Do one of these actions:

      • Select an existing envelope from the list by clicking it.
      • Click Add to create a new envelope.

        The envelope’s details are displayed.

    Tip: To only display the envelopes associated with a single port, make a selection in the Port drop-down list at the upper-left corner of the page.

    1. Use the information in the table below to configure the envelope, then click Apply.

    Traffic Shaping Envelope Settings (Traffic ▶Shaping ▶Envelope)

    ParameterDescription
    NameThe name assigned to the queuing profile. Acceptable values are between 1 and 31 characters in length.

    The name you enter can contain alphanumeric characters or special characters such as underscores and asterisks. Spaces and accented characters are not supported.

    PortIndicate the port or LAG (for ring mode) to which this queuing profile applies by making a selection in the drop-down list.

    You cannot modify this value once the queuing profile has been saved.

    Tip: LAG-1 is always used in SFP mode for both the GT and GT-S Performance Elements.

    TypeThe type of envelope is displayed here (user-assignable, dedicated or logical) once the envelope has been populated with queues.
    Shaping ModeMake a selection from the drop-down list to indicate either ingress or egress shaping.
    Coupling FlagEnable this check box to share the tokens in this envelope in the EIR.

    Notes: All queues in an envelope must have the same coupling flag value, otherwise an error is raised.

    If you do not enable this check box, no bandwidth will be transferred between the Committed Information Rate (CIR) and Excess Information Rate (EIR) flows.

    Available Queues and Ranking ListSelect and rank the queues you wish to include in this envelope. You can assign a maximum of 12 queues to an envelope.

    Select the queues according to the ranking you wish to apply, starting with the first queue is assigned the highest rank, etc.

    Notes: Queues from different types cannot be added to the same envelope; only one type per envelope is permitted. In addition, a queue cannot be added to more than one envelope.

    You can only add queues with an active shaper to an envelope.

    To delete an envelope

    1. Access the page Traffic ▶Shaping ▶Envelope.
      The Traffic Shaping Envelope Configuration page opens. All envelopes created for this unit are listed in a grid.

    2. Select the envelope to delete from the list by clicking it.
      The envelope’s details are displayed.

    3. Click Delete.
      The selected envelope is permanently deleted; you are not prompted to confirm your actions. The system returns to the listing of envelopes in the previous page.

    Configuring a Port Shaper

    Use the Traffic ▶Shaping ▶Port ▶Shaper page to view and configure the shaping parameters assigned to outgoing ports.

    To view a summary of the outgoing ports' shaping parameters

    1. Access the page Traffic ▶Shaping ▶Port ▶Shaper.
      The Traffic Shaping Port Shaper Configuration page opens. All the unit’s outgoing ports are listed in a grid. For more information on specific parameters, refer to the following table.
      Tip: To edit a specific port's bandwidth profile parameters or view its details, select the port from the list by clicking it.

    Traffic Shaping Port Shaper Configuration (Traffic ▶Shaping ▶Port ▶Shaper)

    ParameterDescription
    PortThe name assigned to this outgoing port.
    StateThe current state of this outgoing port: enabled or disabled
    CIR (Kbps)The shaping rate of outgoing frames, expressed as a multiple of 125 Kbps.

    Range: 0 to port speed.

    CBS (KiB) (1024 bytes)The shaping burst of outgoing frames, expressed in kibibytes

    Range: 1 KiB to 2047 KiB, when the CIR value is <= 500,000 kbps.

    Range: 2 KiB to 2047 KiB, when the CIR value is > 500,000 kbps.

    Use the Traffic ▶Shaping ▶Port ▶Shaper page to view and configure the shaping parameters of outgoing ports.

    To configure a traffic-shaping port shaper

    1. Access the page Traffic ▶Shaping ▶Port ▶Shaper.
      The Traffic Shaping Port Shaper Configuration page opens. All the unit’s outgoing ports are listed in a grid.

    2. Select the outgoing port from the list that you wish to configure by clicking it.
      The outgoing port’s details are displayed.

    3. Make your changes, then click Apply.

    For more information on specific parameters, refer to the following table.

    Traffic Shaping Port Shaper Configuration (Traffic ▶Shaping ▶Port ▶Shaper)

    ParameterDescription
    EnableClick this box to change the current state of this outgoing port: enabled or disabled.
    PortThe name assigned to this outgoing port. You cannot modify this value.

    Bandwidth Profile Parameters

    ParameterDescription
    Committed Information Rate (Kbps)The shaping rate of outgoing frames, expressed as a multiple of 125 Kbps.
    Committed Burst Size (KiB) (1024 bytes)The shaping burst of outgoing frames, expressed in kilobytes with 1 kibibyte granularity.
    CPU Traffic Debited from CIRCPU traffic is never shaped. However, you can select this box to have the system debit CPU traffic from the outgoing port’s CIR bucket.

    Note: If you select this box, the bucket value could become negative.

    Viewing Traffic Shaping OAM Queue Statistics

    Each outgoing port has five queues reserved for specific Operation, Administration and Maintenance (OAM) usage. The OAM queues are as follows:

    • CPU
    • Monitor1
    • Monitor2
    • Packet Generator
    • Loopback

    You can view a summary and detailed statistics for each traffic-shaping OAM queue.

    To view a summary of statistics for all traffic-shaping OAM queues

    1. Access the page Traffic ▶Shaping ▶Port ▶OAM Queue Statistics.
      The Traffic Shaping OAM Queue Statistics page opens. All the unit’s OAM queues are listed in a grid. For more information on specific parameters, refer to the following table.

      Note: For each column in the table, the number of frames, bytes and the bit rate (expressed in Mbps) are displayed. The average CIR and EIR bit rates (expressed in Mbps) that you configured are also shown.

    Tip: To edit a specific queue or view its details, select the queue from the list by clicking it. To clear the statistics in the Traffic Shaping OAM Queue Statistics page, click the Clear button.

    Traffic Shaping OAM Queue Statistics (Traffic ▶Shaping ▶Port ▶OAM Queue Statistics)

    ParameterDescription
    NameThe name assigned to this shaping OAM queue
    PortThe name of the port associated with this OAM queue
    ForwardThe total number of packets that have been forwarded by this OAM queue. For details on the packet types, see "Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)".

    This value includes packets counted as:

    • Green forward no delay
    • Yellow forward no delay
    • Green forward with delay
    • Yellow forward with delay
    DiscardThe total number of packets that have been discarded by this OAM queue. For details on the packet types, see "Traffic Shaping Queue Detailed Statistics (Traffic ▶Shaping ▶Queue ▶Statistics)".

    This value includes packets counted as:

    • Green Discard full
    • Yellow Discard full
    CIR CompliantThe total number of packets that have been forwarded by this shaper using the CIR bucket
    EIR CompliantThe total number of packets that have been forwarded by this shaper using the EIR bucket

    To view detailed statistics for a traffic-shaping queue

    1. Access the page Traffic ▶Shaping ▶Port ▶OAM Queue Statistics.
      The Traffic Shaping OAM Queue Statistics page opens. All the unit’s queues are listed in a grid.

    2. Select the queue from the list whose statistics you wish to view by clicking it. The queue’s details are displayed. For more information on specific parameters, refer to the following table.
      Tip: To clear the statistics in the Traffic Shaping Queue Statistics page, click the Clear button located above the queue details.
      To obtain the latest statistics from the unit, click the Refresh button located beside the Clear button.


    Note: Select the Poll Every n Seconds box and enter the number of seconds between each time the statistics are automatically refreshed.

    Traffic Shaping OAM Queue Detailed Statistics (Traffic ▶Shaping ▶Port ▶OAM Queue Statistics)

    ParameterDescription
    NameThe name assigned to this shaping OAM queue
    PortThe name of the port associated with this OAM queue
    Green Forward No DelayThe total number of green frames/bytes in the OAM queue when the queue is near empty, i.e., the green frames/bytes that can be dropped from the queue without delay
    Yellow Forward No DelayThe total number of yellow frames/bytes in the OAM queue when the queue is near empty, i.e., the yellow frames/bytes that can be dropped from the queue without delay
    Green Forward With DelayThe total number of green frames/bytes in the OAM queue when the queue is not empty, i.e., the green frames/bytes that will be dropped from the queue with delay
    Yellow Forward With DelayThe total number of yellow frames/bytes in the OAM queue when the queue is not empty, i.e., the yellow frames/bytes that will be dropped from the queue with delay
    Green Discard FullThe total number of green frames/bytes that have been discarded by this OAM queue
    Yellow Discard FullThe total number of yellow frames/bytes that have been discarded by this OAM queue
    CIR CompliantThe total number of packets that have been forwarded by this shaper using the CIR bucket
    EIR CompliantThe total number of packets that have been forwarded by this shaper using the EIR bucket

    Configuring Default Queuing Profiles

    The default queuing profiles are used to map traffic to a queue based on the internal CoS value assigned to the data frames. Each default queuing profile is associated with an output port and contains a map of all possible CoS values (0-7) to either one or several queues.

    To edit a default queuing profile

    1. Access the page Traffic ▶Shaping ▶Port ▶Default Queuing Profile.
      The Traffic Shaping Default Queuing Profile page opens. All default profiles for this unit are listed in a grid. For more information on specific parameters, refer to the following table.

    2. Select the default queuing profile from the list that you wish to edit by clicking it.
      The queuing profile’s details are displayed.

    3. Use the information in the table to configure the default queuing profile, then click Apply.

    For more information on specific parameters, refer to the following tables.

    Traffic Shaping Default Queuing Profile (Traffic ▶Shaping ▶Port ▶Default Queuing
    Profile)

    ParameterDescription
    PortIndicates the port or LAG (for ring mode) to which this default queuing profile applies

    Note: You cannot modify this value since default queuing profiles are fixed.

    CoS Mappings

    ParameterDescription
    PCP-0 to PCP-7PCP refers to the Class of Service (CoS) or priority associated with traffic. There are eight defined CoS, with PCP-0 being the lowest priority traffic and PCP-7 being the highest.

    Specify the queue to which you wish to send traffic assigned to each CoS by making a selection in the drop-down list. This way, you indicate the mapping between the queues and the port or LAG.

    Each dedicated queue is assigned to a single port or LAG.

    © 2024 Accedian Networks Inc. All rights reserved. Accedian®, Accedian Networks®,  the Accedian logo™, Skylight™, Skylight Interceptor™ and per-packet intel™, are trademarks or registered trademarks of Accedian Networks Inc. To view a list of Accedian trademarks visit: http://accedian.com/legal/trademarks/. 


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