Setting Up an L2 Filter Configuration Job
  • 21 Jun 2024
  • 3 Minutes to read
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Setting Up an L2 Filter Configuration Job

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Article summary

Layer 2 filters can be used to loop back traffic or set up a traffic policy based on specific characteristics such as Ethernet header settings, VLAN settings and DSCP for Layer 2 filters.

To set up an L2 filter Job

  1. Access the page Commission ▶ Jobs.

  2. Set all common configuration job settings, as described in "Creating Configuration Jobs in GUI Mode" and in "Creating Configuration Jobs Using Data Sets".

  3. Select L2 filter in the left pane. The L2 filter tab is displayed.
    Setting Up an L2 Filter Configuration Job_1.PNG

  4. Complete all fields in the L2 Filter tab as required. For more information on specific
    parameters, see the table below.

  5. Use the Add PLUS BUTTON.png button or DuplicateDUPLICATE BUTTON.png button to add L2 filters as required.


    Note: When duplicating a row, always select the row to duplicate before clicking
    the Duplicate DUPLICATE BUTTON.png button.

  6. Click Apply, then click Close.

  7. Click the Refresh button REFRESH BUTTON.png to refresh the user interface.

L2 Filter Tab (Commission ▶ Jobs)

Filter General

ParameterDescription
NameUnique name to identify the filter.

Ethernet Header Settings

ParameterDescription
Destination

MAC

Mask

The destination MAC address and mask. Only the bits specified by the mask are used; the other bits are ignored.

Address Format: Six pairs of hexadecimal digits,separated by colons (xx:xx:xx:xx:xx:xx).

Source

MAC

Mask

The source MAC address and mask. Only the bits specified by the mask are used; the other bits are ignored.

Address Format: Six pairs of hexadecimal digits,separated by colons (xx:xx:xx:xx:xx:xx).

Encapsulated EthertypeProtocol may be selected or entered manually (hexadecimal):
  • IPv4 (0x0800)
  • X.25 Layer3 (0x0805)
  • ARP (0x0806)
  • REVARP (0x8035)
  • IPX (0x8137)
  • SNMP (0x814C)
  • WCP (0x80FF)
  • IPv6 (0x86DD)
  • MAC Control (0x8808)
  • MAC Protocol (0x22E2)
  • PPP (0x880B)
  • MPLS (0x8847)
  • MPLS Multicast (0x8848)
  • PPPOE Discovery (0x8863)
  • PPPOE Session (0x8864)
  • VLAN (0x8100)
  • VLAN (0x88A8)
  • LLDP (0x88CC)
  • 3GPP2 (0x88d2)
  • Custom
CustomCustom Ethertype.

This parameter is valid only if the Encapsulated Ethertype is set to Custom.

VLAN stack sizeDouble-click in this field to change the value.

Allows you to filter based on the number of VLAN tags in the packet.

VLAN and VLAN-in-VLAN Settings

ParameterDescription
EthertypeThe VLAN Ethernet Type may be one of the following:
  • C-VLAN: Customer VLAN (typically the inner tag).
  • S-VLAN: Service VLAN (typically the outer tag).
  • T-VLAN: Tunnel VLAN (either the inner or outer tag).
  • Any: Choose this option so filters will allow frames with C-VLAN, S-VLAN or T-VLAN tags through.
CFI/DEIThe Canonical Format Indicator (CFI) or the Drop Eligibility Indicator (DEI). This value should always be set to zero for connections to Ethernet switches.

CFI is used to ensure compatibility between Ethernet type networks and Token Ring type networks. If a frame received at an Ethernet port has a CFI set to 1, the frame should not be forwarded as-is to an untagged port.

In the context of bandwidth regulation, DEI can be used to carry the frame color. When set to 0, the frame is green; when set to 1, the frame is yellow.

Priority ConditionDouble-click in this field to select an operator to be used with the Priority Min or Priority Max field.

VLAN priority allows provisioning CoS prioritization using the standard 802.1Q priority tag. Interpreting the priorities is based on the carrier's equipment and administrative policies. The valid operator types are:

  • Greater than
  • Less than
  • Equal to
  • Range (inclusive range)
Note: You can set only one VLAN (VLAN or VLAN-in-VLAN) to a range; the other must be set to Equal to. For instance, if you select a range for the second VLAN (VLAN-in-VLAN), you must select Equal to for the first VLAN (VLAN).
Priority MinPriority minimum value. 0 to 7
Priority MaxPriority maximum value. 0 to 7
OperatorDouble-click in this field to select an operator to be used with the ID initial. Only "Equal to" is supported with a single VLAN ID.

Taken together, these fields (Operator and ID initial) define the valid VLAN ID values.

The valid operator types are:

  • Disable
  • Greater than
  • Less than
  • Equal to
  • Range (inclusive range)
ID initialThe VLAN ID minimum value.

Acceptable values range from 0 to 4,095.

ID lastThe VLAN ID maximum value.

Acceptable values range from 0 to 4,095.

DSCP/IP Precedence

ParameterDescription
TypeThe DSCP/IP type may be one of the following:
  • DSCP
  • IP Precedence
ConditionThe DSCP/IP precedence operator. The valid operator types are:
  • Greater than
  • Less than
  • Equal to
  • Range (inclusive range)
ID initialThe DSCP/IP precedence minimum value.

DSCP range: 0 to 63

IP precedence range: 0 to 7

ID lastThe DSCP/IP precedence maximum value.

DSCP range: 0 to 63

IP precedence range: 0 to 7

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