Adding Virtual Connection Endpoints (VCEs)
- 25 Jan 2024
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Adding Virtual Connection Endpoints (VCEs)
- Updated on 25 Jan 2024
- 4 Minutes to read
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Article Summary
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Depending on the use case, a VCE element has a “component type” attribute: Customer (CVLAN), Operator (S-VLAN) or Tunnel (S-VLAN):
- A Tunnel VCE is used for trunking use cases (Access Provider).
- An Operator VCE is used to tag the data frames in the operator's network.
- A Customer VCE is used to handle customer (tagged or untagged) traffic (usually at UNI and at VUNI).
To add a new VCE or edit an existing VCE
Access Virtual Connection ▶VCE ▶Configuration.
A list of all existing VCEs and their current status is displayed.Click Add to create a new VCE or click the Name of an existing VCE to edit its settings.
Enter values in the required fields, then click Apply.
Note: A type Tunnel VCE will create an implicit VCA which can be included within another VCA. Also, a VCE with both TP A and TP Z ports configured as external will generate an implicit VCA.
For more information on specific parameters, refer to the following table.
VCE Configuration and Status (Virtual Connection ▶VCE ▶Configuration)
| Parameter | Description |
|---|---|
| VCE Name | A name that uniquely identifies the VCE on the Skylight element: GX. |
| Type | Type indicates which type of VCE is being created. The default is Customer. The available options are:
|
| TPID | The TPID (Tag Protocol Identifier). Specifies the type of VLANtagging used in the frames that will be handled by this VCE. Available tag protocol options are:
|
| Component ID | The ID of the Component into which the VCE will be attached. Specifying 0 indicates that the system shall automatically assign a component ID. |
| Frame Type | Specifies the type of frames that will be selected for handling by this VCE. Available options are:
|
| Relay Action | Select the action to be performed on incoming frames.
|
| TP A | Use this parameter to configure the incoming Terminal Point (TP). The TP A is a virtual UNI (User Network Interface) port. It can be either:
|
| TP Z | Use this parameter to configure the outgoing Terminal Point (TP). The TP Z is always a virtual NNI (Network Network Interface) port. It can be either:
|
| TP A Port | The TP A Port defines the Ingress port of VCE. |
| TP Z Port | The TP Z Port defines the Egress port of VCE. |
| TP A VID | The TP A VID is used to assign a VID to frames. When Frame Type is configured as 'untagged' the option is unavailable. A single VLAN-ID chosen from the range 1–4094 is assigned to this parameter. If the Frame Type is Customer, multiple VLANIDs may be specified in the following format: [-],[-] ...(e.g. 1, 2, 100–200 will include VIDs 1, 2, 100, 101, 102, 103... 200). |
| TP Z VID | The TP Z VID is applicable when 'vid-relay-action' is set to 'translate' or 'tag'. Only a single value for the VID may be specified. |
CoS Mapping
| Parameter | Description |
|---|---|
| TP A PCP Mapping | The TP A PCP Mapping is the ingress CoS profile name with the type PCP. |
| TP Z PCP Mapping | The TP Z PCP Mapping is the egress CoS profile name with the type PCP. |
VCE Examples
This section provides examples of how to set up the VCEs required for two different types of sessions on the unit:
VCE Settings Example #1: C-VLAN Bridge
| Parameter | Description |
|---|---|
| VCE Name | C_VID_1000 |
| Type | Customer |
| TPID | 0x8100 |
| Frame type | Vlan-tagged |
| VID Relay Action | Preserve |
| TP A Port | PORT-1 |
| TP A VID | 1000 |
| TP A PCP Mapping | |
| TP Z Port | PORT-8 |
| TP Z VID | 1000 |
| TP Z PCP Mapping | |
| Component ID | 1 |
VCE Settings Example #2: Tagged Service Interface
| Parameter | Description |
|---|---|
| VCE Name | C_VID_1000 |
| Type | Customer |
| TPID | 0x8100 |
| Frame type | Vlan-tagged |
| VID Relay Action | Preserve |
| TP A Port | PORT-6 |
| TP A VID | 1000 |
| TP A PCP Mapping | |
| TP Z Port | PORT-8 |
| TP Z | Internal |
| TP Z VID | 1000 |
| TP Z PCP Mapping | |
| Component ID | 1 |
VCE Settings Example #3: Operator
| Parameter | Description |
|---|---|
| VCE Name | S_VID_5 |
| Type | Operator |
| TPID | 0x88A8 |
| Frame type | all-to-one |
| VID Relay Action | Tag |
| TP A | Internal |
| TP A VID | |
| TP A PCP Mapping | |
| TP Z | PORT-5 |
| TP Z VID | 5 |
| TP Z PCP Mapping | |
| Component ID | 2 |
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