Specifications

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Cisco SCE 2000 and SCE 1000 CLI Command Reference
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Chapter 2 CLI Command Reference
vlan
vlan
Configures the VLAN environment. A single VLAN tag is supported per packet (no QinQ support).
vlan symmetric skip
vlan a-symmetric skip
vlan symmetric classify
default vlan
Syntax Description See "Usage Guidelines.
Command Default Default mode = symmetric skip
Command Modes Linecard Interface Configuration
Command History This table includes the following release-specific history entries:
Usage Guidelines The various VLAN modes act as follows:
• vlan symmetric skip : ignore tunnel
• vlan a-symmetric skip : ignore tunnel, asymmetric
• vlan symmetric classify : VLAN tag as subscriber
• When the tunneling information is ignored, the subscriber identification is the subscriber IP of the
IP packet carried inside the tunnel.
Use the symmetric skip form of the command to skip the VLAN header when VPN and flow
classification do not use the VLAN tag. VLAN tags are symmetric.
Use the a-symmetric skip form of the command to skip the VLAN header when VPN and flow
classification do not use the VLAN tag. VLAN tags are asymmetric. Note that this form of the command
incurs a performance penalty.
Use the symmetric classify form of the command when VPN and flow classification use the VLAN tag.
VLAN tags are symmetric. Using VLAN classification is mutually exclusive with any other tunnel-based
classification.
Use the default keyword to set the VLAN configuration to the default value.
Symmetric and Asymmetric Environments
A symmetric environment is one in which the same VLAN tags are used for carrying a transaction in the
upstream and downstream directions.
Release Modification
2.5.7 This command was introduced.