S-VLAN Subinterface with an Untagged C-VLAN ID Overview

When you configure an S-VLAN subinterface with a C-VLAN ID in the range 0–4095 or with the any (5001) keyword for the VLAN ID, the single- tagged frames with a valid S-VLAN ID or untagged frames were ignored for the subinterface. You can also configure an S-VLAN subinterface with a C-VLAN ID to zero by using the anyUntagged (5003) keyword, when the C-VLAN is configured inside S-VLAN as part of a pseudowire. As a result, both customer-tagged and untagged frames can be transported inside a prescribed S-VLAN-tag over a single pseudowire.

Note: On ES2 10G, ES2 10G ADV, and ES2 10G UPLINK LMs, untagged frames are not transported inside a prescribed S-VLAN tag even though the C-VLAN ID is set to zero.

Observe the following guidelines when you configure an S-VLAN subinterface with any untagged VLAN, for which the C-VLAN ID 0 is reserved.

Related Documentation