Associating Track with VPLS
When you associate Track with an AC(a Layer 3 interface) on a VPLS network, the AC is up only when one or more of the associated track entries are positive.
Associating Track with an AC helps detects AC failures. For example, when an AC is a VE-L2VPN interface, the AC interface will not go down upon a link failure because the interface is a virtual interface. To resolve the problem, you can associate Track with the AC to detect failures on the link that connects the PE-agg to the L3VPN or IP backbone. When a failure occurs on the link, the VE-L2VPN interface is set to down. Consequently, the PW bound to the AC goes down. If the PW has a backup PW, traffic can be switched to the backup PW. For more information about VE-L2VPN interfaces and L2VPN access to L3VPN or IP backbone, see MPLS Configuration Guide.
To associate a Layer 3 interface with a track entry:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter Layer 3 interface view. | interface interface-type interface-number | N/A |
3. Bind the interface to a VSI and associate it with a track entry. | xconnect vsi vsi-name [ hub ] track track-entry-number&<1-3> | By default, the interface is not bound to any VSI or associated with any track entry. |