Configuring MPLS TE FRR

MPLS TE FRR provides temporary link or node protection on a CRLSP. When you configure FRR, follow the restrictions and guidelines:

• Do not configure both FRR and RSVP authentication on the same interface.

• Only MPLS TE tunnels established through RSVP-TE support FRR.

• Use bypass tunnels to protect only critical interfaces or links when bandwidth is insufficient. Bypass tunnels are pre-established and require extra bandwidth.

• You can specify which type of CRLSPs can use a bypass tunnel, whether a bypass tunnel provides bandwidth protection, and the sum of protected bandwidth. Make sure the bandwidth assigned to the bypass tunnel is no less than the total bandwidth needed by all primary CRLSPs. Otherwise, some primary CRLSPs might not be protected by the bypass tunnel.

• A bypass tunnel typically does not forward data when the primary CRLSP works correctly. For a bypass tunnel to also forward data during tunnel protection, you must assign adequate bandwidth to the bypass tunnel.

• A bypass tunnel cannot be used for services such as VPN.