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NE40E V800R010C00 Configuration Guide - MPLS 01

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Enabling BGP Peers to Exchange Labeled IPv4 Routes

Enabling BGP Peers to Exchange Labeled IPv4 Routes

In the seamless MPLS networking, before an E2E BGP LSP is established, BGP peers must be able to exchange labeled IPv4 routes with each other.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  3. Run:

    peer { ipv4-address | group-name } label-route-capability [ check-tunnel-reachable ]

    The ability to exchange labeled IPv4 routes with a BGP peer is enabled.

    • If the check-tunnel-reachable is configured, a local device advertises an IPv4 unicast route to its peer if a tunnel between the local and remote devices is unreachable and advertises a labeled IPv4 route if the tunnel is reachable. This parameter helps prevent a data forwarding failure when an MP-IBGP peer relationship between the CSG and MASG is established but an LSP over the peer relationship fails to be established.

    • If the check-tunnel-reachable parameter is not configured, the local device advertises a labeled IPv4 route, regardless of whether a tunnel between the local and remote devices is unreachable.

  4. Run:

    commit

    The configuration is committed.

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Updated: 2018-07-12

Document ID: EDOC1100028530

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