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NE20E-S V800R010C10SPC500 Configuration Guide - MPLS 01

This is NE20E-S V800R010C10SPC500 Configuration Guide - MPLS
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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: 2019-01-03

Document ID: EDOC1100055103

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