Configuring Mpls Forwarding For Asbr Confederations - Cisco NCS 540 Series Configuration Manual

MPLS L3VPN Overview
Step 11
next-hop-self
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# next-hop-self
Disables next-hop calculation and let you insert your own address in the next-hop field of BGP updates.
Step 12 Use the commit or end command.
commit - Saves the configuration changes and remains within the configuration session.
end - Prompts user to take one of these actions:
• Yes - Saves configuration changes and exits the configuration session.
• No - Exits the configuration session without committing the configuration changes.
• Cancel - Remains in the configuration mode, without committing the configuration changes.

Configuring MPLS Forwarding for ASBR Confederations

Perform this task to configure MPLS forwarding for autonomous system boundary router (ASBR)
confederations (in BGP) on a specified interface.
Note
This configuration adds the implicit NULL rewrite corresponding to the peer associated with the interface,
which is required to prevent BGP from automatically installing rewrites by LDP (in multihop instances).
Procedure
Step 1 configure
Example:
RP/0/RP0/CPU0:router# configure
Enters XR Config mode.
Step 2
router bgp as-number
Example:
RP/0/RP0/CPU0:router(config)# router bgp 120
RP/0/RP0/CPU0:router(config-bgp)
Enters BGP configuration mode allowing you to configure the BGP routing process.
Step 3
mpls activate
Example:
L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x
Configuring MPLS Forwarding for ASBR Confederations
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