R2511-HP MSR Router Series MPLS Configuration Guide(V5)

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<PE2> terminal debugging

<PE2> debugging bgp update vpn-instance vpn1 verbose

<PE2> refresh bgp vpn-instance vpn1 all export

*0.4402392 PE2 RM/7/RMDEBUG:

BGP.vpn1: Send UPDATE to 10.2.1.1 for following destinations :

Origin : Incomplete

AS Path : 100 600

Next Hop : 10.2.1.2

100.1.1.1/32,

# Execute the display bgp routing-table peer received-routes command on CE 2 to verify that CE

2 did not receive the route to 100.1.1.1/32.

<CE2> display bgp routing-table peer 10.2.1.2 received-routes

Total Number of Routes: 4

BGP Local router ID is 10.2.1.1

Status codes: * - valid, ^ - VPN best, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

Origin : i - IGP, e - EGP, ? - incomplete

Network NextHop MED LocPrf PrefVal Path/Ogn

*> 10.1.1.0/24 10.2.1.2 0 100?

*> 10.1.1.1/32 10.2.1.2 0 100?

* 10.2.1.0/24 10.2.1.2 0 0 100?

* 10.2.1.1/32 10.2.1.2 0 0 100?

2. Configure BGP AS number substitution:

# Configure BGP AS number substitution on PE 2.

<PE2> system-view

[PE2] bgp 100

[PE2-bgp] ipv4-family vpn-instance vpn1

[PE2-bgp-vpn1] peer 10.2.1.1 substitute-as

[PE2-bgp-vpn1] quit

[PE2-bgp] quit

The output shows that among the routes advertised by PE 2 to CE 2, the AS_PATH of

100.1.1.1/32 has changed from 100 600 to 100 100.

*0.13498737 PE2 RM/7/RMDEBUG: