355
[PE1-bgp-default-vpn1] quit
[PE1-bgp-default] quit
# Configure BGP AS number substitution on PE 2.
<PE2> system-view
[PE2] bgp 100
[PE2-bgp-default] ip vpn-instance vpn1
[PE2-bgp-default-vpn1] peer 10:2::2 substitute-as
[PE2-bgp-default-vpn1] quit
[PE2-bgp-default] quit
551BVerifying the configuration
# The output shows that among the routes advertised by PE 2 to CE 2, the AS_PATH of 100::/96 has
changed from 100 600 to 100 100.
*Jun 27 18:07:34:420 2013 PE2 BGP/7/DEBUG:
BGP_IPV6.vpn1: Send UPDATE to peer 10:2::2 for following destinations:
Origin : Incomplete
AS path : 100 100
Next hop : 10:2::1
100::/96,
# Display again the routing information that CE 2 has received, and the routing table. The output
shows that CE 2 has learned the route 100::/96.
<CE2> display bgp routing-table ipv6 peer 10:2::1 received-routes
Total number of routes: 1
BGP local router ID is 12.1.1.3
Status codes: * - valid, > - best, d - dampened, h - history,
s - suppressed, S - stale, i - internal, e - external
Origin: i - IGP, e - EGP, ? - incomplete
* >e Network : 100:: PrefixLen : 96
NextHop : 10:2::1 LocPrf :
PrefVal : 0 OutLabel : NULL
MED :
Path/Ogn: 100 100?
<CE2> display ipv6 routing-table
Destinations : 7 Routes : 7
Destination: ::1/128 Protocol : Direct
NextHop : ::1 Preference: 0
Interface : InLoop0 Cost : 0
Destination: 10:2::/96 Protocol : Direct
NextHop : :: Preference: 0
Interface : Vlan-int12 Cost : 0
Destination: 10:2::2/128 Protocol : Direct
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