Troubleshooting ipv6 bgp configuration, No ipv6 bgp peer relationship established, Symptom – H3C Technologies H3C S7500E Series Switches User Manual
Page 356: Analysis, Processing steps
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[SwitchB-bgp] ipv6-family
[SwitchB-bgp-af-ipv6] peer 100::1 as-number 100
[SwitchB-bgp-af-ipv6] peer 101::1 as-number 200
[SwitchB-bgp-af-ipv6] peer 101::1 next-hop-local
# Configure Switch C.
[SwitchC] ipv6
[SwitchC] bgp 200
[SwitchC-bgp] router-id 3.3.3.3
[SwitchC-bgp] ipv6-family
[SwitchC-bgp-af-ipv6] peer 101::2 as-number 200
[SwitchC-bgp-af-ipv6] peer 102::2 as-number 200
# Configure Switch D.
[SwitchD] ipv6
[SwitchD] bgp 200
[SwitchD-bgp] router-id 4.4.4.4
[SwitchD-bgp] ipv6-family
[SwitchD-bgp-af-ipv6] peer 102::1 as-number 200
3) Configure
route
reflector
# Configure Switch C as a route reflector, Switch B and Switch D as its clients.
[SwitchC-bgp-af-ipv6] peer 101::2 reflect-client
[SwitchC-bgp-af-ipv6] peer 102::2 reflect-client
Use the display bgp ipv6 routing-table command on Switch B and Switch D respectively, you can
find both of them have learned the network 1::/64.
Troubleshooting IPv6 BGP Configuration
No IPv6 BGP Peer Relationship Established
Symptom
Display BGP peer information using the display bgp ipv6 peer command. The state of the connection
to the peer cannot become established.
Analysis
To become IPv6 BGP peers, any two routers need to establish a TCP session using port 179 and
exchange open messages successfully.
Processing steps
1) Use
the
display current-configuration command to verify the peer’s AS number.
2) Use
the
display bgp ipv6 peer command to verify the peer’s IPv6 address.
3) If the loopback interface is used, check whether the peer connect-interface command is
configured.
4) If the peer is not directly connected, check whether the peer ebgp-max-hop command is
configured.
5) Check whether a route to the peer is available in the routing table.
6) Use
the
ping command to check connectivity.
7) Use
the
display tcp ipv6 status command to check the TCP connection.