F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

837
<FirewallB> debugging bgp bfd
<FirewallB> terminal monitor
<FirewallB> terminal debugging
# The following debugging information shows that Firewall B can quickly detect the failure on
Router A.
%Nov 5 11:42:24:172 2009 FirewallB BFD/5/BFD_CHANGE_FSM:
Sess[3002::2/3001::1,13/17,GE1/1,Ctrl], Sta: UP->DOWN, Diag: 1
%Nov 5 11:42:24:172 2009 FirewallB BGP/5/BGP_STATE_CHANGED: 3001::1 state is changed
from ESTABLISHED to IDLE.
*Nov 5 11:42:24:187 2009 FirewallB RM/6/RMDEBUG: BGP_BFD: Recv BFD DOWN msg, Src IP
3002::2, Dst IP 3001::1, Instance ID 0.
*Nov 5 11:42:24:187 2009 FirewallB RM/6/RMDEBUG: BGP_BFD: Reset BGP session 3001::1
for BFD session down.
*Nov 5 11:42:24:187 2009 FirewallB RM/6/RMDEBUG: BGP_BFD: Send DELETE msg to BFD,
Connection type DIRECT, Src IP 3002::2, Dst IP 3001::1, Instance ID 0.
# Display route 1200::0/64 on Firewall B, and you can see that Firewall A and Firewall B
communicate through Router B.
<FirewallB> display ipv6 routing-table 1200::0 64 verbose
Routing Table :
Summary Count : 1
Destination : 1200:: PrefixLength : 64
NextHop : 2001::1 Preference : 255
RelayNextHop : 2002::1 Tag : 0H
Neighbor : 2001::1 ProcessID : 0
Interface : GigabitEthernet1/2 Protocol : BGP4+
State : Active Adv Cost : 100
Tunnel ID : 0x0 Label : NULL
Age : 4635sec
The output shows that Firewall B has one route to reach network 1200::0/64, that is, Firewall
A<—>Router B<—>Firewall B.
310B
Troubleshooting IPv6 BGP configuration
965BIPv6 BGP peer relationship not established
1773BSymptom
Display BGP peer information by using the display bgp ipv6 peer command. The state of the connection
to the peer cannot become established.
1774BAnalysis
To become IPv6 BGP peers, any two routers must establish a TCP session using port 179 and exchange
open messages successfully.
1775BSolution
1. Use the display current-configuration configuration bgp command to verify that the peer's AS
number is correct.
2. Use the display bgp ipv6 peer command to verify that the peer's IPv6 address is correct.