HP 6125XLG Configuration Manual page 267

Protocol: BGP
Diag Info: No Diagnostic
The output shows that a BFD session has been established between Switch A and Switch C.
# Display BGP peer information on Switch C.
<SwitchC> display bgp peer ipv4
BGP local router ID: 3.3.3.3
Local AS number: 200
Total number of peers: 2
Peer
2.0.1.1
3.0.1.1
The output shows that Switch C has established two BGP connections with Switch A, and both
connections are in Established state.
# Display route 1.1.1.0/24 on Switch C.
<SwitchC> display ip routing-table 1.1.1.0 24 verbose
Summary Count : 1
Destination: 1.1.1.0/24
Protocol: BGP
SubProtID: 0x1
Cost: 50
Tag: 0
OrigTblID: 0x1
TableID: 0x2
NBRID: 0x15000001
AttrID: 0x1
Flags: 0x10060
Label: NULL
BkLabel: NULL
Tunnel ID: Invalid
BkTunnel ID: Invalid
The output shows that Switch C communicates with network 1.1.1.0/24 through the path Switch
C<—>Switch B<—>Switch A. Then the path Switch C<—>Switch B<—>Switch A fails.
# Enable debugging on Switch C.
<SwitchC> debugging bgp event
<SwitchC> terminal monitor
<SwitchC> terminal logging level 7
%Mar 12 19:02:59:241 2012 SwitchC BFD/6/FSM: -VDC=1; Sess[3.0.2.2/3.0.1.1, LD/RD:
513/513, Interface:N/A, SessType:Ctrl, LinkType:INET], Sta: UP->DOWN, Diag: 1
*Mar 12 19:02:59:242 2012 SwitchC BGP/7/DEBUG: -VDC=1;
BGP.: 3.0.1.1 Receive ManualStop event in ESTABLISHED state.
*Mar 12 19:02:59:242 2012 SwitchC BGP/7/DEBUG: -VDC=1;
Peers in established state: 2
AS MsgRcvd MsgSent OutQ PrefRcv Up/Down
200 4
200 4
Process ID: 0
Age: 00h00m09s
Preference: 255
State: Active Adv
OrigVrf: default-vrf
OrigAs: 0
LastAs: 0
Neighbor: 3.0.1.1
OrigNextHop: 3.0.1.1
RealNextHop: 3.0.2.1
BkNextHop: N/A
Interface: Vlan-interface101
BkInterface: N/A
256
5 0 0 00:01:55 Established
5 0 0 00:01:52 Established
State