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Tunnel ID: Invalid
BkTunnel ID: Invalid
FtnIndex: 0x0
Connector: N/A
# Display routes destined for 100.1.1.0/24 on Switch B when the link between Switch A and Switch B
fails.
<SwitchB> display ip routing-table 100.1.1.0 24 verbose
Summary Count : 1
Destination: 100.1.1.0/24
Protocol: RIP
Process ID: 1
SubProtID: 0x1
Cost: 4
IpPre: N/A
Tag: 0
OrigTblID: 0x0
TableID: 0x2
NibID: 0x12000002
AttrID: 0xffffffff
Flags: 0x1008c
Label: NULL
BkLabel: NULL
Tunnel ID: Invalid
BkTunnel ID: Invalid
FtnIndex: 0x0
Connector: N/A
Configuring BFD for RIP (bidirectional detection in BFD
control packet mode)
Network requirements
As shown in
process 1.
VLAN-interface 300 of Switch A runs RIP process 2. VLAN-interface 400 of Switch C, and
VLAN-interface 300 and VLAN-interface 400 of Switch D run RIP process 1.
•
Configure a static route destined for 100.1.1.0/24 on Switch A.
•
Configure a static route destined for 101.1.1.0/24 on Switch C.
•
Enable static route redistribution into RIP on Switch A and Switch C. This allows Switch A to
learn two routes destined for 100.1.1.0/24 through VLAN-interface 100 and VLAN-interface 300.
It uses the route through VLAN-interface 100.
•
Enable BFD on VLAN-interface 100 of Switch A and VLAN-interface 200 of Switch C.
When the link over VLAN-interface 100 fails, BFD can quickly detect the link failure and notify RIP.
RIP deletes the neighbor relationship and the route information received learned on VLAN-interface
100. It uses the route destined for 100.1.1.0/24 through VLAN-interface 300.
BkInterface: N/A
TrafficIndex: N/A
OrigNextHop: 192.168.3.2
RealNextHop: 192.168.3.2
BkInterface: N/A
TrafficIndex: N/A
Figure
15, VLAN-interface 100 of Switch A and VLAN-interface 200 of Switch C run RIP
Interface: vlan-interface 100
Age: 00h21m23s
Preference: 100
QosLocalID: N/A
State: Active Adv
OrigVrf: default-vrf
OrigAs: 0
LastAs: 0
Neighbor: 192.168.3.2
BkNextHop: N/A
Interface: vlan-interface 200
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Troubleshooting
