55
Version : RIPv2 Last update: 00h00m13s
Relay nbr : No BFD session: None
Bad packets: 0 Bad routes : 0
[SwitchA] display rip 1 route
Route Flags: R - RIP, T - TRIP
P - Permanent, A - Aging, S - Suppressed, G - Garbage-collect
D - Direct, O - Optimal, F - Flush to RIB
----------------------------------------------------------------------------
Peer 12.12.12.2 on Vlan-interface200
Destination/Mask Nexthop Cost Tag Flags Sec
14.0.0.0/8 12.12.12.2 1 0 RAOF 16
44.0.0.0/8 12.12.12.2 2 0 RAOF 16
Local route
Destination/Mask Nexthop Cost Tag Flags Sec
12.12.12.0/24 0.0.0.0 0 0 RDOF -
22.22.22.22/32 0.0.0.0 0 0 RDOF -
# Display neighbor information and route information on Switch B.
[SwitchB] display rip 1 neighbor
Neighbor Address: 14.14.14.2
Interface : Vlan-interface200
Version : RIPv2 Last update: 00h00m32s
Relay nbr : No BFD session: None
Bad packets: 0 Bad routes : 0
[SwitchB] display rip 1 route
Route Flags: R - RIP, T - TRIP
P - Permanent, A - Aging, S - Suppressed, G - Garbage-collect
D - Direct, O - Optimal, F - Flush to RIB
----------------------------------------------------------------------------
Peer 14.14.14.2 on Vlan-interface200
Destination/Mask Nexthop Cost Tag Flags Sec
12.0.0.0/8 14.14.14.2 1 0 RAOF 1
22.0.0.0/8 14.14.14.2 2 0 RAOF 1
Local route
Destination/Mask Nexthop Cost Tag Flags Sec
44.44.44.44/32 0.0.0.0 0 0 RDOF -
14.14.14.0/24 0.0.0.0 0 0 RDOF -
The output shows that the neighbor and route information on Switch A and Switch B keep unchanged
during the active/standby switchover on Switch S. The traffic from Switch A to Switch B has not been
impacted.
Configuring BFD for RIP (single-hop echo detection for a
directly connected neighbor)
Network requirements
As shown in Figure 13, VLAN-interface 100 of Switch A and Switch C runs RIP process 1.
VLAN-interface 200 of Switch A runs RIP process 2. VLAN-interface 300 of Switch C and
VLAN-interface 200 and VLAN-interface 300 of Switch B run RIP process 1.
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