3Com 4510G - Troubleshooting RIP; No RIP Updates Received

3-21
[SwitchD] rip 1
[SwitchD-rip-1] network 1.0.0.0
[SwitchD-rip-1] version 2
[SwitchD-rip-1] undo summary
# Configure Switch E.
<SwitchE> system-view
[SwitchE] rip 1
[SwitchE-rip-1] network 1.0.0.0
[SwitchE-rip-1] version 2
[SwitchE-rip-1] undo summary
# Display the IP routing table of Switch A.
[SwitchA] display rip 1 database
1.0.0.0/8, cost 0, ClassfulSumm
1.1.1.0/24, cost 0, nexthop 1.1.1.1, Rip-interface
1.1.2.0/24, cost 0, nexthop 1.1.2.1, Rip-interface
1.1.3.0/24, cost 1, nexthop 1.1.1.2
1.1.4.0/24, cost 1, nexthop 1.1.2.2
1.1.5.0/24, cost 2, nexthop 1.1.1.2
1.1.5.0/24, cost 2, nexthop 1.1.2.2
The display shows that there are two RIP routes to network 1.1.5.0/24. Their next hops are Switch B
(1.1.1.2) and Switch C (1.1.2.2) respectively, with the same cost of 2. Switch C is the next hop router to
reach network 1.1.4.0/24, with a cost of 1.
3) Configure an additional metric for the RIP interface.
# Configure an additional metric of 3 for VLAN-interface 200 on Switch A.
[SwitchA] interface vlan-interface 200
[SwitchA-Vlan-interface200] rip metricin 3
[SwitchA-Vlan-interface200] display rip 1 database
1.0.0.0/8, cost 0, ClassfulSumm
1.1.1.0/24, cost 0, nexthop 1.1.1.1, Rip-interface
1.1.2.0/24, cost 0, nexthop 1.1.2.1, Rip-interface
1.1.3.0/24, cost 1, nexthop 1.1.1.2
1.1.4.0/24, cost 2, nexthop 1.1.1.2
1.1.5.0/24, cost 2, nexthop 1.1.1.2
The display shows that there is only one RIP route to network 1.1.5.0/24, with the next hop as Switch B
(1.1.1.2) and a cost of 2.
Troubleshooting RIP
No RIP Updates Received
Symptom:
No RIP updates are received when the links work well.
Analysis:
After enabling RIP, you must use the network command to enable corresponding interfaces. Make
sure no interfaces are disabled from handling RIP messages.