3com S7906E Manuel De Montage

 

1-30 

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Switch A is connected to Switch C through Switch B. VLAN-interface 100 on Switch A, 

VLAN-interface 200 on Switch C, and VLAN-interface 200 and VLAN-interface 100 on Switch B run 

RIP process 1. 

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Configure a static route to Switch C on Switch A, and configure a static route to Switch A on Switch 

C. Enable BFD on VLAN-interface 100 of Switch A and VLAN-interface 200 of Switch C. 

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Switch A is connected to Switch C through Switch D. VLAN-interface 300 on Switch A runs RIP 

process 2; VLAN-interface 400 on Switch C, and VLAN-interface 300 and VLAN-interface 400 on 

Switch D run RIP process 1.  

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Enable static route redistribution into RIP on Switch A and Switch C so that Switch A and Switch C 

have routes to send to each other. Switch A learns the static route sent by Switch C, the outbound 

interface is the interface connected to Switch B. 

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When the link between Switch B and Switch C fails, BFD can quickly detect the link failure and 

notify it to RIP, and the BFD session goes down. In response, RIP deletes the neighbor relationship 

with Switch C and the route information received from Switch C. Then, Switch A learns the static 

route sent by Switch C, the outbound interface of the route is the interface connected to Switch D. 

Figure 1-9 Network diagram for configuring BFD for RIP (bidirectional detection in BFD control packet 

mode) 

Switch C

Switch A

 Vlan-int100
192.168.1.1/24

      Vlan-int100 

192.168.1.2/24

Switch B

 Vlan-int200
192.168.2.1/24

     Vlan-int200   

192.168.2.2/24

Switch D

      Vlan-int300 

192.168.3.2/24

      Vlan-int300 

192.168.3.1/24

 Vlan-int400
192.168.4.1/24

 Vlan-int400
192.168.4.2/24

 

 

1)  Configure an IP address for each interface (Omitted) 

2)  Configure RIP basic functions and enable static route redistribution into RIP so that Switch A and 

Switch C have routes to send to each other. 

# Configure Switch A. 

[SwitchA] rip 1 

[SwitchA-rip-1] network 192.168.1.0 

[SwitchA-rip-1] peer 192.168.2.2 

[SwitchA-rip-1] undo validate-source-address 

[SwitchA-rip-1] import-route static 

[SwitchA-rip-1] quit 

[SwitchA] interface vlan-interface 100 

[SwitchA-Vlan-interface100] rip bfd enable 

[SwitchA-Vlan-interface100] quit