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Configuring rip to advertise a summary route, Network requirements – H3C Technologies H3C S7500E Series Switches User Manual

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[SwitchD-rip-1] network 1.0.0.0

[SwitchD-rip-1] version 2

[SwitchD-rip-1] undo summary

# Configure Switch E.

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.

Configuring RIP to Advertise a Summary Route

Network requirements

As shown in the following figure:

z

Switch A and Switch B run OSPF, Switch D runs RIP, and Switch C runs OSPF and RIP.

z

Configure RIP to redistribute OSPF routes on Switch C so that Switch D has routes destined for

networks 10.1.1.0/24, 10.2.1.0/24, 10.5.1.0/24, and 10.6.1.0/24.

z

Route summarization is configured on Switch C and only the summary route 10.0.0.0/8 is

advertised, thus reducing the routing table size of Switch D.