H3C Technologies H3C SR8800 - Manual (Page 63)

47
[RouterD-rip-1] undo summary
# Configure Router E.
<RouterE> system-view
[RouterE] rip
[RouterE-rip-1] network 1.0.0.0
[RouterE-rip-1] version 2
[RouterE-rip-1] undo summary
# Display the IP routing table of Router A.
[RouterA] 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 output shows that two RIP routes can reach network 1.1.5.0/24. Their next hops are Router B
(1.1.1.2) and Router C (1.1.2.2) respectively, with the same cost of 2. Router 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 GigabitEthernet 3/1/2 on Router A.
[RouterA] interface GigabitEthernet 3/1/2
[RouterA-GigabitEthernet3/1/2] rip metricin 3
[RouterA-GigabitEthernet3/1/2] 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 output shows that only one RIP route reaches network 1.1.5.0/24, with the next hop as Router
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:
• Router A and Router B run OSPF, Router D runs RIP, and Router C runs OSPF and RIP.
• Configure RIP to redistribute OSPF routes on Router C so that Router 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.
• Route summarization is configured on Router C and only the summary route 10.0.0.0/8 is
advertised, reducing the routing table size of Router D.