Maipu Administration Guide

Configure the RIP Metric Offset

Network Requirements

RIPv2 runs between Device1, Device2, Device3, and Device4.
Device1 learns route 200.0.0.0/24 from both Device2 and Device3.
On Device1, set the route metric offset in the receive direction so that Device1 selects the route advertised by Device2 with priority.

Network Topology

Networking for configuring the RIP Metric Offset

Figure 5-3 Networking for configuring the RIP Metric Offset

Configuration Steps

Step 1: Create VLANs, and add ports to the required VLANs. (Omitted)

Step 2: Configure IP addresses for the ports. (Omitted)

Step 3: Configure RIP.

#Configure Device1.

Device1#configure terminal
Device1(config)#router rip
Device1(config-rip)#version 2
Device1(config-rip)#network 1.0.0.0
Device1(config-rip)#network 2.0.0.0
Device1(config-rip)#exit

#Configure Device2.

Device2#configure terminal
Device2(config)#router rip
Device2(config-rip)#version 2
Device2(config-rip)#network 1.0.0.0
Device2(config-rip)#network 3.0.0.0
Device2(config-rip)#exit

#Configure Device3.

Device3#configure terminal
Device3(config)#router rip
Device3(config-rip)#version 2
Device3(config-rip)#network 2.0.0.0
Device3(config-rip)#network 4.0.0.0
Device3(config-rip)#exit

#Configure Device4.

Device4#configure terminal
Device4(config)#router rip
Device4(config-rip)#version 2
Device4(config-rip)#network 3.0.0.0
Device4(config-rip)#network 4.0.0.0
Device4(config-rip)#network 200.0.0.0
Device4(config-rip)#exit

#Query the routing table of Device1.

Device1#show ip route 
Codes: C - Connected, L - Local, S - static, R - RIP, B - BGP, i-ISIS 
       U - Per-user Static route 
       O - OSPF, OE-OSPF External, M - Management, E - IRMP, EX - IRMP external 
 
C 1.0.0.0/24 is directly connected, 00:23:06, vlan2 
C 2.0.0.0/24 is directly connected, 00:22:56, vlan3
R 3.0.0.0/24 [120/1] via 1.0.0.2, 00:13:26, vlan2
R 4.0.0.0/24 [120/1] via 2.0.0.2, 00:11:04, vlan3
C 127.0.0.0/8 is directly connected, 76:51:00, lo0
R 200.0.0.0/24 [120/2] via 1.0.0.2, 00:08:31, vlan2 
               [120/2] via 2.0.0.2, 00:08:31, vlan3

According to the routing table of Device1, two routes to 200.0.0.0/24 are available.

Step 4: Configure the ACL.

#Configure Device1.

Device1(config)#ip access-list standard 1
Device1(config-std-nacl)#permit 200.0.0.0 0.0.0.255
Device1(config-std-nacl)#commit
Device1(config-std-nacl)#exit

Step 5: Configure a metric offset.

#On Device1, configure the metric offset list and increase the metric of the route that has been learnt from interface VLAN3 and matches AL to 3.

Device1(config)#router rip
Device1(config-rip)#offset-list 1 in 3 vlan3
Device1(config-rip)#exit

Step 6: Check the result.