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[RouterA-GigabitEthernet2/0/1] ip irdp multicast

# Specify the IP address 192.168.1.0 and preference 400 for GigabitEthernet 2/0/1 to

proxy-advertise.

[RouterA-GigabitEthernet2/0/1] ip irdp address 192.168.1.0 400

2. Configure Router B:

# Specify an IP address for GigabitEthernet 2/0/1.

<RouterB> system-view

[RouterB] interface gigabitethernet 2/0/1

[RouterB-GigabitEthernet2/0/1] ip address 10.154.5.2 24

# Enable IRDP on GigabitEthernet 2/0/1.

[RouterB-GigabitEthernet2/0/1] ip irdp

# Specify preference 500 for advertised IP addresses on GigabitEthernet 2/0/1.

[RouterB-GigabitEthernet2/0/1] ip irdp preference 500

# Specify the multicast address 224.0.0.1 as the destination IP address for RAs sent by

GigabitEthernet 2/0/1.

[RouterB-GigabitEthernet2/0/1] ip irdp multicast

# Specify the IP address 192.168.2.0 and preference 400 for GigabitEthernet 2/0/1 to

proxy-advertise.

[RouterB-GigabitEthernet2/0/1] ip irdp address 192.168.2.0 400

Verifying the configuration

# Display the routing table for Host A.

[HostA@localhost ~]$ netstat -rne

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

10.154.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1

192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1

192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1

0.0.0.0 10.154.5.1 0.0.0.0 UG 0 0 0 eth1

The output shows that the default route on Host A points to IP address 10.154.5.1, and Host A has

routes to 192.168.1.0/24 and 192.168.2.0/24.

# Display the routing table for Host B.

[HostB@localhost ~]$ netstat -rne