
Configuring IGMP Relay
117355-C Rev 00
9-21
In Figure 9-7, for example:
1. The IGMP Relay device uses RIP to advertise net_1, net_2, and net_3 to the
DVMRP multicast router. The RIP routes are stored in the IP unicast routing
table.
2. The inject unicast route policy causes DVMRP to copy the three routes from
the IP unicast routing table and inject them into the DVMRP routing table.
For instructions, see “Configuring an Inject Unicast Route Policy” on page 4-62.
Figure 9-7. DVMRP Inject Unicast Route Policy
net_1
net_1 net_2
net_3
net_2
net_3
IP0086A
DVMRP
router
RIP
DVMRP
inject unicast
route policy
net_1
net_2
net_3
2.
1.
RIP
IGMP
Relay
IP unicast
routing table
DVMRP
routing table
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