R0106-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V7)

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# Configure UDP helper to convert broadcast packets to multicast packets destined for 225.1.1.1 on

GigabitEthernet 2/1/1.

[RouterA] interface gigabitethernet 2/1/1

[RouterA-GigabitEthernet2/1/1] ip address 10.110.1.1 16

[RouterA-GigabitEthernet2/1/1] udp-helper broadcast-map 225.1.1.1

[RouterA-GigabitEthernet2/1/1] quit

# Enable IP multicast routing globally.

[RouterA] multicast routing

[RouterA-mrib] quit

# Enable PIM-DIM and IGMP on GigabitEthernet 2/1/1.

[RouterA] interface gigabitethernet 2/1/1

[RouterA-GigabitEthernet2/1/1] pim dm

[RouterA-GigabitEthernet2/1/1] igmp enable

# Configure GigabitEthernet 2/1/1 as a static member of the multicast group 225.1.1.1.

[RouterA-GigabitEthernet2/1/1] igmp static-group 225.1.1.1

# Enable PIM-DIM and IGMP on GigabitEthernet 2/1/2.

[RouterA-GigabitEthernet2/1/2] pim dm

[RouterA-GigabitEthernet2/1/2] igmp enable

# Configure GigabitEthernet 2/1/2 as a static member of the multicast group 225.1.1.1.

[RouterA-GigabitEthernet2/1/2] igmp static-group 225.1.1.1

Verifying the configuration

Verify that you can capture multicast packets from Router A on Router B.

Configuring UDP helper to convert multicast to broadcast

Network requirements

As shown in Figure 72, GigabitEthernet 2/1/1 of Router B is a member of the multicast group 225.1.1.1.

Configure UDP helper to convert multicast to broadcast on GigabitEthernet 2/1/1 of Router A. This

feature enables Router A to forward the multicast packets with UDP destination port number 55 and

destination IP address 225.1.1.1 from Router B to all hosts on 10.110.0.0/16.

Figure 72 Network diagram

Configuration procedure

Make sure Router A can reach the subnet 10.2.0.0/16.