HP VPN Firewall Appliances Network Management Configuration Guide

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Changing an RPF route
1. Network requirements
PIM-DM runs in the network. All devices in the network support multicast. Router A, Router B, and
the firewall run OSPF. Typically, the receiver can receive the multicast data from the source
through the path Router A to the firewall, which is the same as the unicast route. Receiver can
receive the multicast data from the source through the path: Router A to Router B to the firewall,
which is different from the unicast route.
Figure 325 Network diagram
2. Configuration procedure
a. Assign an IP address and subnet mask to each interface according to Figure 325. (Details not
shown.)
b. Enable OSPF on the routers in the PIM-DM domain to make sure they are interop
erable at the
network layer and they can dynamically update their routing information. (Details not shown.)
c. Enable IP multicast routing, IGMP and PIM-DM:
# On the firewall, enable IP multicast routing globally, enable IGMP on GigabitEthernet 0/1,
and enable PIM-DM on each interface.
<Firewall> system-view
[Firewall] multicast routing-enable
[Firewall] interface gigabitethernet 0/1
[Firewall-GigabitEthernet0/1] igmp enable
[Firewall-GigabitEthernet0/1] pim dm
[Firewall-GigabitEthernet0/1] quit
[Firewall] interface gigabitethernet 0/2
[Firewall-GigabitEthernet0/2] pim dm
[Firewall-GigabitEthernet0/2] quit
[Firewall] interface gigabitethernet 0/3
[Firewall-GigabitEthernet0/3] pim dm
[Firewall-GigabitEthernet0/3] quit
Multicast static route
Router A Firewall
Router B
Eth1/3
30.1.1.2/24
Eth1/2
40.1.1.2/24
Eth1/1
50.1.1.1/24
Eth1/2
40.1.1.1/24
Eth1/1
20.1.1.2/24
GE0/2
20.1.1.1/24
GE0/3
30.1.1.1/24
GE0/1
10.1.1.1/24
Source Receiver
50.1.1.100/24 10.1.1.100/24
PIM-DM