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H3C Technologies H3C SecPath F1000-E User Manual

Page 658

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Assume that Host A needs to receive the information addressed to multicast group G (225.1.1.1).

After the multicast source S (10.110.5.100/24) sends multicast packets to the multicast group G,
an SPT is established through traffic flooding. Routers and the firewall on the SPT path (Router A

and SecPath in this example) have their (S, G) entries. Host A sends an IGMP report to Router A to

join the multicast group G, and a (*, G) entry is generated on Router A. You can use the display

pim routing-table command to display PIM routing table information on routers and the firewall.
For example:
# Display PIM routing table information on Router A.

[RouterA] display pim routing-table

Total 1 (*, G) entry; 1 (S, G) entry

(*, 225.1.1.1)

Protocol: pim-dm, Flag: WC

UpTime: 00:04:25

Upstream interface: NULL

Upstream neighbor: NULL

RPF prime neighbor: NULL

Downstream interface(s) information:

Total number of downstreams: 1

1: GigabitEthernet0/1

Protocol: igmp, UpTime: 00:04:25, Expires: never

(10.110.5.100, 225.1.1.1)

Protocol: pim-dm, Flag: ACT

UpTime: 00:06:14

Upstream interface: GigabitEthernet0/2

Upstream neighbor: 192.168.1.2

RPF prime neighbor: 192.168.1.2

Downstream interface(s) information:

Total number of downstreams: 1

1: GigabitEthernet0/1

Protocol: pim-dm, UpTime: 00:04:25, Expires: never

# Display PIM routing table information on SecPath.

[SecPath] display pim routing-table

Total 0 (*, G) entry; 1 (S, G) entry

(10.110.5.100, 225.1.1.1)

Protocol: pim-dm, Flag: LOC ACT

UpTime: 00:03:27

Upstream interface: GigabitEthernet0/1

Upstream neighbor: NULL

RPF prime neighbor: NULL

Downstream interface(s) information:

Total number of downstreams: 3

1: GigabitEthernet0/2

Protocol: pim-dm, UpTime: 00:03:27, Expires: never

2: GigabitEthernet0/3

Protocol: pim-dm, UpTime: 00:03:27, Expires: never