Configuration Guide User guide

FastIron Configuration Guide 1553

53-1002494-02

PIM Sparse

Displaying multicast neighbor information

To display information about the Layer 3 switch PIM neighbors, enter the show ip pim neighbor

command at any CLI level.

Syntax: show ip pim neighbor

Table 263 shows the information displayed by the show ip pim neighbor command.

Displaying information about an upstream neighbor device

You can view information about the upstream neighbor device for a given source IP address for IP

PIM and DVMRP. The software uses the IP route table or multicast route table to lookup the

upstream neighbor device. For DVMRP, the software uses the DVMRP route table to locate the

upstream neighbor device.

Enter the show ip pim rpf command at the Privileged EXEC level of the CLI.

Brocade#show ip pim rpf 172.10.1.5 225.0.0.19

PIM sparse mcache of (172.10.1.5, 225.0.0.19) is used in RPF lookup

Upstream neighbor=40.1.1.1 on v40 using ip route

TABLE 263 Output of show ip pim neighbor

Field Description

Port The interface through which the Layer 3 switch is connected to the neighbor.

Neighbor The IP interface of the PIM neighbor interface.

Holdtime Indicates how many seconds the neighbor wants this Layer 3 switch to hold the entry for

this neighbor in memory. The neighbor sends the Hold Time in its Hello packets:

• If the Layer 3 switch receives a new Hello packet before the Hold Time received in the

previous packet expires, the Layer 3 switch updates its table entry for the neighbor.

• If the Layer 3 switch does not receive a new Hello packet from the neighbor before the

Hold time expires, the Layer 3 switch assumes the neighbor is no longer available and

removes the entry for the neighbor.

Age The number of seconds since the Layer 3 switch received the last hello message from the

neighbor.

UpTime The number of seconds the PIM neighbor has been up. This timer starts when the Layer 3

switch receives the first Hello messages from the neighbor.

GenID The Generation ID of the neighbor’s Hello messages.

Brocade#show ip pim neighbor

Total number of neighbors: 250 on 1 ports