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PIM Dense 3
1. If more than one device has the same DR priority on a subnet (as in the case of default DR
priority on all), the device with the numerically highest IP address on that subnet is elected as
the DR.
2. The DR priority information is used in the DR election ONLY IF ALL the PIM devices connected
to the subnet support the DR priority option. If there is at least one PIM device on the subnet
that does not support this option, then the DR election falls back to the backwards
compatibility mode in which the device with the numerically highest IP address on the subnet
is declared the DR regardless of the DR priority values.
Displaying basic PIM Dense configuration information
To display PIM Dense configuration information, enter the following command at any CLI level.
Brocade(config)# show ip pim dense
Global PIM Dense Mode Settings
Maximum Mcache : 12992 Current Count : 2
Hello interval : 30 Neighbor timeout : 105
Join/Prune interval : 60 Inactivity interval : 180
Hardware Drop Enabled : Yes Prune Wait Interval : 3
Graft Retransmit interval : 180 Prune Age : 180
Syntax: show ip pim [vrf vrf-name] dense
The vrf option allows you to display PIM dense configuration information for the VRF instance
identified by the vrf-name variable.
This display shows the following information.
TABLE 8
This field...
Output from the show ip pim dense command
Displays...
Maximum Mcache
Current Count
Hello interval
Neighbor timeout
Join/Prune interval
Inactivity interval
Hardware Drop Enabled
Prune Wait Interval
Graft Retransmit interval
Prune Age
The maximum number multicast cache entries allowed on the device.
The number of multicast cache entries currently used.
How frequently the device sends hello messages out the PIM dense
interfaces.
The interval after which a PIM device will consider a neighbor to be
absent.
How long a PIM device will maintain a prune state for a forwarding entry.
How long a forwarding entry can remain unused before the device
deletes it.
Displays Yes if the Passive Multicast Route Insertion feature is enabled
and No if it is not.
The amount of time a PIM device waits before stopping traffic to
neighbor devices that do not want the traffic. The value can be from zero
to three seconds. The default is three seconds.
The interval between the transmission of graft messages.
The number of packets the device sends using the path through the RP
before switching to using the SPT path.
FastIron Ethernet Switch IP Multicast Configuration Guide 79
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