3Com S7906E - Switch, Configuration Manual

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To do... Use the command... Remarks
Enter public instance PIM view
or VPN instance PIM view pim [ vpn-instance
vpn-instance-name ]
—
Configure the priority for DR
election hello-option dr-priority
priority
Optional
1 by default
Configure PIM neighbor
timeout time
hello-option holdtime interval
Optional
105 seconds by default
Configure the prune message
delay time (LAN-delay)
hello-option lan-delay interval
Optional
500 milliseconds by default
Configure the prune override
interval hello-option override-interval
interval
Optional
2,500 milliseconds by default
Disable join suppression
hello-option
neighbor-tracking
Required
Enabled by default
Configuring hello options on an interface
Follow these steps to configure hello options on an interface:
To do... Use the command... Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure the priority for DR
election pim hello-option dr-priority
priority
Optional
1 by default
Configure PIM neighbor
timeout time pim hello-option holdtime
interval
Optional
105 seconds by default
Configure the prune message
delay time (LAN-delay) pim hello-option lan-delay
interval
Optional
500 milliseconds by default
Configure the prune override
interval
pim hello-option
override-interval interval
Optional
2,500 milliseconds by default
Disable join suppression
pim hello-option
neighbor-tracking
Required
Enabled by default
Configure the interface to reject
hello messages without a
generation ID
pim require-genid
Required
By default, hello messages
without Generation_ID are
accepted
Configuring the Prune Delay
If a downstream router does not support the prune override interval field, you can configure a prune
delay interval on the upstream router so that it will not perform the prune action immediately after
receiving the prune message; instead, it maintains the current forwarding state for the prune delay
interval. In this period, if the upstream router receives a join message from the downstream router, it
cancels the prune action.