H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500E Series Ethernet Switches Chapter 5 PIM Configuration
5-35
new generation ID. If a PIM router finds that the generation ID in a hello message from
the upstream router has changed, it assumes that the status of the upstream neighbor
is lost or the upstream neighbor has changed. In this case, it triggers a join message for
state update.
If you disable join suppression (namely, enable neighbor tracking), the upstream router
will explicitly track which downstream routers are joined to it. The join suppression
feature should be enabled or disabled on all PIM routers on the same subnet.
I. Configuring hello options globally
Follow these steps to configure hello options globally:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter PIM view
pim
—
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 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
Optional
Enabled by default
II. 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