Configuring Common Pim Timers - HP MSR2003 Configuration Manual

Configuring hello message options on an interface
Step
1. Enter system view.
2. Enter interface view.
3. Set the DR priority.
4. Set the neighbor lifetime.
Set the prune delay.
5.
6. Set the override interval.
7. Enable the neighbor tracking
function.
8. Enable
messages
Generation ID option.

Configuring common PIM timers

IMPORTANT:
To prevent the upstream neighbors from aging out, you must configure the interval for sending join/prune
messages to be less than the joined/pruned state holdtime timer.
PIM routers periodically send hello messages to discover PIM neighbors, and maintain PIM neighbor
relationship.
After receiving a hello message, a PIM router waits for a random time period before sending a hello
message. This random time period is smaller than the maximum delay for sending hello messages. It is
used to avoid collisions when multiple PIM routers send hello messages simultaneously
A PIM router periodically sends join/prune messages to its upstream routers for state update. A
join/prune message contains the joined/pruned state holdtime value. This value is used by an upstream
router to determine how long it will keep the joined state or pruned state for the downstream interfaces.
When a router fails to receive subsequent multicast data from the multicast source S, the router does not
immediately remove the corresponding (S, G) entry. Instead, it maintains the (S, G) entry for a period of
time (known as, the multicast source lifetime) before deleting the (S, G) entry.
You can configure common PIM timers in PIM view or interface view. The configurations made in PIM
view are effective on all interfaces. The configurations made in interface view are effective on only the
current interface. If you configure common PIM timers in both PIM view and interface view, the
configuration in interface view always takes precedence.
TIP:
For a network without special requirements, HP recommends using the defaults.
Command
system-view
interface interface-type
interface-number
pim hello-option dr-priority priority
pim hello-option holdtime time
pim hello-option lan-delay delay
pim hello-option override-interval
interval
pim hello-option neighbor-tracking
dropping hello
without the
pim require-genid
112
Remarks
N/A
N/A
The default setting is 1.
The default setting is 105 seconds.
The default setting is 500
milliseconds.
The default setting is 2500
milliseconds.
By default, the neighbor tracking
function is disabled.
By default, an interface accepts
hello messages without the
Generation ID option.