HP 6125XLG Configuration Manual page 88

Blade switch ip multicast configuration guide
Table of Contents

Advertisement

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, and
it can avoid collisions that might occur 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, and an upstream router uses this
value to set a holdtime timer for the joined state or pruned state of 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.
Configuring common PIM timers globally
Step
1.
Enter system view.
2.
Enter PIM view.
3.
Set the interval to send hello
messages.
4.
Set the interval to send
join/prune messages.
5.
Set the joined/pruned state
holdtime timer.
6.
Set the multicast source
lifetime.
Configuring common PIM timers on an interface
Step
1.
Enter system view.
2.
Enter interface view.
3.
Set the interval to send hello
messages.
4.
Set the maximum delay for
sending hello messages.
5.
Set the interval to send
join/prune messages.
Command
system-view
pim
timer hello interval
timer join-prune interval
holdtime join-prune time
source-lifetime time
Command
system-view
interface interface-type
interface-number
pim timer hello interval
pim triggered-hello-delay delay
pim timer join-prune interval
81
Remarks
N/A
N/A
By default, the interval to send
hello messages is 30 seconds.
By default, the interval to send
join/prune messages is 60
seconds.
By default, the joined/pruned state
holdtime timer is 210 seconds.
By default, the multicast source
lifetime is 210 seconds.
Remarks
N/A
N/A
By default, the interval to send
hello messages is 30 seconds.
By default, the maximum delay for
sending hello messages is 5
seconds.
By default, the interval to send
join/prune messages is 60
seconds.

Advertisement

Table of Contents
loading

Table of Contents