Configuring State Refresh Parameters; Configuring Pim-Dm Graft Retry Timer - HP MSR2003 Configuration Manual

Step
1. Enter system view.
2. Enter interface view.
3. Enable the state refresh feature.

Configuring state refresh parameters

The router directly connected with the multicast source periodically sends state refresh messages. You can
configure the interval for sending such messages on that router.
A router might receive duplicate state refresh messages within a short time. To prevent this situation, you
can configure the amount of time that the router must wait before it receives next state refresh message.
If the router receives a new state refresh message within the specified waiting time, it discards the
message. If this timer times out, the router accepts a new state refresh message, refreshes its own PIM-DM
state, and resets the waiting timer.
The TTL value of a state refresh message decrements by 1 whenever it passes a router before it is
forwarded to the downstream node. The state refresh message stops being forwarded when the TTL value
comes down to 0. A state refresh message with a large TTL value might cycle on a small network. To
effectively control the propagation scope of state refresh messages, configure an appropriate TTL value
based on the network size on the router directly connected with the multicast source.
To configure state refresh parameters:
Step
1. Enter system view.
2. Enter PIM view.
3. Configure the interval to send state
refresh messages.
4. Configure the time to wait before
receiving a new state refresh message.
5. Configure the TTL value of state refresh
messages.

Configuring PIM-DM graft retry timer

In PIM-DM, only the graft process uses the acknowledgment mechanism. After a router sends a graft
message, it starts a graft retry timer. If the router does not receive a graft-ack message from the upstream
router when the timer expires, the router sends another graft message. The router keeps sending graft
messages until it receives a graft-ack message.
For more information about the configuration of other timers in PIM-DM, see
timers."
To configure the graft retry timer:
Command
system-view
interface interface-type
interface-number
pim state-refresh-capable
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
state-refresh-interval interval
state-refresh-rate-limit time
state-refresh-ttl ttl-value
95
Remarks
N/A
N/A
By default, the state refresh
feature is enabled.
Remarks
N/A
N/A
The default setting is 60
seconds.
The default setting is 30
seconds.
The default setting 255.
"Configuring common PIM