Configuring State Refresh Parameters; Configuring Ipv6 Pim-Dm Graft Retry Timer - HP MSR2003 Configuration Manual

To enable the state refresh feature on all routers in IPv6 PIM-DM domain:
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 IPv6 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 receiving the next state refresh message.
If the router receives a new state refresh message within the specified waiting time, it discards it. If this
timer times out, the router accepts a new state refresh message, refreshes its own IPv6 PIM-DM state, and
resets the waiting timer.
The hop limit 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 hop limit
comes down to 0. A state refresh message with a large hop limit value might cycle on a small network.
To control the propagation scope of state refresh messages, configure an appropriate hop limit value
based on the network size on the router directly connected with the IPv6 multicast source.
To configure state refresh parameters:
Step
1. Enter system view.
2. Enter IPv6 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 hop limit value of
state refresh messages.

Configuring IPv6 PIM-DM graft retry timer

In IPv6 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 IPv6 PIM-DM, see
IPv6 PIM timers."
Command
system-view
interface interface-type
interface-number
ipv6 pim state-refresh-capable
Command
system-view
ipv6 pim [ vpn-instance
vpn-instance-name ]
state-refresh-interval interval
state-refresh-rate-limit time
state-refresh-hoplimit
hoplimit-value
293
Remarks
N/A
N/A
By default, the state refresh feature
is enabled.
Remarks
N/A
N/A
By default, the interval to send
refresh messages is 60 seconds.
By default, the waiting time is 30
seconds.
By default, the hop limit value of
state refresh messages is 255.
"Configuring common