Configuring State Refresh Parameters; Configuring Ipv6 Pim-Dm Graft Retry Timer - HP 5920 series Configuration Manual

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 until the hop limit value comes down to 0. In a small network, a state
refresh message might cycle in the 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.
Configure the time to wait
4.
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, graft is the only type of message that uses the acknowledgment mechanism. In an IPv6
PIM-DM domain, if a router does not receive a graft-ack message from the upstream router within the
specified time after it sends a graft message, the router keeps sending new graft messages at a
configurable interval (graft retry timer) until it receives a graft-ack message from the upstream router. For
more information about the configuration of other timers in IPv6 PIM-DM, see
PIM timers."
To configure the IPv6 PIM-DM graft retry timer:
Step
1. Enter system view.
2. Enter interface view.
3. Configure the graft retry timer.
Command
system-view
ipv6 pim
state-refresh-interval interval
state-refresh-rate-limit time
state-refresh-hoplimit
hoplimit-value
Command
system-view
interface interface-type
interface-number
ipv6 pim timer graft-retry interval
147
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 IPv6
Remarks
N/A
N/A
By default, the graft retry timer is 3
seconds.