HP MSR2003 User Manual

293
To enable the state refresh feature on all routers in IPv6 PIM-DM domain:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable the state refresh feature.
ipv6 pim state-refresh-capable
By default, the state refresh feature
is enabled.
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:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IPv6 PIM view.
ipv6 pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure the interval to send
state refresh messages.
state-refresh-interval interval
By default, the interval to send
refresh messages is 60 seconds.
4. Configure the time to wait
before receiving a new state
refresh message.
state-refresh-rate-limit time
By default, the waiting time is 30
seconds.
5. Configure the hop limit value of
state refresh messages.
state-refresh-hoplimit
hoplimit-value
By default, the hop limit value of
state refresh messages is 255.
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 "Configuring common
IP
v
6 PIM timers."

HP MSR2003 Specifications

General

Brand	HP
Model	MSR2003
Category	Network Router
Language	English