Enabling State-Refresh Capability; Configuring State-Refresh Parameters - HP MSR ASM Configuration Manual

Step
2. Create a VPN instance and
enter VPN instance view.
3. Configure an RD for the VPN
instance.
4. Enable IP multicast routing.
5. Enter interface view.
6. Bind the interface with a VPN
instance.
7. Enable PIM-DM.

Enabling state-refresh capability

Pruned interfaces resume multicast forwarding when the pruned state times out. To prevent this, the router
with the multicast source attached periodically sends an (S, G) state-refresh message, which is forwarded
hop-by-hop along the initial multicast flooding path of the PIM-DM domain, to refresh the prune timer
state of all the routers on the path. A shared-media subnet can have the state-refresh capability only if the
state-refresh capability is enabled on all PIM routers on the subnet.
To enable the state-refresh capability:
Step
1. Enter system view.
2. Enter interface view.
3. Enable the state-refresh
capability.

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.
A router might receive multiple state-refresh messages within a short time. Some messages might be
duplicated messages. To keep a router from receiving such duplicated messages, you can configure the
time that the router must wait before it receives next state-refresh message. If the router receives a new
state-refresh message within the waiting time, it discards the message. If this timer times out, the router
will accept a new state-refresh message, refresh its own PIM-DM state, and reset the waiting timer.
Command
ip vpn-instance vpn-instance-name
route-distinguisher
route-distinguisher
multicast routing-enable
interface interface-type
interface-number
ip binding vpn-instance
vpn-instance-name
pim dm
Command
system-view
interface interface-type
interface-number
pim state-refresh-capable
58
Description
N/A
For more information about this
command, see MPLS Command
Reference.
Not configured by default.
For more information about this
command, see MPLS Command
Reference.
Disabled by default.
N/A
By default, an interface belongs to
the public network, and is not
bound with any VPN instance.
For more information about this
command, see MPLS Command
Reference.
Disabled by default.
Remarks
N/A
N/A
Optional.
Enabled by default.