445
Step
Command
Remarks
6.
Configure the join/prune
timeout timer.
pim ipv6 holdtime join-prune
interval
Optional.
210 seconds by default.
7.
Configure assert timeout
timer.
pim ipv6 holdtime assert
interval
Optional.
180 seconds by default.
Configuring join/prune message sizes
A large size of a join/prune message might result in loss of a larger amount of information if a
message is lost. You can set a small value for the maximum size of each join/prune message to
reduce the impact in case of the loss of a message.
By controlling the maximum number of (S, G) entries in each join/prune message, you can effectively
reduce the number of (S, G) entries sent per unit of time.
To configure join/prune message sizes:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter public network IPv6
PIM view or VPN instance
IPv6 PIM view.
pim ipv6
[
vpn-instance
vpn-instance-name
]
N/A
3.
Configure the maximum size
of each join/prune message.
jp-pkt-size
packet-size
Optional.
8100 bytes by default.
4.
Configure the maximum
number of (S, G) entries in
each join/prune message.
jp-queue-size
queue-size
Optional.
1020 by default.
IMPORTANT:
If IPv6 PIM snooping–enabled switches are deployed in the IPv6 PIM network, be sure to set a value
no greater than the IPv6 path MTU for the maximum size of each join/prune message on the
receiver-side edge IPv6 PIM devices.
Configuring IPv6 PIM to work with BFD
IPv6 PIM uses hello messages to elect a DR for a multi-access network. The elected DR is the only
multicast forwarder on the multi-access network.
If the DR fails, a new DR election process will start after the DR is aged out. However, it might take a
long period of time. To start a new DR election process immediately after the original DR fails, you
can enable IPv6 PIM to work with Bidirectional Forwarding Detection (BFD) on a multi-access
network to detect failures of the links among IPv6 PIM neighbors. You must enable IPv6 PIM to work
with BFD on all IPv6 PIM-capable routers on a multi-access network, so that the IPv6 PIM neighbors
can fast detect DR failures and start a new DR election process.
Before you configure this feature on an interface, be sure to enable IPv6 PIM-DM or IPv6 PIM-SM on
the interface.
To enable IPv6 PIM to work with BFD:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
