Configuring Ipv6 Pim-Ssm; Ipv6 Pim-Ssm Configuration Task List; Configuration Prerequisites - 3Com MSR 50 Series Configuration Manual

1256 C 74: IP 6 PIM C
HAPTER V
Configuring IPv6
PIM-SSM
IPv6 PIM-SSM
Configuration Task List
Configuration
Prerequisites
ONFIGURATION
IPv6 multicast traffic increases. Initially, an IPv6 PIM-SM router forwards IPv6
multicast packets through the RPT. However, when the traffic rate of IPv6 multicast
packets reaches a threshold (configurable on routers, but not on switches), the
receiver-side DR immediately initiates an RPT-to-SPT switchover process.
Both the receiver-side DR and the RP can periodically check the passing-by IPv6
multicast packets (this function is not available with switches) and thus trigger
RPT-to-SPT switchover.
Follow these steps to configure RPT-to-SPT switchover:
To do...
Enter system view
Enter IPv6 PIM view
Configure RPT-to-SPT
switchover
Configure the interval of
checking the IPv6 multicast
traffic rate threshold before
RPT-to-SPT switchover
n
The support for the timer spt-switch command depends on the specific
■
device model.
Typically, you need to configure the above-mentioned parameters on the
■
receiver-side DR and the RP only. Since both the DR and RP are elected,
however, you should carry out these configurations on the routers that may
win the DR election and on the C-RPs that may win RP elections.
n
The IPv6 PIM-SSM mode needs the support of MLDv2. Therefore, be sure to
enable MLDv2 on IPv6 PIM routers with receivers attached to them.
Complete these tasks to configure IPv6 PIM-SSM:
Task
"Enabling IPv6 PIM-SM" on page 1257
"Configuring the IPv6 SSM Group Range" on page 1257
"Configuring IPv6 PIM Common Information" on page 1258
Before configuring IPv6 PIM-SSM, complete the following task:
Configure any IPv6 unicast routing protocol so that all devices in the domain
■
are interoperable at the network layer.
Use the command...
system-view
pim ipv6
spt-switch-threshold
{ traffic-rate | infinity }
[ group-policy
acl6-number [ order
order-value ] ]
timer spt-switch interval
Remarks
-
-
Optional
By default, the device switches to
the SPT immediately after it
receives the first IPv6 multicast
packet from the RPT.
The traffic-rate argument is not
supported on a switch.
Optional
15 seconds by default
Remarks
Required
Optional
Optional