Dell PowerConnect B-RX Configuration Manual page 1333

Syntax: [no] message-interval <seconds>
The <seconds> parameter specifies the number of seconds and can be from 1 – 65535. The
default is 60 seconds.
Setting the inactivity timer
The router deletes a forwarding entry if the entry is not used to send multicast packets. The IPv6
PIM inactivity timer defines how long a forwarding entry can remain unused before the router
deletes it.
To apply a IPv6 PIM inactivity timer of 160 seconds to all IPv6 PIM interfaces, enter the following.
BigIron RX(config)# ipv6 router pim
BigIron RX(config-ipv6-pim-router)# inactivity-timer 160
Syntax: [no] inactivity-timer <seconds>
The <seconds> parameter specifies the number of seconds. Valid range is 60 - 3600. The default
is 180 seconds.
Changing the hello timer
This parameter defines the interval at which periodic hellos are sent out PIM interfaces. Routers
use hello messages to inform neighboring routers of their presence. To change the hello timer,
enter a command such as the following.
BigIron RX(config)# ipv6 router pim
BigIron RX(config-ipv6-pim-router)#hello-timer 62
Syntax: [no] hello-timer <seconds>
The <seconds> parameter specifies the number of seconds. Valid range is 10 - 3600. The default
is 60 seconds.
Enabling source-specific multicast
Using the Any-Source Multicast (ASM) service model, sources and receivers register with a
multicast address. The protocol uses regular messages to maintain a correctly configured
broadcast network where all sources can send data to all receivers and all receivers get broadcasts
from all sources.
With Source-specific multicast (SSM), the "channel" concept is introduced where a "channel"
consists of a single source and multiple receivers who specifically register to get broadcasts from
that source. Consequently, receivers are not burdened with receiving data they have no interest in,
and network bandwidth requirements are reduced because the broadcast need only go to a
sub-set of users. The address range ff30::/12 has been assigned by the Internet Assigned
Numbers Authority (IANA) for use with SSM.
SSM simplifies PIM-SM by eliminating the RP and all protocols related to the RP.
Configuring source-specific multicast
PIM-SM must be enabled on any ports that you want SSM to operate. Enter the ssm-enable
command under the IPv6 router PIM level to globally enable source specific multicast filtering.
BigIron RX(config)# ipv6 router pim
BigIron RX(config-ipv6-pim-router)# ssm-enable
BigIron RX Series Configuration Guide
53-1002253-01
49
IPv6 PIM sparse
1257