Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) - Manual (Page 174)

162 Multi-Service IronWare Multicast Configuration Guide
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IPv6 PIM Sparse
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The seconds parameter specifies the number of seconds. The valid range is from 10 through 50
seconds. The default is 10 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 an IPv6 PIM inactivity timer of 160 seconds to all IPv6 PIM interfaces, enter the following.
Brocade(config)# ipv6 router pim
Brocade(config-ipv6-pim-router)# inactivity-timer 160
To apply an IPv6 PIM inactivity timer of 160 seconds for a specified VRF, enter the commands as
shown in the following example.
Brocade(config)# ipv6 router pim vrf blue
Brocade(config-ipv6-pim-router-vrf-blue)# inactivity-timer 160
Syntax: [no] inactivity-timer seconds
The seconds parameter specifies the number of seconds. The valid range is 60 through 3600
seconds. The default is 180 seconds.
Changing the hello timer
The hello timer defines the interval at which periodic hellos are sent out to 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.
Brocade(config)# ipv6 router pim
Brocade(config-ipv6-pim-router)# hello-timer 62
To change the hello timer for a specified VRF, enter the commands as shown in the following
example.
Brocade(config)# ipv6 router pim vrf blue
Brocade(config-ipv6-pim-router-vrf-blue)# hello-timer 62
Syntax: [no] hello-timer seconds
The seconds parameter specifies the number of seconds. The valid range is 10 through 3600
seconds. 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 that 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 subset
of users. The address range ff30:/12 has been assigned by the Internet Assigned Numbers
Authority (IANA) for use with SSM.
SSM simplifies IPv6 PIM-SM by eliminating the RP and all protocols related to the RP.