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When you create, delete, or update an expiry time, the changes are applied when the keep alive timer
refreshes.
To configure a global expiry time or to configure the expiry time for a particular (S,G) entry, use the following
commands.
1
Enable global expiry timer for S, G entries.
CONFIGURATION mode
ip pim sparse-mode sg-expiry-timer seconds
The range is from 211 to 86,400 seconds.
The default is 210.
2
Set the expiry time for a specific (S,G) entry (as shown in the following example).
CONFIGURATION mode
ip pim sparse-mode sg-expiry-timer seconds sg-list access-list-name
The range is from 211 to 86,400 seconds.
The default is 210.
Example Configuring an (S,G) Expiry Time
NOTE:
The expiry time configuration is nullified and the default global expiry time is used if:
•
an ACL is specified in the ip pim sparse-mode sg-expiry-timer command, but the ACL has
not been created or is a standard ACL.
•
if the expiry time is specified for an (S,G) entry in a deny rule.
Dell(conf)#ip access-list extended SGtimer
Dell(config-ext-nacl)#permit ip 10.1.2.3/24 225.1.1.0/24
Dell(config-ext-nacl)#permit ip any 232.1.1.0/24
Dell(config-ext-nacl)#permit ip 100.1.1.0/16 any
Dell(config-ext-nacl)#show conf
!
ip access-list extended SGtimer
seq 5 permit ip 10.1.2.0/24 225.1.1.0/24
seq 10 permit ip any 232.1.1.0/24
seq 15 permit ip 100.1.0.0/16 any
Dell(config-ext-nacl)#exit
Dell(conf)#ip pim sparse-mode sg-expiry-timer 1800 sg-list SGtimer
To display the expiry time configuration, use the show running-configuration pim command from
EXEC Privilege mode.
Configuring a Static Rendezvous Point
The rendezvous point (RP) is a PIM-enabled interface on a router that acts as the root a group-specific tree;
every group must have an RP.
•
Identify an RP by the IP address of a PIM-enabled or Loopback interface.
ip pim rp-address
PIM Sparse-Mode (PIM-SM)
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