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 [acl | 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
744
PIM Sparse-Mode (PIM-SM)
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