Reference Guide
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.
Example Configuring an (S,G) Expiry Time
FTOS(conf)#ip access-list extended SGtimer
FTOS(config-ext-nacl)#permit ip 10.1.2.3/24 225.1.1.0/24
FTOS(config-ext-nacl)#permit ip any 232.1.1.0/24
FTOS(config-ext-nacl)#permit ip 100.1.1.0/16 any
FTOS(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
FTOS(config-ext-nacl)#exit
FTOS(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
Example of Viewing an RP on a Loopback Interface
FTOS#sh run int loop0
!
interface Loopback 0
ip address 1.1.1.1/32
ip pim sparse-mode
no shutdown
FTOS#sh run pim
!
ip pim rp-address 1.1.1.1 group-address 224.0.0.0/4
Overriding Bootstrap Router Updates
PIM-SM routers must know the address of the RP for each group for which they have (*,G) entry.
This address is obtained automatically through the bootstrap router (BSR) mechanism or a static RP configuration.
Use the following command if you have configured a static RP for a group. If you do not use the override option with
the following command, the RPs advertised in the BSR updates take precedence over any statically configured RPs.
• Use the override option to override bootstrap router updates with your static RP configuration.
ip pim rp-address
To display the assigned RP for a group, use the show ip pim rp command from EXEC privilege mode.
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