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CONFIGURATION mode
ip access-list extended access-list-name
3. Specify the source and group to which the timer is applied using extended ACLs with permit rules only.
CONFIG-EXT-NACL mode
[seq sequence-number] permit ip source-address/mask | any | host source-address}
{destination-address/mask | any | host destination-address}
4. 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.
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
Dell#sh run int loop0
!
interface Loopback 0
ip address 1.1.1.1/32
ip pim sparse-mode
no shutdown
Dell#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.
PIM Sparse-Mode (PIM-SM)
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