Reference Guide

PIM Sparse-Mode (PIM-SM) | 673
Figure 30-3. Viewing the PIM Multicast Routing Table
Configurable S,G Expiry Timers
By default S, G entries expire in 210 seconds. You can configure a global expiry time (for all (S,G) entries)
or configure a expiry time for a particular entry. If both are configured, the ACL supercedes the global
configuration for the specified entries.
When an expiry time created, deleted, or updated, the changes are applied when the keep alive timer
refreshes.
To configure a global expiry time:
Configure the expiry time for a particular (S,G) entry:
Task Command Command Mode
Enable global expiry timer for S, G entries
Range 211-86400 seconds
Default: 210
ip pim sparse-mode
sg-expiry-timer seconds
CONFIGURATION
Step Task Command Syntax Command Mode
1 Create an Extended ACL ip access-list extended access-list-name CONFIGURATION
2 Specify the source and group
to which the timer will be
applied using extended ACLs
with permit rules only.
[seq sequence-number] permit ip
source-address/mask | any | host
source-address} {destination-address/mask |
any | host destination-address}
CONFIG-EXT-NACL
FTOS#show ip pim tib
PIM Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode
(*, 192.1.2.1), uptime 00:29:36, expires 00:03:26, RP 10.87.2.6, flags: SCJ
Incoming interface: GigabitEthernet 4/12, RPF neighbor 10.87.3.5
Outgoing interface list:
GigabitEthernet 4/11
GigabitEthernet 7/13
(10.87.31.5, 192.1.2.1), uptime 00:01:24, expires 00:02:26, flags: FT
Incoming interface: GigabitEthernet 7/11, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 4/11
GigabitEthernet 4/12
GigabitEthernet 7/13
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