Reference Guide

Multicast | 1053
Command
History
Usage
Information
This features allows the user to limit the number of multicast entries on the system.
This number is the sum total of all the multicast entries on all line cards in the system.
On each line card, the multicast module will only install the maximum possible
number of entries, depending on the configured CAM profile.
The IN-L3-McastFib CAM partition is used to store multicast routes and is a separate
hardware limit that is exists per port-pipe. Any software-configured limit might be
superseded by this hardware space limitation. The opposite is also true, the CAM
partition might not be exhausted at the time the system-wide route limit set by the ip
multicast-limit is reached.
Related
Commands
ip multicast-routing
c e s
Enable IP multicast forwarding.
Syntax ip multicast-routing
To disable multicast forwarding, enter no ip multicast-routing.
Defaults
Disabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
You must enter this command to enable multicast on the E-Series.
After you enable multicast, you can enable IGMP and PIM on an interface. In the
INTERFACE mode, enter the ip pim sparse-mode command to enable IGMP and
PIM on the interface.
Related
Commands
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 7.8.1.0 Introduced on C-Series
Version 7.6.1.0 Introduced on E-Series
show ip igmp groups View the IGMP groups.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
E-Series legacy command
ip pim sparse-mode Enable IGMP and PIM on an interface.