Reference Guide

Version 7.8.1.0 Introduced on the C-Series.
Version 7.6.1.0 Introduced on the E-Series.
Usage
Information
This features allows you 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 only installs the maximum possible number of entries, depending on the
configured CAM profile.
Use the IN-L3-McastFib CAM partition to store multicast routes. It is a separate hardware limit
that 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 Any software-configured limit might be superseded by this hardware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 command is reached.
Related
Commands
show ip igmp groups – shows the IGMP groups.
ip multicast-routing
Enable IP multicast forwarding.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
ip multicast-routing
To disable multicast forwarding, use the no ip multicast-routing command.
Defaults Disabled.
Command Modes CONFIGURATION
Command History
Version 8.3.7.0 Introduced on the S4810.
E-Series legacy
command
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 INTERFACE
mode, enter the ip pim sparse-mode command to enable IGMP and PIM on the
interface.
Related
Commands
ip pim sparse-mode – enables IGMP and PIM on an interface.
mac-flood-list
Provide an exception to the restrict-flood configuration so that multicast frames within a specified MAC address range
to be flooded on all ports in a VLAN.
E-Series
Syntax
mac-flood-list mac-address mask vlan vlan-list [min-speed
speed]
1132