Reference Guide
1056 | Multicast
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restrict-flooding
e
t
Prevent Layer 2 multicast traffic from being flooded on ports below a specified link 
speed.
Syntax
restrict-flooding multicast
 min-speed speed
Parameters
Defaults
None
Command Modes
INTERFACE VLAN
Command
History
Usage
Information
This command restricts flooding for all unknown multicast traffic on ports below a 
certain speed. If you want some multicast traffic to be flooded on slower ports, use 
the command 
mac-flood-list without the min-speed option, in combination with 
restrict-flooding. With mac-flood-list you specify the traffic you want to be flooded using 
a MAC address range.
You may not use unicast MAC addresses when specifying MAC address ranges, and 
do not overlap MAC addresses ranges, when creating multiple mac-flood-list entries 
for the same VLAN. Restricted Layer 2 Flooding is not compatible with MAC 
accounting or VMANs.
Related
Commands
show ip mroute 
c e s
View the Multicast Routing Table.
Syntax
show ip mroute
 [static | group-address [source-address] | active [rate] | count | snooping [vlan 
vlan-id] 
[group-address [source-address]] | summary]
Parameters
min-speed min-speed
Enter the minimum link speed that a port must have to receive 
flooded multicast traffic.
Range: 1000
Version 7.7.1.0 Introduced on E-Series TeraScale
mac-flood-list Flood multicast frames with specified MAC addresses to all ports in a 
VLAN.
static
(OPTIONAL) Enter the keyword static to view static multicast routes. 
group-address 
[source-address]
(OPTIONAL) Enter the multicast group-address to view only routes 
associated with that group.
Enter the source-address to view routes with that group-address and 
source-address.










