Allied Telesis AT-FS970M Series - Manual (Page 517)

AT-FS970M Switch Command Line User’s Guide
517
SWITCHPORT BLOCK INGRESS-MULTICAST
Syntax
switchport block ingress-multicast
Parameters
None
Mode
Port Interface mode
Description
Use this command to block ingress multicast packets on ports.
Note
This feature does not block multicast packets that have reserved
multicast addresses in the range of 01:80:C2:00:00:00 to
01:80:C2:00:00:0F.
Note
If IGMP snooping is disabled on the switch, all reports are
suppressed on a port even if you enable this command. By default,
IGMP snooping is disabled on the switch. For more information
about this feature, see Chapter 38, “Internet Group Management
Protocol (IGMP) Snooping” on page 577.
Confirmation Command
“SHOW INTERFACE” on page 229.
Example
This example blocks ingress multicast packets on ports 12 to 18:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.12-port1.0.18
awplus(config-if)# switchport block ingress-multicast