Allied Telesis AT-9000 Series - Switchport Block Ingress-Multicast

AT-9000 Switch Command Line User’s Guide
495
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 25, “Internet Group Management
Protocol (IGMP) Snooping” on page 467.
Confirmation Command
“SHOW INTERFACE” on page 221.
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