Command Reference Guide

3Com Router 5000 Family and Router 6000 Family promiscuous ● 283
Command Reference
promiscuous
Purpose Use the promiscuous command to set the Ethernet interface to operate in
promiscuous mode.
Use the undo promiscuous command to disable the Ethernet interface to operate
in promiscuous mode.
Syntax promiscuous
undo promiscuous
Parameters None
Default By default, the Ethernet interface is operating in non-promiscuous mode.
Example Set interface ethernet 0/0/0 to operate in promiscuous mode.
[3Com -Ethernet0/0/0] promiscuous
View This command can be used in the following views:
■ Ethernet Interface view
Description When the Ethernet interface is operating in promiscuous mode, it receives all correct
Ethernet packets without checking their MAC addresses, This mode is configured
when network listening applies.
After you enable the bridging function on an Ethernet interface and adds it to a
bridge-set, the interface enters promiscuous mode automatically. After removed from
the bridge-set, the interface enters non-promiscuous mode automatically.