3Com S7906E - Switch, Configuration Manual

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1-5
To do… Use the command… Remarks
Disable global MAC address
learning mac-address mac-learning
disable
Required
Enabled by default.
When global MAC address learning is disabled, the learned MAC addresses remain valid until they age
out.
Disabling MAC address learning on ports
After enabling global MAC address learning, you may disable the function on a single port, or on all
ports in a port group as needed.
Follow these steps to disable MAC address learning on a port or port group:
To do… Use the command… Remarks
Enter system view system-view —
Enable global MAC address
learning undo mac-address
mac-learning disable
Optional
Enabled by default.
Enter Ethernet
interface view interface interface-type
interface-number
Enter port
group view port-group manual
port-group-name
Enter
Ethernet
interface
view, port
group view,
or Layer 2
aggregate
interface
view
Enter Layer 2
aggregate
interface view
interface bridge-aggregation
interface-number
Required
Use any of the three
commands.
Configurations made in
Ethernet interface view or
Layer 2 aggregate interface
view take effect on the current
interface only; configurations
made in port group view take
effect on all the member ports
in the port group.
Disable MAC address learning
on an Ethernet port or port
group
mac-address mac-learning
disable
Required
Enabled by default.
z
When global MAC address learning is disabled, the learned MAC addresses remain valid until they
age out.
z
For configuration about port groups, refer to Ethernet Interface Configuration in the Access
Volume .