Configuring The Mac Learning Limit On Ports; Displaying And Maintaining Mac Address Tables - HP 6600 Configuration Manual

Step
2. Configure the aging
timer for dynamic
MAC address
entries.
You can reduce floods on a stable network by disabling the aging timer to prevent dynamic entries from
unnecessarily aging out. By reducing floods, you improve not only network performance, but also
security, because you reduce the chances that a data packet will reach unintended destinations.

Configuring the MAC learning limit on ports

As the MAC address table grows, the forwarding performance of your device might degrade. To prevent
the MAC address table from getting so large that the forwarding performance degrades, you can limit
the number of MAC addresses that a port can learn.
To configure the MAC learning limit on a Layer 2 Ethernet interface, Layer 2 aggregate interface, or all
ports in a port group:
Step
1. Enter system view.
2. Enter interface view or port
group view.
3. Configure the MAC
learning limit on the
interface or port group.

Displaying and maintaining MAC address tables

Task
Display MAC address table
information.
Display the aging timer for
dynamic MAC address
entries.
Display the system or interface
MAC address learning state.
Command
mac-address timer { aging
seconds | no-aging }
Command
system-view
•
Enter Layer 2 Ethernet or
aggregate interface view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual
port-group-name
mac-address max-mac-count
count
Command
display mac-address [ mac-address [ vlan vlan-id ] |
[ [ dynamic | static ] [ interface interface-type
interface-number ] | blackhole ] [ vlan vlan-id ]
[ count ] ] [ | { begin | exclude | include }
regular-expression ]
display mac-address aging-time [ | { begin |
exclude | include } regular-expression ]
display mac-address mac-learning [ interface-type
interface-number ] [ | { begin | exclude | include }
regular-expression ]
5
Remarks
Optional.
The default aging timer for .dynamic MAC address
entries is 300 seconds.
The no-aging keyword disables the aging timer.
Remarks
N/A
Use either command.
Settings in interface view take effect only
on the specific interface. Settings in port
group view take effect on all member
ports in the port group.
By default, the MAC learning limit on an
interface is not configured.
Remarks
Available in any
view.
Available in any
view.
Available in any
view.