Configuring The Mac Learning Limit On Ports; Enabling Mac Address Roaming - HP 3600 v2 series Configuration Manual

accommodate the latest network changes. Too short an interval might result in removal of valid entries,
causing unnecessary broadcasts, which might affect device performance.
Follow these steps to configure the aging timer for dynamic MAC address entries:
To do...
Enter system view
Configure the aging timer
for dynamic MAC address
entries
You can reduce broadcasts on a stable network by disabling the aging timer to prevent dynamic entries
from unnecessarily aging out. By reducing broadcasts, 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

To prevent the MAC address table from getting too large, you can limit the number of MAC addresses
that a port can obtain.
Follow these steps to configure the MAC learning limit on a Layer 2 Ethernet interface or all ports in a port
group:
To do...
Enter system view
Enter interface view or
port group view
Configure the MAC
learning limit on the
interface or port group
NOTE:
Layer 2 aggregate interfaces do not support the mac-address max-mac-count command.
•
• Do not configure the MAC learning limit on any member ports of an aggregation group. Otherwise, the
member ports cannot be selected.

Enabling MAC address roaming

After you enable MAC address roaming on an IRF fabric, each member switch advertises learned MAC
addresses to other member switches.
As Figure 4
connect to AP C and AP D, respectively. When Client A associates with AP C, Device A learns the MAC
address of Client A and advertises it to the member switch Device B.
Use the command...
system-view
mac-address timer
{ aging seconds |
no-aging }
Use the command...
system-view
Enter Layer 2 Ethernet interface
view:
interface interface-type
interface-number
Enter port group view:
port-group manual
port-group-name
mac-address max-mac-count count
shows, Device A and Device B form an IRF fabric enabled with MAC address roaming. They
Remarks
—
Optional
300 seconds by default.
The no-aging keyword disables the aging timer.
Remarks
—
Required
Use either command.
Settings in Layer 2 Ethernet interface view
take effect on the interface only. Settings in
port group view take effect on all member
ports in the port group.
Required
No MAC learning limit is configured by
default.
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