HP A5830 Configuration Manual: Configuring The Aging Timer For Dynamic Mac Address Entries

Layer 2 lan switching.
Hide thumbs
Step...
4.
Disable MAC
address learning on
the interface or all
ports in the port
group
Disabling MAC address learning on a VLAN
To disable MAC address learning on a per-VLAN basis:
Step...
1.
Enter system view
2.
Enable global MAC address
learning
3.
Enter VLAN view
4.
Disable
learning on the VLAN

Configuring the aging timer for dynamic MAC address entries

The MAC address table uses an aging timer for dynamic MAC address entries for security and efficient
use of table space.
If a dynamic MAC address entry has failed to update before the aging timer expires, the device
deletes the entry.
This aging mechanism ensures that the MAC address table can quickly update to accommodate the
latest network changes.
Reduce broadcasts on a stable network by disabling the aging timer to prevent dynamic entries from
unnecessarily aging out.
Reducing broadcasts improves network performance.
Reducing broadcasts also enhances security because fewer data packet will reach unintended
destinations.
Set the aging timer appropriately.
Too long an aging interval can cause the MAC address table to retain outdated entries, exhaust the
MAC address table resources, and fail to update its entries to accommodate the latest network
changes.
Too short an interval can result in removal of valid entries, causing unnecessary broadcasts, which
can affect device performance.
To configure the aging timer for dynamic MAC address entries:
Step...
1.
Enter system view
Command...
mac-address mac-learning disable
Command...
system-view
undo mac-address mac-learning
disable
vlan vlan-id
MAC
address
mac-address mac-learning disable
Command...
system-view
Remarks
Required
Enabled by default
Remarks
Optional
Enabled by default
Required
Enabled by default
Remarks
20

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