F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101
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Configuring a destination blackhole MAC address entry
Ste
p
Command
Remarks
1. Enter system view. system-view N/A
2. Add or modify a
blackhole MAC
address entry.
mac-address blackhole mac-address vlan vlan-id
By default, no MAC
address entry is
configured.
Make sure you have
created 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 that entry. This aging mechanism makes sure the MAC address table can promptly
update to accommodate the latest network changes.
Set the aging timer appropriately. Too long an aging interval might 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retain outdated entries, exhaust the MAC address table resources, and fail to update its entries to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 might result in removal of valid entries,
causing unnecessary floods, which could affect device performance.
To configure the aging timer for dynamic MAC address entries:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Configure the aging timer for
dynamic MAC address
entries.
mac-address timer { aging seconds
| no-aging }
Optional.
The default setting is 300 seconds.
The no-aging keyword disables the
aging timer.
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.
Displaying and maintaining MAC address tables
Task Command
Remarks
Display MAC address table
information.
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 ]
Available in any
view.
Display the aging timer for
dynamic MAC address
entries.
display mac-address aging-time [ | { begin |
exclude | include } regular-expression ]
Available in any
view.