DES-3226L Layer 2
Fast Ethernet Switch User’s Guide
Forwarding
The Switch supports MAC forwarding.
MAC Forwarding
The MAC Forwarding feature is divided between
MAC Address Aging Time
and
Configure
The Broadcast Storm Control Mode
.
MAC Address Aging Time
Figure 6-5. MAC Address Aging Time window
The
MAC Address Aging Time
field specifies the length of time a learned MAC Address
will remain in the forwarding table without being accessed (that is, how long a learned MAC
Address is allowed to remain idle). The Aging Time can be set to any value between 10
and
765 seconds.
Note
: A very long Aging Time can result with the out-of-date Dynamic
Entries that may cause incorrect packet filtering/forwarding decisions. A
very short aging time may cause entries to be aged out too soon, resulting
in a high percentage of received packets whose source addresses cannot
be found in the address table, in which case the Switch will broadcast the
packet to all ports, negating many of the benefits of having a switch.
Configure The Broadcast Storm Control Mode
This field can be toggled between
Enable
and
Disable
using the drop-down menu. This
enables or disables, globally, the Switch’s reaction to Broadcast storms, triggered at the
threshold set in the last field.
Figure 6-6. Configure The Broadcast Storm Control Mode window
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