DGS-3024 Layer 2 Switch CLI Reference Manual
To add multicast MAC forwarding:
DGS-3024:4#config multicast_fdb default 01-00-5E-00-00-00 add 1
Command: config multicast_fdb default 01-00-5E-00-00-00 add 1
Success.
DGS-3024:4#
config fdb aging_time
Purpose
Used to set the aging time of the forwarding database.
Syntax
config fdb aging_time minutes <int 0-14400>
Description
The aging time affects the learning process of the Switch. Dynamic
forwarding table entries, which are made up of the source MAC
addresses and their associated port numbers, are deleted from the
table if they are not accessed within the aging time. The aging time
can be from 0 to 14400 minutes with a default value of 5 minutes. A
very long aging time can result in dynamic forwarding table entries
that are out-of-date or no longer exist. This may cause incorrect
packet forwarding decisions by the Switch. If the aging time is too
short however, many entries may be aged out too soon. This will
result in a high percentage of received packets whose source
addresses cannot be found in the forwarding table, in which case the
Switch will broadcast the packet to all ports, negating many of the
benefits of having a Switch.
Parameters
<int 0-14400>
−
The aging time for the MAC address forwarding
database value, in minutes.
Restrictions Only
administrator-level users can issue this command.
Example usage:
To set the fdb aging time:
DGS-3024:4#config fdb aging_time 300
Command: config fdb aging_time 300
Success.
DGS-3024:4#
delete fdb
Purpose
Used to delete an entry to the Switch’s forwarding database.
Syntax
delete fdb <vlan_name 32> <macaddr>
Description
This command is used to delete a previous entry to the Switch’s
MAC address forwarding database.
Parameters
<vlan_name 32>
−
The name of the VLAN on which the MAC
dd
id
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