MNS-BB Software User Guide
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If the frame's destination address matches an address that was learned on a port other than the receive
port, it is forwarded to that port.
If a frame with an unknown, multicast, or broadcast destination address is received, then it is flooded
(that is, forwarded to all ports on the VLAN that is associated with the frame, except the port on
which it was received).
If the frame's destination address matches a MAC address of one of the bridge's ports, it is further
processed, not forwarded immediately. This type of frame is a management/configuration frame, such
as a SNMP get/set PDU, Administration Console Telnet packet, or a Web Management Interface http
packet.
Tag Status Rules
After the VLAN and the transmit ports are determined for the frame, the tag status rules determine
whether the frame is transmitted with an IEEE 802.1Q tag:
• For each port on which a frame is to be transmitted, if that port is tagged for the VLAN that is
associated with the frame, transmit the frame as a tagged frame.
• For each port on which a frame is to be transmitted, if that port is not tagged for the VLAN that is
associated with the frame, transmit the frame as an untagged frame
16.4 CLI
LE2425A and LEV2525A Switches support one type of VLAN at a time. The user has to set the
VLAN type before configuration.
LE2425A# set vlan type=<port|tag|none>
For Tag VLAN,
LE2425A# set vlan type=tag
Than, go to Vlan configuration mode by typing,
LE2425A# vlan type=tag
To add a TAG based VLAN we use the following command:
LE2425A(tag-vlan)## add id=<vlan Id> [name=<vlan name>] port=<number|list|range>
where,
id is a valid VLAN ID. Its value has to be between 1 and 4095.
name is an optional field which is used to name a VLAN.
port is a valid range/list of ports or a single port which is to be added to the VLAN.
Note: When a new TAG VLAN is added, the VLAN’s state is set to ‘pending’, to activate the VLAN,
use the start command described below.
To delete a TAG VLAN use the following command:
LE2425A(tag-vlan)## delete vlan=<name|number|list|range>
where,
vlan is the name or VLAN ID which is to be deleted.
This field also accepts range of VLAN ID values.
Note: An active VLAN cannot be deleted. The VLAN has to be stopped before it can be deleted.
Only VLAN’s in pending state can be deleted.
To edit/change the VLAN settings use the following command:
LE2425A(tag-vlan)##editid=<vlanId>[name=<vlanname>] port=<number|list|range>
where,
id is an exisiting VLAN ID.
name is an optional field which is the name of the VLAN.
port is valid range/list of ports or a single port.
Note: An active VLAN cannot be edited. The VLAN has to be stopped before it can be edited. Only
VLAN’s in pending state can be edited.
To start/activate a VLAN use the following command:
LE2425A(tag-vlan)## start vlan=<all|name|number|list|range>
where,
vlan is the name or VLAN ID which is to be started/activated.
This field also accepts range of VLAN ID values. To activate all the ‘pending’ VLAN’s, use
‘all’ instead of VLAN ID’s or VLAN name.
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