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Chapter 36: VLAN Commands
Configuring Protocol-based VLANs
show vlan-
translation
C
P
ONFIGURING
ROTOCOL
Console(config-if)#switchport allowed vlan add 100 tagged
Console(config-if)#interface ethernet 1/1
Console(config-if)#switchport vlan-translation 10 100
Console(config-if)#end
Console#show vlan-translation
Interface Old VID New VID
--------- ------- -------
Eth 1/ 1
10
100
Console#
This command displays the configuration settings for VLAN translation.
S
YNTAX
show vlan-translation [interface interface]
interface
ethernet unit/port
unit - Stack unit. (Range: 1)
port - Port number. (Range: 1-52)
C
M
OMMAND
ODE
Privileged Exec
E
XAMPLE
Console#show vlan-translation
Interface Old VID New VID
--------- ------- -------
Eth 1/ 1
10
100
Console#
-
VLAN
BASED
S
The network devices required to support multiple protocols cannot be
easily grouped into a common VLAN. This may require non-standard
devices to pass traffic between different VLANs in order to encompass all
the devices participating in a specific protocol. This kind of configuration
deprives users of the basic benefits of VLANs, including security and easy
accessibility.
To avoid these problems, you can configure this switch with protocol-based
VLANs that divide the physical network into logical VLAN groups for each
required protocol. When a frame is received at a port, its VLAN
membership can then be determined based on the protocol type in use by
the inbound packets.
– 1106 –
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