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Example
The following example shows how to display information for VLAN 1.
Configuring Protocol-based VLANs
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.
Console#show vlan id 1
VLAN Type Name Status Ports/Channel groups
---- ------- --------------- --------- ----------------------------------
1 Static DefaultVlan Active Eth1/ 1 Eth1/ 2 Eth1/ 3 Eth1/ 4 Eth1/5
Eth1/ 6 Eth1/ 7 Eth1/ 8 Eth1/ 9 Eth1/10
Eth1/11 Eth1/12
Console#
Table 4-56 Protocol-based VLAN Commands
Command Function Mode Page
protocol-vlan
protocol-group
Create a protocol group, specifying the
supported protocols
GC 4-243
protocol-vlan
protocol-group
Maps a protocol group to a VLAN IC 4-244
show protocol-vlan
protocol-group
Shows the configuration of protocol
groups
PE 4-245
show interfaces
protocol-vlan
protocol-group
Shows the interfaces mapped to a
protocol group and the corresponding
VLAN
PE 4-246