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Configuring VLANs 693
Configuring a Protocol-Based VLAN
Beginning in Privileged EXEC mode, use the following commands to create
and name a protocol group, and associate VLANs with the protocol group.
When you create a protocol group, the switch automatically assigns it a
unique group ID number. The group ID is used for both configuration and
script generation to identify the group in subsequent commands.
A protocol group may have more than one interface associated with it, but
each interface and protocol combination can be associated with one group
only. If adding an interface to a group causes any conflicts with protocols
currently associated with the group, adding the interface(s) to the group fails
and no interfaces are added to the group. Ensure that the referenced VLAN is
created prior to the creation of the protocol-based group except when GVRP
is expected to create the VLAN.
Command Purpose
configure Enter global configuration mode.
vlan protocol group
name
Create a new protocol group.
exit Exit to Privileged EXEC mode.
show port protocol all Obtain the group ID for the newly configured group.
configure Enter global configuration mode.
vlan protocol group add
protocol
groupid
ethertype
value
Add any EtherType protocol to the protocol-based VLAN
groups identified by
groupid
. A group may have more than
one protocol associated with it. Each interface and
protocol combination can be associated with one group
only. If adding a protocol to a group causes any conflicts
with interfaces currently associated with the group, this
command fails and the protocol is not added to the group.
•
groupid
— The protocol-based VLAN group ID.
•
protocol
— The protocol you want to add. The ethertype
can be any valid number in the range 0x0600-0xffff.