LevelOne FGL-2870 - Manual (Page 689)

VLAN Commands
4-323
4
Command Usage
• When creating a protocol-based VLAN, do not assign interfaces to the
protocol VLAN via any of the standard VLAN commands. If you assign
interfaces using any of the other VLAN commands (such as vlan on
page 4-299), the switch will admit traffic of any protocol type into the
associated VLAN.
• A maximum of 20 protocol VLAN groups can be defined on the switch.
• When a frame enters the switch that has protocol VLANs configured, it is
processed in the following manner:
- If the frame is tagged, it will be processed according to the standard rules
applied to tagged frames.
- If the frame is untagged and the protocol type matches, the frame is
forwarded to the appropriate VLAN.
- If the frame is untagged but the protocol type does not match, the frame is
forwarded to the default VLAN for the interface.
Example
The following example maps traffic matching the protocol type specified in protocol
group 2 to VLAN 2.
show protocol-vlan protocol-group
This command shows the frame and protocol type associated with protocol groups.
Syntax
show protocol-vlan protocol-group [group-id]
group-id - Group identifier for a protocol group. (Range: 1-2147483647)
Default Setting
All protocol groups are displayed.
Command Mode
Privileged Exec
Example
This shows protocol group 2 configured for IP over RFC 1042:
Console(config)#protocol-vlan protocol-group 2 vlan 2
Console(config)#
Console#show protocol-vlan protocol-group
ProtocolGroup ID Frame Type Protocol Type
------------------ ------------- ---------------
2 RFC 1042 08 00
Console#