C
ONFIGURING
P
ROTOCOL
-
BASED
VLAN
S
30-21
protocol-vlan protocol-group (Configuring Interfaces)
This command maps a protocol group to a VLAN for the current
interface. Use the no form to remove the protocol mapping for this
interface.
Syntax
protocol-vlan protocol-group group-id vlan vlan-id
no protocol-vlan protocol-group group-id vlan
• group-id - Group identifier of this protocol group.
(Range: 1-2147483647)
• vlan-id - VLAN to which matching protocol traffic is forwarded.
(Range: 1-4093)
Default Setting
No protocol groups are mapped for any interface.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• When creating a protocol-based VLAN, only assign interfaces via this
command. If you assign interfaces using any of the other VLAN
commands (such as vlan on page 30-8), these interfaces will admit
traffic of any protocol type into the associated VLAN.
• When a frame enters a port that has been assigned to a protocol
VLAN, 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 this interface.
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