C
HAPTER
36
| VLAN Commands
Configuring Protocol-based VLANs
– 1155 –
EXAMPLE
The following creates protocol group 1, and specifies Ethernet frames with
IP and ARP protocol types:
Console(config)#protocol-vlan protocol-group 1 add frame-type ethernet
protocol-type ip
Console(config)#protocol-vlan protocol-group 1 add frame-type ethernet
protocol-type arp
Console(config)#
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 priority priority
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: 1-4094)
priority - The priority assigned to untagged ingress traffic.
(Range: 0-7, where 7 is the highest priority)
DEFAULT SETTING
No protocol groups are mapped for any interface.
COMMAND MODE
Interface Configuration (Ethernet, Port Channel)
COMMAND USAGE
â—† 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 the vlan command), these interfaces will admit
traffic of any protocol type into the associated VLAN.
â—† When a frame enters a port that has been assigned to a protocol VLAN,
it is processed in the following manner:
â–
If the frame is tagged, it will be processed according to the standard
rules applied to tagged frames.
â–
If the frame is untagged and the protocol type matches, the frame
is forwarded to the appropriate VLAN.
â–
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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