3 Configuring the Switch

Mapping Protocols to VLANs

Map a protocol group to a VLAN for each interface that will participate in the group.

Command Usage

•When creating a protocol-based VLAN, only assign interfaces using this configuration screen. If you assign interfaces using any of the other VLAN menus such as the VLAN Static Table (page 3-138)or VLAN Static Membership by Port menu (page 3-140),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.

Command Attributes

•Interface – Port (1-8) or trunk identifier.

•Protocol Group ID – Group identifier of this protocol group. (Range: 1-2147483647)

•VLAN ID – VLAN to which matching protocol traffic is forwarded. (Range: 1-4094)

Web – Click VLAN, Protocol VLAN, Port Configuration. Select a a port or trunk, enter a protocol group ID, the corresponding VLAN ID, and click Apply.

Figure 3-84 Protocol VLAN Port Configuration

CLI – The following maps the traffic entering Port 1 which matches the protocol type specified in protocol group 1 to VLAN 3.

Console(config)#interface ethernet 1/1

 

Console(config-if)#protocol-vlan protocol-group 1 vlan 3

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Console(config-if)#

 

 

 

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