Configuring Protocol-based VLAN Assignment

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Context

IP subnet-based and protocol-based VLAN assignments are network layer-based VLAN assignments. They reduce manual VLAN configuration workload and allow users to easily join a VLAN, transfer from one VLAN to another, and exit from a VLAN. A switch that has protocol-based VLAN assignment enabled processes only untagged frames, and treats tagged frames in the same manner as interface-based VLAN assignment.

When receiving an untagged frame from an interface, the switch identifies the protocol profile of the frame and then determines the VLAN that the frame belongs to.

If protocol-based VLANs are configured on the interface and the protocol profile of the frame matches a protocol-based VLAN, the switch adds the VLAN tag to the frame.
If protocol-based VLANs are configured on the interface and the protocol profile of the frame matches no protocol-based VLAN, the switch adds the PVID of the interface to the frame.

Procedure

Run:
```
system-view
```
The system view is displayed.
Run:
```
vlan vlan-id
```
A VLAN is created and the VLAN view is displayed. If the specified VLAN has been created, the VLAN view is directly displayed.

The VLAN ID ranges from 1 to 4094. If VLANs need to be created in a batch, run the vlan batch { vlan-id1 [ to vlan-id2 ] } &<1-10> command to create VLANs in a batch, and then run the vlan vlan-id command to enter the view of a specified VLAN.

If a device is configured with multiple VLANs, configuring names for these VLANs is recommended:

Run the name vlan-name command in the VLAN view. After a VLAN name is configured, you can run the vlan vlan-name vlan-name command in the system view to enter the corresponding VLAN view.

The vlan configuration command completes vLAN configurations when the VLAN is not created.
Run:
```
protocol-vlan [ protocol-index ] { at | ipv4 | ipv6 | ipx { ethernetii | llc | raw | snap } | mode { ethernetii-etype etype-id1 | llc dsap dsap-id ssap ssap-id | snap-etype etype-id2 } }
```
Protocols are associated with VLANs and a protocol profile is specified.
- protocol-index specifies the index of a protocol profile.
  
  A protocol profile depends on protocol types and encapsulation formats, and a VLAN associated with a protocol can be defined in a protocol profile.
- When specifying the source and destination service access points, pay attention to the following points:
  - dsap-id and ssap-id cannot be both set to 0xaa.
  - dsap-id and ssap-id cannot be both set to 0xe0. 0xe0 indicates llc, encapsulation format of IPX packets.
  - dsap-id and ssap-id cannot be both set to 0xff. 0xff indicates raw, encapsulation format of IPX packets.
Configure attributes for the Ethernet interface.
1. Run:
```
interface interface-type interface-number
```
  The view of the interface that allows the protocol-based VLAN is displayed.
2. Run:
```
port link-type hybrid
```
  The interface is configured as the hybrid interface.
  
  On access and trunk interfaces, protocol-based VLAN assignment can be used only when the protocol-based VLAN is the same as the PVID. It is recommended that protocol-based VLAN assignment be configured on hybrid interfaces.
3. Run:
```
port hybrid untagged vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> | all }
```
  The hybrid interface is configured to allow the protocol-based VLAN.
4. Run:
```
protocol-vlan vlan vlan-id { all | protocol-index1 [ to protocol-index2 ] } [ priority priority ]
```
  The interface is associated with a protocol-based VLAN.
  - vlan-id must be the ID of a protocol-based VLAN.
  - priority specifies the 802.1p priority of a protocol-based VLAN. The value ranges from 0 to 7. A larger value indicates a higher priority. The default value is 0. After the 802.1p priority of a protocol-based VLAN is specified, the switch forwards high-priority frames first during network congestion.
Protocol-based VLAN assignment is invalid for packets with the VLAN ID of 0 on the X series cards.

Checking the Configuration

Run the display protocol-vlan vlan { all | vlan-id1 [ to vlan-id2 ] } command in any view to check the types and indexes of the protocols associated with VLANs.
Run the display protocol-vlan interface { all | interface-type interface-number } command in any view to check the protocol-based VLAN configuration on a specified interface or all interfaces.
Run the display vlan command in any view to check information about VLANs.

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.

Context

Procedure

Checking the Configuration

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