QinQ Configuration
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show interface vlan-stack
Section titled “show interface vlan-stack”[Command]
show interface vlan-stack
[Purpose]
View the VLAN stack function configuration of the interface
[View]
System view
[Use Cases]
sonic# show interface vlan-stack Port Original VLAN Customer VLAN Service VLAN Remark TC Uplink Port--------- --------------- --------------- -------------- ----------- -------------Ethernet1 0 1 100 N/A Ethernet7Ethernet4 2 N/A 100 N/A N/A
Total entries: 2show interface qinq protocol
Section titled “show interface qinq protocol”[Command]
show interface qinq protocol [ interface_name ]
[Purpose]
View the qinq protocol configuration of the interface
[View]
System view
[Use Cases]
sonic# show interface qinq protocol 1Name Protocol--------- ----------Ethernet1 0x88A8qinq protocol
Section titled “qinq protocol”[Command]
qinq protocol value
no qinq protocol
[Purpose]
Configure the TPID
[Parameter]
| Parameter | Description |
|---|---|
| value | 4-bit hexadecimal integer form, default value is: 0x8100 |
[View]
Interface view
[Usage Scenario]
- Inbound Direction: In the inbound direction, the “qinq protocol” command is used for identifying VLAN information in received packets. If an interface receives QinQ-tagged packets and you don’t want to modify the VLAN information in the packet, the configuration should match the TPID (Tag Protocol Identifier) of the incoming packet. This means the TPID configuration should be consistent with the TPID used in the received packets.
- Outbound Direction: In the outbound direction, the “qinq protocol” command is used to modify the TPID value in outgoing packets.
[Use Cases]
sonic(config)# interface ethernet 1sonic(config-if-1)# qinq protocol 0x88a8qinq enable
Section titled “qinq enable”[Command]
qinq enable
[Purpose]
Enable basic QinQ functionality on the interface
[View]
Interface view
[Usage Scenario]
When the port enable switch is activated, all traffic entering the device from this port will be tagged with an additional layer corresponding to the Port VLAN ID (PVID). If the packet does not have a VLAN tag, it will be encapsulated with a layer corresponding to the PVID VLAN. If the packet already carries a VLAN tag, an additional layer corresponding to the PVID VLAN will be added.
[Use Cases]
sonic(config)# interface ethernet 1sonic(config-if-1)# qinq enablevlan-stack {tagged|untagged}
Section titled “vlan-stack {tagged|untagged}”[Command]
vlan-stack {tagged|untagged} vlan_id stack_id [remark-dot1p dot1p_value ] [remark-tc tc_value ]
no vlan-stack untagged
no vlan-stack tagged
[Purpose]
Configure the VLAN stack function of the interface
[Parameter]
| Parameter | Description |
|---|---|
| tagged | Interface received messages with VLAN tag need to be overlaid as a two-layer VLAN |
| untagged | Interface receives messages without VLAN tags that require stacking two layer VLANs |
| vlan_id | VLAN ID of interface received with VLAN tag packets or inner VLAN ID after QinQ encapsulation of packets without VLAN tag |
| stack_id | Specify the outer VLAN tag after stacking |
| dot1p_value | Modify the 802.1p priority of the outer VLAN tag |
| tc_value | Modify the priority of packets for local processing |
[View]
Interface view
[Usage Scenario]
VLAN Stacking is a Layer 2 technology that allows the encapsulation of user packets with an outer VLAN tag based on the user’s VLAN ID. This helps differentiate between different users’ packets.
[Use Cases]
sonic(config)# interface ethernet 1sonic(config-if-1)# qinq protocol 0x88a8sonic(config-if-1)# switchport access vlan 101sonic(config-if-1)# vlan-stack tagged 100 101 remark-dot1p 4 remark-tc 4