Binding VSIs to AC Interfaces

Context

Based on the type of link between a PE and a CE, a VSI is bound to an AC interface on the PE in one of the following modes:

Binding the VSI with the GE interface, 25GE interface, 40GE interface, 100GE interface, MultiGE interface, or XGE interface when the PE and the CE are connected through the Ethernet interface
Binding the VSI with the GE sub-interface, 25GE sub-interface, 40GE sub-interface, 100GE sub-interface, MultiGE sub-interface, or XGE sub-interface when the PE and the CE are connected through the Ethernet sub-interface
Binding the VSI with the VLANIF interface when the PE and the CE are connected through the VLANIF interface
Binding the VSI with the Eth-Trunk when the PE and the CE are connected through the Eth-Trunk interface
Binding the VSI with the Eth-Trunk sub-interface when the PE and the CE are connected through the Eth-Trunk sub-interface

The sub-interfaces can be Dot1q sub-interfaces, QinQ sub-interfaces, VLAN mapping sub-interfaces, or VLAN stacking sub-interfaces. For details on how to access the VPLS through a sub-interface, see Configuring a Dot1q Termination Sub-interface and Connecting It to an L2VPN and Configuring a QinQ Termination Sub-interface and Connecting It to an L2VPN in "VLAN Termination Configuration" in the S2720, S5700, and S6700 V200R019C10 Configuration Guide - Ethernet Switching.

When XGE, GE, 25GE, MultiGE, 40GE, 100GE, or Eth-Trunk interfaces are used as AC interfaces, the outer Tags carried in the packets sent from the AC to the PW are U Tags (inserted by user devices, which are meaningless to the SP) by default.

When VLANIF interfaces are used as AC interfaces, the outer Tags carried in the packets sent from the AC to the PW are P Tags (inserted by SP devices, which are used to differentiate user traffic) by default.

If the VLANIF interface configured based on a PVID is bound to a VSI, interfaces corresponding to this PVID cannot forward Layer 2 protocol BPDUs.
In the VPLS application, different CEs are transparently connected in the same LAN segment through VSIs, and the IP addresses of the CEs must be different.
When using GE, XGE, 25GE, MultiGE, 40GE, 100GE, or Eth-Trunk interfaces as AC interfaces, ensure that these interfaces do not contain any sub-interfaces.
When used on an AC-side interface, the qinq protocol command enables the system to identify incoming packets and Tag outgoing packets with the TPID. The TPID must use the default value 8100. Do not change the TPID.
If an interface is used as a VPLS AC-side interface and a multicast inbound interface at the same time, multicast data cannot be forwarded normally on this interface. (S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-HI, S6730S-H, and S6730-H do not have this restriction.)

Procedure

Bind a VSI to an Ethernet interface.
Do as follows on the PEs at both ends of a PW:
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The Ethernet interface view is displayed.
3. (Optional) Run undo portswitch
  The Layer 2 interface is configured as a Layer 3 interface.
4. Run l2 binding vsi vsi-name
  The VSI is bound to the Ethernet interface.
  - If the peer PE accepts only packets with VLAN tags, before binding the Ethernet interface to a VSI, run the mpls l2vpn default vlan command to configure the default VLAN for the primary interface.
  - If the peer PE accepts packets with one more VLAN tag, before binding the Ethernet interface to a VSI, run the mpls l2vpn vlan-stacking stack-vlan command to configure the stack VLAN for the primary interface.
Bind a VSI to an Ethernet sub-interface.
Do as follows on the PEs at both ends of a PW:
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The interface view is displayed.
3. Run port link-type { hybrid | trunk }
  The port link-type is set.
4. Run quit
  Return to the system view.
5. Run interface interface-type interface-number.subinterface-number
  The Ethernet sub-interface view is displayed.
6. Run one of the following commands to configure an Ethernet sub-interface based on site requirements.
  - Run dot1q termination vid low-pe-vid
    
    The single VLAN ID for dot1q encapsulation is configured on the sub-interface.
  - Run qinq termination pe-vid pe-vid ce-vid ce-vid1 [ to ce-vid2 ]
    
    The double VLAN IDs for QinQ encapsulation are configured on the sub-interface.
  - Run qinq mapping vid vlan-id1 [ to vlan-id2 ] map-vlan vid vlan-id3
    
    Single-tagged VLAN mapping is configured on the sub-interface.
  - Run qinq mapping pe-vid vlan-id1 ce-vid vlan-id2 [ to vlan-id3 ] map-vlan vid vlan-id4
    
    Double-tagged VLAN mapping is configured on the sub-interface.
  - Run qinq stacking vid vlan-id1 [ to vlan-id2 ] pe-vid vlan-id3
    
    VLAN stacking is configured on the sub-interface.
7. Run l2 binding vsi vsi-name
  The VSI is bound with the Ethernet sub-interface.
Bind a VSI to a VLANIF interface.
Do as follows on the PEs at both ends of a PW:
1. Run system-view
  The system view is displayed.
2. Run interface vlanif vlan-id
  The VLANIF interface view is displayed.
3. Run l2 binding vsi vsi-name
  The VLANIF interface is bound to the VSI.
  - The VLANIF interfaces of the VLANs before or after VLAN mapping or VLAN stacking cannot be bound to VSIs. Otherwise, the configured VSI and VLAN mapping or VLAN stacking do not take effect.
  - If a VLAN is configured with IGMP snooping or MLD snooping, the VLANIF interface of the VLAN cannot be used as an AC interface. To bind the VLANIF interface to a VSI, delete the IGMP snooping or MLD snooping configuration from the VLAN first.
Bind a VSI to an Eth-Trunk interface.
Do as follows on the PEs at both ends of a PW:
1. Run system-view
  The system view is displayed.
2. Run interface eth-trunk trunk-id
  An Eth-Trunk interface is created.
3. Run quit
  Return to the system view.
4. Run interface interface-type interface-number
  The view of the interface to be added into the Eth-Trunk is displayed.
  
  An Eth-Trunk member interface cannot be configured with a static MAC address.
  
  Member interfaces of a trunk cannot be Eth-Trunk interfaces.
5. Run eth-trunk trunk-id
  The interface is added into the Eth-Trunk.
  
  Before adding an interface into an Eth-Trunk, ensure the interface is not configured with any Layer 3 attributes such as IP address and any services.
  
  An Ethernet interface can join only one Eth-Trunk interface. To join another Eth-Trunk interface, the Ethernet interface must quit from the original one.
  
  Member interfaces of an Eth-Trunk interface must be of the same type. That is, GE interfaces, 25GE interfaces, MultiGE interfaces, 40GE interfaces, 100GE interfaces, and XGE interfaces cannot join an Eth-Trunk interface.
6. Run quit
  Return to the system view.
7. Run interface eth-trunk trunk-id
  The Eth-Trunk interface view is displayed.
8. (Optional) Run undo portswitch
  The Layer 2 interface is configured as a Layer 3 interface.
9. Run l2 binding vsi vsi-name
  The Eth-Trunk interface is bound with the VSI.
  - If the peer PE accepts only packets with VLAN tags, before binding the Ethernet interface to a VSI, run the mpls l2vpn default vlan command to configure the default VLAN for the primary interface.
  - If the peer PE accepts packets with one more VLAN tag, before binding the Ethernet interface to a VSI, run the mpls l2vpn vlan-stacking stack-vlan command to configure the stack VLAN for the primary interface.
Bind a VSI to an Eth-Trunk sub-interface.
Do as follows on the PEs at both ends of a PW:
1. Run system-view
  The system view is displayed.
2. Run interface eth-trunk trunk-id
  An Eth-Trunk interface is created.
3. Run quit
  The system view is displayed.
4. Run interface interface-type interface-number
  The view of the interface to be added into the Eth-Trunk is displayed.
  
  An Eth-Trunk member interface cannot be configured with a static MAC address.
  
  Member interfaces of a trunk cannot be Eth-Trunk interfaces.
5. Run eth-trunk trunk-id
  The interface is added into the Eth-Trunk.
  
  Before adding an interface into an Eth-Trunk, ensure the interface is not configured with any Layer 3 attributes such as IP address and any services.
  
  An Ethernet interface can join only one Eth-Trunk interface. To join another Eth-Trunk interface, the Ethernet interface must quit from the original one.
  
  Member interfaces of an Eth-Trunk interface must be of the same type. That is, GE interfaces, 25GE interfaces, MultiGE interfaces, 40GE interfaces, 100GE interfaces, and XGE interfaces cannot join an Eth-Trunk interface.
6. Run port link-type { hybrid | trunk }
  The port link-type is set.
7. Run quit
  Return to the system view.
8. Run interface eth-trunk trunk-id .subnumber
  The Eth-Trunk sub-interface view is displayed.
9. Run one of the following commands to configure an Ethernet sub-interface based on site requirements.
  - Run dot1q termination vid low-pe-vid
    
    The single VLAN ID for dot1q encapsulation on a sub-interface is configured.
  - Run qinq termination pe-vid pe-vid ce-vid ce-vid1 [ to ce-vid2 ]
    
    The Double VLAN IDs for QinQ encapsulation on a sub-interface is configured.
  - Run qinq mapping vid vlan-id1 [ to vlan-id2 ] map-vlan vid vlan-id3
    
    Single-tagged VLAN mapping is configured on the sub-interface.
  - Run qinq mapping pe-vid vlan-id1 ce-vid vlan-id2 [ to vlan-id3 ] map-vlan vid vlan-id4
    
    Double-tagged VLAN mapping is configured on the sub-interface.
  - Run qinq stacking vid vlan-id1 [ to vlan-id2 ] pe-vid vlan-id3
    
    VLAN stacking is configured on the sub-interface.
10. Run l2 binding vsi vsi-name
  The Eth-Trunk sub-interface is bound with the VSI.