Configuring Transparent Transmission of Link-Layer-Protocol Packets on VPWS/EVPL Networks

Procedure

1. Run system-view

   The system view is displayed.

2. Run interface interface-type interface-number.sub-number

   The sub-interface view is displayed.

3. Run vlan-type dot1q vlan-id

   The sub-interface is associated with a VLAN, and a VLAN encapsulation mode is configured for the sub-interface.

4. Complete the VLL/CCC VPWS or EVPL configuration as needed.
   • For details about how to configure a VLL VPWS, see Configuring LDP VPWS, Configuring BGP VPWS, or Configuring SVC VPWS.
   • For details about how to configure a CCC VPWS, see Configuring CCC VPWS.
   • For details about how to configure an EVPL, see Configuring EVPN VPWS over MPLS Functions.

5. Run the corresponding command according to the type and protocol status of the Layer 2 protocol packets to be transparently transmitted.

   • For LLDPDUs, perform one of following operations depending on whether LLDP is enabled:

     • If LLDP is disabled globally or on the main interface of the sub-interface mentioned in step 2, run the link-protocol transport lldp [ untag ] command to configure the sub-interface to transparently transmit untagged LLDPDUs.
       

       If LLDP is disabled, tagged LLDPDUs can be transparently transmitted regardless of whether this command is run.

     • If LLDP is enabled globally and also on the main interface of the sub-interface mentioned in step 2, run the link-protocol transport tagged lldp command to configure the sub-interface to transparently transmit tagged LLDPDUs.
       

       If LLDP is enabled, untagged LLDPDUs cannot be transparently transmitted regardless of whether this command is run.

   • For LACPDUs, run the mode lacp-static command to configure the involved Eth-Trunk interface to work in static LACP mode. Then, depending on whether the LACPDUs carry VLAN tags, run one of the following commands to configure the Eth-Trunk sub-interface to transparently transmit LACPDUs:

     • If the LACPDUs do not carry VLAN tags, run the link-protocol transport lacp [ untag ] command.
     • If the LACPDUs carry VLAN tags, run the link-protocol transport tagged lacp command.
     

     Only Eth-Trunk sub-interfaces can transparently transmit LACPDUs.

   • For BPDUs, perform the following operations:

     1. Run bpdu-tunnel enable

        BPDU tunneling is enabled on the main interface.

     2. Run stp disable

        STP/RSTP/MSTP is disabled in the system view or interface view.

     3. Run link-protocol transport bpdu [ untag ]

        The sub-interface is enabled to transparently transmit untagged BPDUs.

     

     Only untagged BPDUs can be transparently transmitted.

   • If UDLD PDUs do not carry VLAN tags, run the link-protocol transport udld [ untag ] command.

   • If CDPDUs do not carry VLAN tags, run the link-protocol transport cdp [ untag ] command.

6. Run commit

   The configuration is committed.