Configuring MPLS L2VPN QoS (Except CE6870EI/CE6875EI)

Procedure

1. Run system-view

   The system view is displayed.

2. Run diffserv domain ds-domain-name

   A DiffServ domain is created and the DiffServ domain view is displayed.

   The default domain defines default mappings from packet priorities to PHBs. You can modify the mapping defined in the default domain but cannot delete the default domain. In addition to the default domain, a maximum of seven DiffServ domains can be created.

3. Configure priority mapping.

   Choose either of the following tasks:

   • DiffServ mode: uniform

     1. Run exp-outbound service-class color map exp-value

        The PHBs and colors are mapped to the EXP priorities for outgoing MPLS packets on the ingress node.

        For details about the default mapping from PHBs and colors to the EXP priorities for outgoing packets in a DiffServ domain, see exp-outbound.

     2. Run exp-inbound exp-value phb service-class color

        The EXP priorities are mapped to PHBs and colors for incoming MPLS packets on the egress node.

        For details about the default mapping from the EXP priorities to PHBs and colors for incoming packets in a DiffServ domain, see exp-inbound.

     3. Run quit

        Return to the system view.

   • DiffServ mode: pipe

     1. Run exp-inbound exp-value phb service-class color

        The EXP priorities are mapped to PHBs and colors for incoming MPLS packets on the egress node.

        For details about the default mapping from the EXP priorities to PHBs and colors for incoming packets in a DiffServ domain, see exp-inbound.

        If you want to retain the 802.1p priorities of original packets and make them effective after packets leave the MPLS network, run the qos phb marking 8021p disable command on the outbound interface of the egress node to disable mapping from PHBs to the 8021.p priorities.

     2. Run quit

        Return to the system view.

   • DiffServ mode: short pipe

     1. Run exp-outbound service-class color map exp-value

        The PHBs and colors are mapped to the EXP priorities for outgoing MPLS packets on the ingress node.

        For details about the default mapping from PHBs and colors to the EXP priorities for outgoing packets in a DiffServ domain, see exp-outbound.

        If exp-value is specified, skip this step.

        In the inbound direction of the interface on the egress node, the system sends packets to the queue whose internal priority is 0 and sets the color to green by default.

     2. Run quit

        Return to the system view.

4. Configure an MPLS DiffServ mode.
   1. Run vsi vsi-name bd-mode

      The VSI view is displayed.

   2. Run diffserv-mode { pipe exp exp-value | short-pipe [ exp exp-value ] | uniform } [ domain ds-name ]

      An MPLS DiffServ mode is configured.

      • If exp-value is specified, the EXP priority in an MPLS private network label will be changed to this value.

      • When you set the DiffServ mode to short pipe, the ingress node performs priority mapping based on the 802.1p priorities of original packets if exp exp-value is not specified for packets to be transmitted over the LSP. If the packets do not carry VLAN tags, the 802.1p priority is fixed as 0.

5. Run commit

   The configuration is committed.