Binding an MA to a VLL

Binding an MA to a VLL is a prerequisite for configuring single-ended frame loss measurement, dual-ended frame loss measurement, one-way frame delay measurement, two-way frame delay measurement.

Context

VLL-based performance monitoring is L2VC-specific. Therefore, when deploying performance monitoring defined in Y.1731 on a VLL, bind an MA to an L2VC, and then collect performance statistics about the MA. Then, performance statistics about a specified PW or AC will be available.

To collect performance statistics about a PW, do as follows on the PEs at both ends of a VLL.
To collect performance statistics about an AC between a PE and a CE, do as follows on the PE.

Procedure

Run system-view
The system view is displayed.
Run cfm md md-name
The MD view is displayed.
Run ma ma-name
The MA view is displayed.

Associate the MA with a service.

LDP VLL scenarios

Run map mpls l2vc[ peer-address ] l2vc-id { raw | tagged }

The MA is bound to a specified L2VC.
BGP VLL scenarios

Run mapmpls l2vpnl2vpn-namecece-idce-offsetce-offset-id

The MA is bound to a specified PW.

MA cannot be associated with backup VC in 802.1ag.

The interface of the raw type and the interface of the tagged type process packets in different manners, as shown in Table 1 and Table 2.

**Table 1** Packet processing on an inbound interface
Inbound Interface Type	Raw Encapsulation (Ethernet Encapsulation)	Tagged Encapsulation (VLAN Encapsulation)
Dot1q sub-interface	Removes one tag.	Keeps the tag unchanged.
Dot1q termination sub-interface	Removes one tag.	Keeps the tag unchanged.

**Table 2** Packet processing on an outbound interface
Outbound Interface Type	Raw Encapsulation (Ethernet Encapsulation)	Tagged Encapsulation (VLAN Encapsulation)
Dot1q sub-interface	Adds one tag.	Replaces the VLAN ID in the tag contained in a packet with the local VLAN ID.
Dot1q termination sub-interface	Adds one tag.	Replaces the VLAN ID in the tag contained in a packet with the local VLAN ID.

Run commit
The configuration is committed.