User's Manual

79-7
Figure 83-7: LACP MAD detection
LACP MAD detection is achieved through the extended LACP protocol packets content. It defines a new TLV
(Type Length Value) in the extended field of LACP protocol packets and this TLV is used for the ActiveID of
the interaction VSF. For VSF system, ActiveID value is unique, and it is expressed by the member number of
the master device in VSF. After enabling LACP MAD detection, the member device interact the ActiveID
information with other member devices through the LACP protocol packets.
When VSF is running normally, the ActiveID values of the LACP protocol packets sent by all member devices
are the same, there is no Active conflict.
When the VSF is split into two vsf, the ActiveID values of the LACP protocol packets sent by different VSF
member devices are the different and multiple Active conflict will be detected.
79.1.6 BFD MAD
The topology of Bfd mad detection is simpler then lacp. But, one vlan is selected for bfd mad detection once,
this vlan and the ports in it will be as the specific vlan and ports of bfd mad and they cannot be configured
other functions.