H3C Technologies H3C SecPath F5020 - Manual (Page 22)

13
Figure 8 BFD MAD scenario
ARP MAD
ARP MAD is available only for distributed devices.
ARP MAD detects multi-active collisions by using extended ARP packets that convey the IRF domain ID
and the active ID.
You can set up ARP MAD links between neighbor IRF member devices, or between each IRF member
device and an intermediate device (see Figure 9 ). If an intermediate device is used, you must also run the
spanning tree feature between the IRF fabric and the intermediate device.
Device
Master Subordinate
IRF
Internet
Customer
premise
network
IRF link
Link aggregation
BFD MAD link
VLAN 2
192.168.1.2/24 VLAN 2
192.168.1.3/24