HPE FlexNetwork HSR6800 Configuration Manual page 14

Figure 8 ARP MAD application scenario
Device
Master
Each IRF member compares the domain ID and the active ID in incoming extended gratuitous ARP
packets with its domain ID and active ID:
•
If the domain IDs are different, the extended gratuitous ARP packet is from a different IRF fabric.
The device does not continue to process the packet with the MAD mechanism.
•
If the domain IDs are the same, the device compares the active IDs:
If the active IDs are different, the IRF fabric has split.
If the active IDs are the same, the IRF fabric is integrated.
Customer
premises
network
To avoid loops, all devices
in the domain must run the
spanning tree feature.
IRF
IRF link
Internet
Common traffic path
Extended gratuitous ARP traffic path
10
STP Domain
Subordinate