HPE FlexFabric 5700 Series Configuration Manual page 13

Figure 5 LACP MAD scenario
Intermediate device
Master
BFD MAD
You can use common or management Ethernet ports for BFD MAD links.
•
If management Ethernet ports are used, BFD MAD must work with an intermediate device.
Make sure the following requirements are met:
Each IRF member device has a BFD MAD link to the intermediate device.

Each member device is assigned a MAD IP address on the master's management Ethernet

port.
•
If common Ethernet ports are used, BFD MAD has the following requirements:
Each member device has a BFD MAD link to an intermediate device, or all member devices

have a BFD MAD link to each other.
As a best practice, use an intermediate device to connect IRF member devices if the IRF
fabric has more than two member devices. A full mesh of IRF members might cause
broadcast loops.
Each member device is assigned a MAD IP address on a VLAN interface.

The BFD MAD links must be dedicated. Do not use BFD MAD links for any other purposes.
NOTE:
• The MAD addresses identify the member devices and must belong to the same subnet.
• Of all management Ethernet ports on an IRF fabric, only the master's management Ethernet port
is accessible.
Customer
premise
network
LACP-enabled dynamic
link aggregation
IRF fabric
IRF link
Internet
Common traffic path
LACP MAD traffic path
LACP-enabled dynamic
link aggregation
Subordinate
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