Bfd Mad - HP 6125XLG Configuration Manual

If the domain IDs and the active IDs in the extended LACPDUs sent by all the member devices are
•
the same, the IRF fabric is integrated.
If the extended LACPDUs convey the same domain ID but different active IDs, a split has occurred.
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LACP MAD handles this situation as described in
Figure 5 LACP MAD application scenario
Master

BFD MAD

BFD MAD can work with or without intermediate devices.
scenario.
To use BFD MAD:
Set up dedicated BFD MAD link between each pair of IRF members or between each IRF member
•
and the intermediate device. Do not use the BFD MAD links for any other purpose.
Assign the ports connected by BFD MAD links to the same VLAN, create a VLAN interface for the
•
VLAN, and assign a MAD IP address to each member on the VLAN interface.
The MAD addresses identify the member devices and must belong to the same subnet.
With BFD MAD, the master tries to establish BFD sessions with other member devices by using its MAD
IP address as the source IP address:
If the IRF fabric is integrated, only the MAD IP address of the master is effective, and the master
•
cannot establish a BFD session with any other member. If you execute the display bfd session
command, the state of the BFD sessions is Down.
Customer
premise
network
Device
LACP-enabled dynamic
link aggregation
IRF
IRF link
Internet
Common traffic path
LACP MAD traffic path
"Collision handling."
LACP-enabled dynamic
link aggregation
Subordinate
Figure 6 shows a typical BFD MAD application
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