Bfd Mad - HP FlexFabric 12900 Series Configuration Manual

Figure 6 LACP MAD scenario
Intermediate device
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.
NOTE:
The MAD IP addresses identify the member devices and must belong to the same subnet.
With BFD MAD, the master tries to establish BFD sessions with the 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
LACP-enabled dynamic
IRF
IRF link
Internet
Common traffic path
LACP MAD traffic path
link aggregation
LACP-enabled dynamic
link aggregation
Subordinate
Figure 7 shows a typical BFD MAD application
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