Bfd Mad - HP 5130 EI series Configuration Manual

Figure 5 LACP MAD application scenario
Master

BFD MAD

BFD MAD can work with or without an intermediate device.
application 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 purposes.
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 attempts 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 takes effect. 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.
When the IRF fabric splits, the IP addresses of the masters in the split IRF fabrics take effect. The
•
masters can establish a BFD session. If you execute the display bfd session command, the state of
the BFD session between the two devices is Up.
Customer
premise
network
Device
LACP-enabled dynamic
link aggregation
IRF
IRF link
Internet
Common traffic path
LACP MAD traffic path
LACP-enabled dynamic
link aggregation
Subordinate
Figure 6
9
shows a typical BFD MAD