Lacp Mad - HP FlexFabric 12500 Series Configuration Manual

Physical IRF ports
Ports you have specified with the mad exclude interface command
In contrast, BFD MAD, ARP MAD, and ND MAD do not compare the number of members in fabrics.
These MAD mechanisms handle a multi-active collision in the following process:
6. Allow the IRF fabric that has the lowest numbered master to forward traffic.
7. Set all other fabrics to the Recovery state.
8. Take the same action on the network ports in Recovery-state fabrics as LACP MAD does.
Failure recovery
To merge two split IRF fabrics, first repair the failed IRF link and remove the IRF link failure.
If the IRF fabric in Recovery state fails before the failure is recovered, repair the failed IRF fabric and the
failed IRF link.
If the active IRF fabric fails before the failure is recovered, enable the inactive IRF fabric to take over the
active IRF fabric. Then, recover the MAD failure.

LACP MAD

LACP MAD requires that every IRF member have a link with an intermediate device, and all these links
form a dynamic link aggregation group, as shown in
be an HP device that supports extended LACP for MAD.
The IRF member devices send extended LACPDUs with TLVs that convey the domain ID and the active ID
of the IRF fabric. The intermediate device transparently forwards the extended LACPDUs received from
one member device to all the other member devices:
• 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.
•
LACP MAD handles this situation as described in
Figure 7. In addition, the intermediate device must
"Collision handling."
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