Lacp Mad - H3C S5830V2 Configuration Manual

1. Sets the IRF fabric that has the lowest numbered master to the Detect state.
2. Sets all other fabrics to the Recovery state.
3. Takes 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
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the failed IRF link.
If the active IRF fabric fails before the failure is recovered, enable the inactive IRF fabric to take over
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the active IRF fabric. Then, recover the MAD failure.

LACP MAD

As shown in
Every IRF member has a link with an intermediate device.
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All the links form a dynamic link aggregation group.
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The intermediate device must be a device that supports extended LACP for MAD.
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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 active IDs in the extended LACPDUs sent by all the member devices are the
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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 has the following requirements:
"Collision handling."
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