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LACP MAD failure
Symptom
LACP MAD fails to detect an IRF split event. Two IRF fabrics are operating with the same Layer 3
settings, including the same IP address.
Troubleshooting flowchart
Figure 22 Troubleshooting LACP MAD failure
Solution
To resolve the issue:
1.
Verify that the intermediate device supports extended LACPDUs for MAD.
No
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Yes
No
Replace the device or use
BFD MAD for detection
Intermediate device
supports extended LACPDUs
for MAD?
Resolved?
Each member has a
link to the intermediate device?
Correct the connections
Resolved?
Dynamic aggregation
mode used?
Enable dynamic aggregation
mode for the aggregate
interface
Resolved?
Aggregate interface and
its member ports all up?
Bring up the aggregate
interface and all its member
ports
Resolved?
IRF domain ID unique?
Assign a unique domain ID to
the IRF fabric
Resolved?
Member ports in the link
aggregation always up?
Identify port-down event
cause and remove the issue
Resolved?
End
Contact the support
LACP MAD failure
