Wednesday, 9 July 2025

ACI Errors

1. Error 400 - the messaging layer was unable to deliver the stimulus (no replica is available)

Resolution - This error occurs when there is issue with the APIC inter communication. please check if the APIC cluster is healthy.


2. Error: 400 - Cannot configure if dFromPort = 0 and dToPort != 0 Dn0=uni/tn-T1/flt-Filter-tcp80/e-Entry_TCP80

Resolution - Check the Destination From and To field in the ACI filters. If you want to filter some specific port like port http then select http on both FROM and TO field. 

You cannot have unspecified in  FROM and http in TO field.


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