What does this error mean in ACI 4.2(1l)?

[m1xed0s]

I did two snapshots for a particular tenant and all Fabric respectively. When I try to rollback either snapshot, it got this "warning" message...

But what does it really trying to tell me...?? The configuration was not rolled back either...

[Gaurav Gambhir · Accepted solution]

probably your IP SLA monitoring policy to TCP, however TCP port suppose to be non-zero. you can also set the IP SLA monitor policy to ICMP to get around this error.

[m1xed0s]

I will check the default policy. I didn’t create one myself...

[m1xed0s]

The default IP SLA policy under common tenant was the cause...It was configured as below. But why it was set to TCP with destination port as 0 by default then? I did not modified it but I did upgrade the Fabric from really old version to version 4.2 in steps though? So is it a bug then?

[Gaurav Gambhir]

at least in couple of fabric in two different 4.2 versions I see default is ICMP.