Hi folks.
I need some help interpreting a message I got in the log of an ERS 8600 Release 7.2.17.
CPU5 [10/30/17 14:57:35] COP-SW INFO Slot 3: Recovering the port 12 which was locked due to backpressure stuckSome background.
Slot 3 is an 8812XL - 12-port SFP+
Port 12 is an SLT with an ERS 5632. The 5632 stopped working after a power failure (affecting all switches). After checking the log on one of the 8600's in the cluster, I saw the message above being repeated. Disconnecting the uplink on the 5632 to the 8600 with the errors restored connectivity.
This is the first time I've ever seen this error. It sounds more like a problem for an auto mechanic.

No other ports on the 8812XL have the error. They are also SLTs (for the most part).
KHI stats don't show any issues. Right lane looks OK.
Do you guys have any idea what that message could mean?
Thanks.