Symptoms
In addition to HiGig Link instability, FCS errors can be seen on internal switch and HSB Higig link. This is likely some PHY-related issues and can cause instability in communication links.
One symptom associated with this might be that a blade cannot become active and join the cluster.
Impact
Link unstable, frame loss.
TMOS MPI and CDP packet loss and internal blade communication issues.
HSB lockup and accumulated FCS errors observed from stats and log.
Conditions
FCS errors reported in tmm/hsbe2_internal_lbb_hgm. Traffic failure observed on some VIPs or self IPs.
Workaround
A switch port reset might be used to recover this failure. Note, however: that procedure might cause potential HSB lockups.
Fix Information
FCS errors and link instability no longer occur.
