Symptoms
Over extended periods of booting and rebooting a VIPRION system containing B4400N blades, a switch port connected to the HSB might fail to initialize properly. In some cases, logs indicate an occurrence of the problem in the following form: hgm_fcs_errs[higig mac #] exceeds 1000.
Impact
When the problem is manifest, the HSB receives FCS errors at a high-frequency and does not receive any valid traffic from the port switch. The B4400N blade might be unable to go active and join the cluster.
Conditions
This happens under very rare conditions on B4400N blades; for example, after approximately 8-12 hours of continuous rebooting.
Workaround
To recover, reboot the system once.
