When digging down problems within a brocade SAN these are some commands that come in handy
#showing errors only for ports with traffic
porterrshow | grep -v ': 0 0'
#showing only errors for ports with errors
porterrshow | grep -v '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
#showing all SFPs with its powerreadings, you should check the ones that RX Power (incoming light) is below -4dBm and
#TX Power is above -0.3 dBm that usually indicates dirty cables
sfpshow -all | grep -E 'Power|Port '
