Cisco：当速率低时，由于“位错误率太高”，FC 接口被禁用

%PORT-5-IF_DOWN_BIT_ERR_RT_THRES_EXCEEDED: %$VSAN 1%$ Interface fc1/1 is down (Error disabled - bit error rate too high) 
%MODULE-4-MOD_WARNING: Module 1 (Serial number: JAF1234567) reported warning on ports fc1/1 (Fibre Channel) due to MAC Bit error exceeded threshold in device DEV_TBIRD_MAC (device error 0xc9a01503)

show process creditmon event-history 9) Event:CREDITMON_EVENT_ERR_COUNT, length:46, at 446583 usecs after Tue Apr 29 23:20:25 2014 port : cur=0x6ff4 prev=0x6ff3 occurances=15 21) Event:CREDITMON_EVENT_ERR_COUNT, length:46, at 946708 usecs after Sat Apr 26 19:57:48 2014 port : cur=0x6fe7 prev=0x6fe6 occurances=1

如果在发生 = 1 的 5 分钟后发生 = 15，则端口 fcx/y 已命中此错误。