Information Technology

#sh int gi1/0/27

GigabitEthernet0/8 is down, line protocol is down (err-disable)

檢查該埠狀態

#show interfaces gi1/0/27 status

Port Name Status Vlan Duplex Speed Type
Gi1/0/27 err-disabled 1 auto auto unsupported

檢查system log列出下列錯誤訊息

# show interfaces status err-disabled

g#sh log
%PHY-4-CHECK_SUM_FAILED: SFP EEPROM data check sum failed for SFP interface Gi1/0/27
00:05:07: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi1/0/27 has bad crc
00:05:07: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi1/0/27, putting Gi1/0/27 in err-disable state

解決方法：

(config)#service unsupported-transceiver
(config)#no errdisable detect cause gbic-invalid
g#reload

==

經驗是Cisco Switch用dlink Gbic不行,解除限制也不行,直到換一個副廠Cisco Gbic...