HP Cisco MDS 9134 Cisco MDS 9000 Family Command Reference - Cisco MDS SAN-OS R - Page 996

switchport ignore bit-errors Chapter 21 S Commands Send documentation comments to [email protected] switchport ignore bit-errors To prevent the detection of bit error threshold events from disabling the interface on Fibre Channel interfaces, use the switchport ignore bit-errors command. To revert to the default, use the no form of the command. switchport ignore bit-errors no switchport ignore bit-errors Syntax Description This command has no arguments or keywords. Defaults None. Command Modes Interface configuration submode. Command History Release 2.1(1a) Modification This command was introduced. Usage Guidelines The bit error rate threshold is used by the switch to detect an increased error rate before performance degradation seriously affects traffic. Bit errors can occur for the following reasons: • Faulty or bad cable • Faulty or bad GBIC or SFP • GBIC or SFP is specified to operate at 1 Gbps but is used at 2 Gbps • Short haul cable is used for long haul or long haul cable is used for short haul • Momentary sync loss • Loose cable connection at one or both ends • Improper GBIC or SFP connection at one or both ends A bit error rate threshold is detected when 15 error bursts occur in a 5-minute period. By default, the switch disables the interface when the threshold is reached. You can issue a shutdown/no shutdown command sequence to reenable the interface. Note Regardless of the setting of the switchport ignore bit-errors command, the switch generates a syslog message when bit error threshold events are detected. Examples The following example shows how to prevent the detection of bit error events from disabling the interface. 21-78 Cisco MDS 9000 Family Command Reference OL-16217-01, Cisco MDS SAN-OS Release 3.x