Err-disabled Recorvery Flashcards
Which errdisable recovery command option enables a device to recover from a potential loop condition?
A. link-flap
B. security-violation
C. udld
D. dtp-flap
Answer: C
A question about how to recover err-disable. (Choose two)
A. UDLD reset
B. Err-disable auto recovery
C. Shut and restart
D. UDLD recovery
Answer: A B
Refer to the exhibit ***** errdisable recovery cause udld udld port aggressive mode current operational status : disabled port message interval 7 time out interval 5
fa0/13 is down, line protocol is down (err-disabled) mtu 1500 bw 1000, dly 1000 loopback not set keepalive set 10 sec *****
Which two statements of the above result is true? (Choose two)
A. As a result of STP, interface was err-disabled
B. UDLD reset command recovers the disabled ports after the error is corrected
C. UDLD negotiation failed when neighbor switch went offline
D. UDLD mode changed from normal to aggressive when the error was detected
E. UDLD aggressive mode put the interface into an error disabled state
Answer: B E
A question about a fiber connected EtherChannel after the switches were powered on the ports went errdisable.
A. Due to UDLD errdisable it.
B. Due to EtherChannel misconfig.
C. ?
D. ?
Answer: A
Which two port err-disabled recovery options are used to detect the reason? (Choose two)
A. show errdisable detect
B. show errdisable recovery
C. error-disable notifications/traps are active by default.
D. error-disable notifications/traps are disabled by default.
E. error-disable notifications/traps is never possible.
Answer: A B
Which errdisable recovery command option enables a device to recover from an incorrect SFT state?
A. link-monitor-failure
B. sfp-config-mismatch
C. gbic-invalid
D. port-mode-failure
Answer: A
Which command is used to verify errdisable on any interface?
A. show err-disable detect
B. show interfaces err-disable status
C. show interface status err-disabled
Answer: C
Which two statements about errdisable recovery are true? (Choose two)
A. You can use the show errdisable recovery command to view the reason a port was error-disabled
B. Errdisable detection is enabled by default on ports with port security enabled
C. You can use the show errdisable detect command to view the reason a port was error-disabled
D. Errdisabled autorecovery is enabled by default
E. Errdisabled detection is disabled by default on ports with port security enabled
Answer: A B
Which command is used to verify errdisable on any interface?
A. show err-disable detect
B. show interfaces err-disable status
C. show interface status err-disabled
Answer: C
Which two statements about errdisable recovery are true? (Choose two)
A. You can use the show errdisable recovery command to view the reason a port was error-disabled
B. Errdisable detection is enabled by default on ports with port security enabled
C. You can use the show errdisable detect command to view the reason a port was error-disabled
D. Errdisabled autorecovery is enabled by default
E. Errdisabled detection is disabled by default on ports with port security enabled
Answer: A B
Which two statements about error-disabled ports are true? (Choose two)
A. When a port is error-disabled, it may continue to pass management traffic
B. When a port is error-disabled, all traffic on the port stops.
C. By default, error-disabled ports automatically recover once the issue is resolved
D. When a port is error-disabled, the port LED changes to solid orange
E. They can be recovered only by resetting the interface
Answer: B D
Which two circumstances can cause a port to errdisable? (Choose two)
A. It is connected to a host with an NIC that is unable to recognize
B. The switch incurred a port security violation
C. It detected a collision
D. It learned a new MAC address
E. It detected a peer with a matching duplex
Answer: B D
