is it possible to check how much time interface was down?

[webstd.design]

Just using IOS commands is it possible the above?

Need something like sh ver

Thanks

[SunilKhanna]

I guess not, in cli your options are

SW1#sh int gig 0/6 ?

  accounting      Show interface accounting

  capabilities    Show interface capabilities information

  controller      Show interface status, configuration and controller status

  counters        Show interface counters

  crb             Show interface routing/bridging info

  dampening       Show interface dampening info

  debounce        Show interface debounce time info

  description     Show interface description

  etherchannel    Show interface etherchannel information

  fair-queue      Show interface Weighted Fair Queueing (WFQ) info

  flowcontrol     Show interface flowcontrol information

  irb             Show interface routing/bridging info

  mac-accounting  Show interface MAC accounting info

  mpls-exp        Show interface MPLS experimental accounting info

  mtu             Show interface mtu

  precedence      Show interface precedence accounting info

  private-vlan    Show interface private vlan information

  pruning         Show interface trunk VTP pruning information

  random-detect   Show interface Weighted Random Early Detection (WRED) info

  rate-limit      Show interface rate-limit info

  stats           Show interface packets & octets, in & out, by switching path

  status          Show interface line status

  summary         Show interface summary

  switchport      Show interface switchport information

  transceiver     Show interface transceiver

  trunk           Show interface trunk information

  vlan            Show interface vlan information

  |               Output modifiers

Regards,

Sunil

Pls rate the post, if you find the content useful.

[webstd.design]

Someone said me that it's possible

[SunilKhanna]

Not through ios i believe, one can check the log timestamp.

SW1(config)#int gig 0/12

SW1(config-if)#sh

SW1(config-if)#

*Mar  2 15:29:02.626: %LINK-5-CHANGED: Interface GigabitEthernet0/12, changed state to administratively down

SW1(config-if)#no sh

SW1(config-if)#

*Mar  2 15:30:11.916: %LINK-3-UPDOWN: Interface GigabitEthernet0/12, changed state to down

Regards,

Sunil

Pls rate the post, if you find the content useful.

[Leo Laohoo · Accepted solution]

Sure you can.  Enter the most basic command "sh int " and look under "Last input".  For example:

GigabitEthernet1/0/8 is down, line protocol is down (notconnect)

Hardware is Gigabit Ethernet, address is 0023.ad07.5408

Description:

MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 8w2d, output 8w2d, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 20

[webstd.design]

Thank you all, but I wanted to know how long WAS interface down and not IS down

[Leo Laohoo]

Ahhhh ... You want the downtime of the interface?  Then "sh logs" will do (hoping you have enough buffer to capture the time the interface went down).