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Nexus 7k Link-Flap detection - what is the rate?

Dear all,

 

I please have the following short question:

What is the flapping rate (down/up in what time interval) of an interface on a Nexus 7k to trigger the "errdisable link-flap" feature?

 

I have searched a lot of documents and on the internet but I have not found any explicit information on it for Nexus.

I have just found the general information that it is triggered on some Cisco devices when an interface goes up and down more than 5 times within 10 seconds.

 

Thank you for your feedback.

 

Cheers

Karl

 

 

5 REPLIES 5
marce1000
VIP Advisor

 

 - Do you have show errdisable flap-values  as an available command  on the N7K ?

M.

 

Hi. the "show errdisable flap-values" ist not available on my Nexus 7k with v7.2. Thats my Problem. ;-) show errdisable flap ? > Redirect it to a file >> Redirect it to a file in append mode | Pipe command output to filter Cheers, K.

 

 - Check wether you can influence the behavior of flap detection with :

           config # errdisable flap-setting cause link-flap max-flaps 3 time 20

 

M.

Sorry, even this is not available on N7K NX-OS 7.2 >>config # errdisable flap-setting cause link-flap max-flaps 3 time 20 Cheers, K.
aloeffle
Beginner

SW2(config)# show event manager policy-state __ethpm_link_flap
Policy __ethpm_link_flap
Cfg count : 30
Cfg time interval : 420.0 (seconds)
Hash Count Policy will trigger if
----------------------------------------------------------------
Eth1/45 0 30 more event(s) happen in 420.0 sec
Eth1/47 0 30 more event(s) happen in 420.0 sec
Eth1/48 0 30 more event(s) happen in 420.0 sec
Eth1/1 0 30 more event(s) happen in 420.0 sec
SW2(config)#