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New Member

Interface Counters ?????


I am chking interface counter on daily basis .

i have senn my seiral intfaces alots of reset ... i am asking about the this interface rest is it Logically...

if phycialyy than we can see in LOG of routers,


waiting for ur reply/


Re: Interface Counters ?????

Hi friend,

Interface reset is not logical.Its the number of times you interface has physically went down. This is a physical layer issue.

HTH, Please rate if it does.

-amit singh

New Member

Re: Interface Counters ?????


Any suggestion or guide line far this that interface went physiaclly down,

what are the main reasons behind this??? and how we can control them,

and In roouter LOG i havt senn any enty aboout the this counter .. LOG is enable.

Thanks for the replay..

Re: Interface Counters ?????

Hi Friend,

As Amit stated interface reset can be caused by link going up and down , that could be one possible reason for interface reset.

It can also happen if packets queued for transmission were not sent within several seconds' time.

On a serial line, this can be caused by a malfunctioning modem that is not supplying the transmit clock signal, or by a cable problem. If the system notices that the carrier detect line of a serial interface is up, but the line protocol is down, it periodically resets the interface in an effort to restart it.

Interface resets can also occur when an interface is looped back or shut down.

So it is not necessary that you get it in logs cause not necessarily the physical interface might have flapped.

So you can check if there any output drops or you can als check the cabling or your modem also.

HTH, if yes please rate the post.


New Member

Re: Interface Counters ?????


Thanks for the Ans.

I ahve noticed in last 48 hrs my router Ds3 interaces reset 9 times, and E3 interface reset its self 6 time ,

according to ur ans there is problem Ds3 card . or E1 card or there is problemm in Cable physical media,

thanks for the Ans

Re: Interface Counters ?????

Hi Friend,

I think problem can be with cable physical media.

Do you also see some other errors on the interfaces?


New Member

Re: Interface Counters ?????


yes other detail is detail

on Ds-3

Total output drops 16349

CRC 21641

input error 21641

out out erro 0

reset 9

on E-3

Total output drops 1549105


input error 0

out put erro 0

reset 6

Thanks for replying

Re: Interface Counters ?????

Hi Friend,

As seen there are many other errors on DS3 interface which can be sue to physical cabling issue so please check your cabling.

On E3 card there are no such errors other than many output drops which can be due to your QOS configuration and interface reset can occur if packets queued for transmission were not sent within several seconds' time. So check you QOS configuration also if you have any.

I will appreciate if you rate all helpfull posts.



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