[j-nsp] Latency Spike

Mark Tinka mark.tinka at seacom.mu
Wed Jul 23 08:43:51 EDT 2014


On Wednesday, July 23, 2014 12:03:00 PM Samol wrote:

> I tested this segment by segment (point to point) between
> the two devices, and I still see this latency spike. I
> assume this is normal in the network as router/switch
> needs time to calculate and send back to source.

> Is There anyone experienced this or anything can cause
> this ?

I've seen this on MX480's as well, running the current 
generation RE's and nothing else happening in the 
background.

The jitter is quite high, but is not representative of the 
network. More like the ICMP process (I presume), as the CPU 
really isn't busy.

Running the ping on a Cisco CRS on the other side offers 
much more stable numbers.

I don't worry about it too much, until my SLA probes that 
sit behind these routers start reporting issues.

Mark.
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