[c-nsp] CSR1000v as an IPSLA probe

[Chuck Church]

How many probes do you run?  What frequency?  The group scheduler for us has
worked well, running a hundred plus on a 3800, 5 min CPU never over 2%.
Just ICMP echo though.

Chuck

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Dan
Peachey
Sent: Friday, April 10, 2015 4:54 AM
To: Mack McBride
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] CSR1000v as an IPSLA probe

Hi,

2911 wouldn't have the grunt for our required number of probes but I will
likely look at the newer ISR 4000 range should the CSR1000v prove
unsuitable.

I would like to have thought that with properly managed VM resources the
CSR1000v could be a good candidate for this function but it doesn't seem to
be the case so far.

Regards,

Dan



On 9 April 2015 at 18:54, Mack McBride <mack.mcbride at viawest.com> wrote:

> Virtualized environments are not ideal for this unless they are 
> dedicated to the task.
> Ie. one VM on one physical box.
> Other issues related to SLA are jitter and latency.
> These can be a serious problem in a virtualized environment.
> You would be much better served by getting a 2911.
>
>
> http://www.cisco.com/c/en/us/products/routers/2911-integrated-services
> -router-isr/index.html
>
> If you are only concerned about reachability then a VM might work ok.
> It would require tuning so that the VM associated with the CSR1000v is 
> getting priority on The resources, particularly network buffers.  And 
> adjusting QoS so the ping packets Have preference on the upstream 
> switch.
> But again, this isn't ideal.  Getting a 2911 would probably still be a 
> better option.
>
> Mack McBride | Network Architect | ViaWest, Inc.
> O: 720.891.2502 | mack.mcbride at viawest.com | www.viawest.com | 
> LinkedIn | Twitter | YouTube
>
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf 
> Of Dan Peachey
> Sent: Thursday, April 09, 2015 10:24 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] CSR1000v as an IPSLA probe
>
> Hi,
>
> Is anyone using a CSR1000v VM as an IPSLA probe? If so I would like to 
> hear your experiences with it.
>
> I'm currently evaluating it and have come out with some poor test 
> results so far, with the main issue being tail dropped packets when 
> CPU utilisation is above ~30%.
>
> Regards,
>
> Dan
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