[c-nsp] CSR1000v as an IPSLA probe

[Mack McBride]

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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