Re: ASR Performance with Netflow Sampling

I cranked it and it didn't burp.

Sent from my iPhone

> On Feb 12, 2015, at 7:42 AM, marc abel <marcabel_at_gmail.com> wrote:
>
> JB,
>
> I don't have an answer for you, I would be interested in what you find out.
I just deployed some ASR 9006s but set the sampling rate really high (1 in
1000) with the intention of lowering it and monitoring.
>
> An interesting tidbit, the ASR 1000 by default is no longer capable of
taking a full internet BGP feed since we passed 500K routes a while back.
>
> -Marc
>
>> On Wed, Feb 11, 2015 at 6:36 AM, Chris Rae <chris.rae07_at_me.com> wrote:
>> Yeah.....its one of of the few platforms in Cisco's arsenal that you would
have to push multi-10Gbps through to effect the performance.
>>
>> Years ago we where running netflow as well as BGP/OSPF/QOS etc on the 2800
series platform.
>> If the 2800 can handle it....i dont think the ASR will have an issue. ;)
>>
>> Chris
>>
>> > On 11 Feb 2015, at 1:17 pm, JB Poplawski <jb.poplawski_at_gmail.com> wrote:
>> >
>> > Flipped it on and didn't burp. In theory it's taking a sampling of CEF so
not a packet capture per se. Just don't want to be the guy turning it up and
breaking things.
>> >
>> > Thanks for replying.
>> >
>> > Sent from my iPhone
>> >
>> >> On Feb 10, 2015, at 9:04 PM, Chris Rae <chris.rae07_at_me.com> wrote:
>> >>
>> >> Impact performance on an ASR??? I doubt it.
>> >> They have dedicated quantum flow processors for forwarding and separate
processors for QoS etc.
>> >> I would be surprised if you impacted the performance.
>> >> I implemented a pair of ASR 1006s about 7 years ago for a customer,
including netflow. Didn't put a dent in the CPU overhead.
>> >> But check the bug list for the IOS you using and make sure there are no
known memory leak issues or bugs around netflow to be safe.
>> >>
>> >> Definitely raise a change for production equipment if you are worried
about impact.
>> >> Even if you set the impact to low....it covers ur arse :)
>> >>
>> >> Chris
>> >>
>> >>> On 11 Feb 2015, at 5:12 am, JB Poplawski <jb.poplawski_at_gmail.com>
wrote:
>> >>>
>> >>> Figured someone out here is better at Google than me. :)
>> >>>
>> >>> Been running V5 Netflow, obviously the newer devices are on 9 and more
>> >>> configurable.
>> >>>
>> >>> My question/concern.
>> >>>
>> >>> If I set 1 outof 2 sampling rate, am I going to impact performance on
the
>> >>> box? Try setting it during a change window and see?
>> >>>
>> >>> Cisco has a performance guide, slightly dated and of course it doesn't
>> >>> cover the new products (Nexus 6k, ASRs, etc).
>> >>>
>> >>>
http://www.cisco.com/c/dam/en/us/solutions/collateral/service-provider/secure
-infrastructure/net_implementation_white_paper0900aecd80308a66.pdf
>> >>>
>> >>> Any advice or guidance?
>> >>> JB
>> >>>
>> >>>
>> >>> Blogs and organic groups at http://www.ccie.net
>> >>>
>> >>>
Received on Thu Feb 12 2015 - 08:03:46 ART