Re: ASR Performance with Netflow Sampling

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
>>>
>>>
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Received on Wed Feb 11 2015 - 20:36:52 ART