[c-nsp] VSM NAT - throughput

[Pshem Kowalczyk]

Hi,

Thank you for this. I'm just a little concerned that this looks like a
exact copy of the section of the document on the ISM card (with ISM
replaced with VSM):
https://supportforums.cisco.com/document/11939006/cgv6-ism-cgnnat44-deployment-guide#nat44-on-ism-configuration

So they either exactly the same, or it's just a copy-paste error.

Also reading this section:

https://supportforums.cisco.com/document/12019576/cgv6-vsm-cgn-nat44-deployment-guide#handling-of-asymmetric-i2o-and-o2i-traffic-with-better-performance
seems to indicate a different setup from ISM card (our traffic is highly
asymmetric, this would apply).

I have not found any information on the actual throughput either.

kind regards
Pshem


On Mon, 23 May 2016 at 19:18 Fredrik Vöcks <fredrik.vocks at bredband2.se>
wrote:

> Hi Pshem,
>
> Yes you need to partition the VSM to get full throughput. I finally found
> the document;
>
> Logical Partitioning inside VSM
>
>
> https://supportforums.cisco.com/document/12019576/cgv6-vsm-cgn-nat44-deployment-guide#nat44-on-vsm-configuration
>
>
> Regards,
>
> Fredrik
>
> On 23 May 2016 at 02:34, Pshem Kowalczyk <pshem.k at gmail.com> wrote:
>
>> Hi,
>>
>> With the ISM cards we used to run 4 set of VRFs (and 4 sets of SA
>> interfaces) to achieve full throughput of the card for NAT. We're
>> upgrading
>> to VSM cards now, but I'm unable to determine if they also need a similar
>> split of traffic or not. I seem to recall that they should be able to do
>> about 60Gb/s of throughput and apparently the traffic needs to be split
>> into two pairs of SA interfaces to achieve that, but really can't find a
>> source of that information.
>>
>> My google fu is failing me today, but perhaps someone can point me to the
>> relevant document or share some experience.
>>
>> Thx,
>>
>> Kind regards
>> Pshem
>>
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