Re: NAT CEF

swap m @ 19/5/2010 11:43 -0300 dixit:
> For 5-6Mb traffic, you can safetly use NAT.
>
> on 6500, NAT translation creation is software switched, the flow
> afterwards is still on hardware.

Are you sure about this ?
-Carlos

>
> IP nat outside doesnt affect other traffic that doesn't match NAT
> rule. Other traffic is hardware switched as if NAT is not configured.
> And in case you feel the traffic rate will be high in future, you can
> always put a NAT ratelimit, that'll ensure the box doesnt die.
>
> Swap
> #19804
>
> On Wed, May 19, 2010 at 6:14 PM, Maarten Vervoorn <mr.vervoorn_at_gmail.com> wrote:
>> Only a small part of that traffic is needed to be translated. 5-6Mbit. So is
>> it the case that when you configure ip nat outside on a interface all
>> traffic will be softare switched from that interface?
>>
>> 2010/5/19 Tyson Scott <tscott_at_ipexpert.com>
>>
>> Maarten,
>>> I would recommend taking this up with your account rep. That is a lot of
>>> traffic to be software switched.
>>>
>>> Regards,
>>>
>>> Tyson Scott - CCIE #13513 R&S, Security, and SP
>>> Technical Instructor - IPexpert, Inc.
>>> Mailto: tscott_at_ipexpert.com
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>>> Maarten Vervoorn
>>> Sent: Wednesday, May 19, 2010 9:41 AM
>>> To: Cisco certification
>>> Subject: NAT CEF
>>>
>>> Hi group.
>>>
>>> For the mirgation of a very important business application we want to use
>>> NAT to migrate every connection of that application to the new IP address.
>>> The networks are configured on a 6500 sup720 switch. I read the Cisco
>>> documentations and noticed that NAT translation had to be done in software.
>>> The outside NAT interface or on a 20Gbit connections (these are avarage
>>> loaded with 1-5Gbit. Will the configuration of NAT degrade my performance?
>>>
>>> Kind regards,
>>>
>>> Maarten Vervoorn
>>>
>>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net