[c-nsp] FWSM and IPv6

[Ge Moua]

I've heard rumors from our Cisco acct SE that FWSMv2 will do IPv6 in Hw; 
right now with transparent mode one can pass IP protocol type 41 but can 
not actually write any IPv6 ACLs.

--
Regards,
Ge Moua
Network Design Engineer

University of Minnesota | OIT - NTS
--


On 6/24/10 11:09 AM, Benjamin Lovell wrote:
> Did a quick search and found that IPv6 packet are still processed by 
> the CPU not the ASICs on the FWSM. Also only works in routed, not 
> transparent mode. I don't know any hard numbers for forwarding 
> performance for the CPU but I would guess it's unacceptably low.
>
> As for software versus architecture limitation, it's tough to say. I 
> would guess architectural limitation but either way I doubt it will 
> change as FWSM is near the end of it's life cycle for new feature 
> development.
>
> -Ben
>
> On Jun 24, 2010, at 7:59 AM, Matthew Melbourne wrote:
>
>> Are there any real-world data available for the performance of the
>> FWSM when using IPv6 (actually multi-tenant IPv6 and IPv4). A
>> Networkers' presentation I saw suggested that IPv6 forwarding was
>> punted to the CPU rather than performed in hardware; is this still the
>> case and is it an architectural issue which cannot be addressed
>> through software?
>>
>> Cheers,
>>
>> Matt
>>
>> -- 
>> Matthew Melbourne
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