[c-nsp] Mixing PFC3B and DFC3A with 10G linecards / 6500

[Tom Ammon]

Wow, that's a great list.

Thanks everybody for the replies!

Tom

On 04/03/2010 07:23 AM, Łukasz Bromirski wrote:
> On 2010-04-03 11:00, Gert Doering wrote:
>
>    
>> As far as I understand, there is no performance difference, but the
>> PFC3A is buggy regarding MPLS.  So you lose MPLS support.
>> (There might be other caveats - I don't have a conclusive list, all I've
>> heard so far is "PFC3A is bad, use PFC3B").
>>      
> > From top of my head:
>
> - L2 multicast bridging won't work with MTU/TTL rate limiter
> - the hash efficency for NetFlow is at 50%, so with PFC3A you get
>    around 64k entries, not like in PFC3B around 110k entries
> - only 512 ACL labels, compared with 4096 for PFC3B
> - no ACL hit counters
> - no support for L2 classification of IP packets
> - QoS on tunnel interfaces done in software vs in hardware for
>    PFC3B
> - no MPLS at all (only with OSMs/FlexWANs)
> - VRF Select not supported
> - no multicast in VPNs
>
>    

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Tom Ammon
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