[c-nsp] 4948 IPv6 Throughput

Seth Mattinen sethm at rollernet.us
Sat Nov 7 03:54:07 EST 2009


Harald Firing Karlsen wrote:
> Seth Mattinen wrote:
>> Marco van den Bovenkamp wrote:
>>  
>>> Yes, it means 'It can't really do it, but we pretend it can'
>>>     
>>
>>
>> I figured as much.
> Well, what exactly do you want to know? It means the switch punts all
> IPv6-packets destined for another prefix to the CPU rendering it quite
> useless for forwarding IPv6 packets, but it will probably work fine with
> IPv6 for management (telnet, snmp, etc).
> 
> If you want performance numbers my bet is you won't be able to push more
> than about 75-100Mbps under ideal conditions (all 1500B or 9KB packets),
> but it all depends on the traffic. It is impossible to predict the
> performance of a switch doing forwarding in software.
> 

General forwarding, access lists, etc. Anything you would do with IPv4
right now but in a dual-stack network where things prefer IPv6 first.
I'm using 3750's and their TCAM space for v6 stuffs is somewhat tiny.

~Seth


More information about the cisco-nsp mailing list