[c-nsp] Troubleshooting IPv6 throughput on a GSR 12410

[Colin Whittaker]

On Thu, Dec 15, 2005 at 09:23:29AM -0500, Aaron Daubman wrote:
> Greetings,
> 
> I'm generating a fixed ipv6 flow (1230 byte frames) at 80025 fps (~787Mbps).
> What's concerning is that only between 58000 and 59000 fps are being
> received out the other end.
> 
> The setup is: IXIA==>(GigE)GSR(OC-48)==>IXIA
> 
> The generated flow hits my GSR on a port on a Modular Gbe Line card:

This may be your problem. I recall the modular cards as being engine 4
which means CPU forwarded IPv6. The CPU in question is the Linecard CPU. 
Can you check the LC CPUs.

> Any ideas?  How do I hunt down where these missing 20000fps are getting dropped?

-- 
Colin Whittaker						+353 (0)86 8211 965
http://colin.netech.ie				   colin@(magnet|netech).ie