Recommended NON-VIP based 7500 swtching paths


I was looking to get some feedback as to what people are using in
production on 75XX routers on standard line cards (HIP for example) for
switching paths. I read one time on Cisco's site that on a 7500 non-vip
router, you can see up to 150k PPS using plain fast-switching, and up to
275k by using optimum. Could someone be kind enough to elaborate on the
differences between fast/optimum switching other than the addition of
'optimum' on the command line ?? I dont remeber seeing too much detailed
info on the differences of these earlier switching paths on CCO.

Feel free to reply directly via email/off-list.

Thanks in advance.

This would really be something for

  I've cc:'ed them, and set them as the reply-to, so
followups should go there.

  - jared