Large Scale Transparency - Disadvantages?

Hi,

I haven't implemented larger-scale ISP-size transparent caching.

Based on the messages on this topic for the past few months, simple router IP
redirection to the squid box is problematic?

How about WCCP, does it get around the problems that are due to the fact that
the browser doesn't know the presence of a cache?

How do the commercial caches deal with this, or do they have the same problem?

Thanks!
---m

-- 
Miguel "Migs" A.L. Paraz	            IPhil Communications Network, Inc.
http://www.iphil.net        Business Development/Network Architecture/Training 
5/F 116 Herrera St., Legaspi Village, Makati City, Philippines  +63-2-750-2288