Unfortunately, stage fright prevents me from asking this question on the NANOG meeting floor. My understanding of WCCP is that the server is responsible to tell the WCCP-enabled Cisco router that, "Hey, I'm alive to recieve port 80 requests!" My question is, what prevents a cache from seding a WCCP frame saying, "Hey, I'm alive" when it really isn't? Is there a way for the router to check the cache in the opposite direction? Seems odd that your would rely on the cache to verify that the cache is OK. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Atheism is a non-prophet organization. I route, therefore I am. Alex Rubenstein, alex@nac.net, KC2BUO, ISP/C Charter Member Father of the Network and Head Bottle-Washer Net Access Corporation, 9 Mt. Pleasant Tpk., Denville, NJ 07834 Don't choose a spineless ISP; we have more backbone! http://www.nac.net -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --