[21271] in North American Network Operators' Group
Re: WCCP talk..
daemon@ATHENA.MIT.EDU (lincoln dale)
Mon Nov 9 17:20:19 1998
Date: Tue, 10 Nov 1998 09:10:36 -0800
To: alex@nac.net, nanog@merit.edu
From: lincoln dale <ltd@interlink.com.au>
In-Reply-To: <Pine.BSF.4.05.9811091541450.7208-100000@iago.nac.net>
At 03:44 PM 11/9/98 -0500, alex@nac.net wrote:
>My question is, what prevents a cache from seding a WCCP frame saying,
>"Hey, I'm alive" when it really isn't?
the application itself (layer 7) is most likely to know more about whether
the application is alive and working than anything else.
>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.
i believe WCCP is more a heartbeat mechanism - the router will age WCCP
'hello' packets and expire them. presumably if it doesn't hear one of the
cache engines 'check in', it'll stop forwarding traffic to it.
cheers,
lincoln.
