> thank you very much, it is working now, when 1st link is down the connection is > shifted to link2 and vice versa, but having another problem, remember link 1 is > connected to a pc which is configured as proxy1 with option proxy-only and > cache_dir null same as the second line connected to another machine and > confiure as proxy 2 with same configuration as proxy 1. The problem is when > link 1 is off the main proxy still do a round robin which in this case checks > the proxy 1 and proxy 2 alternatively so in case that link 1 is off therefore > when the main proxy fetches on the proxy 1 an error occured, so what can I do > is to refresh the page until the main proxy checks the second link which is the > proxy 2. > > Is there a way to configure that when the 1st is off, proxy1 will announces to > the main proxy that it has no connection to the internet so that main proxy > will not bother to visit proxy 1 instead direct all request to proxy2. > That would mean , introducing "state" in the comm. between parents. The main issue is that http is of a stateless nature and the protocol; including the caching parts do not provide a model of statefullness. Therefore I think, that is not possible. M.
