topic CSS problem with dynamic webpages in Application Networking

CSS problem with dynamic webpages

j.theunissen — Mon, 04 Apr 2005 08:09:35 GMT

Hello,

I need an experts advise on an issue we have with a CSS.

One of the services configured on our CSS is a service to service our internal webpages. There is a special technique use to program these webpages. The way it works (so is told to me by our webpage designers) is that the server does a lookup of a part of the page. This is done by doing a DNS request. The DNS points to the VIP address of the webpages, not the real address. Then it goes wrong because the CSS doesn't like this. If we add a local host file with the real address all works fine.

How can we tell the CSS that for the DNS request coming from the webserver itself to use the real address and not the VIP address.

I hope it makes sense what I just wrote down.

Thanks for your help.

Re: CSS problem with dynamic webpages

Gilles Dufour — Mon, 04 Apr 2005 12:26:53 GMT

you can't create different response depending who is making the request.

Also, the CSS does not care if a server does a dns request. It will answer just like for any other devices.

However, it will respond with its VIP and when the server opens a webpage to the vip, the request will be loadbalanced and therefore there is no guarantee that the response will go back to your server.

Moreover, if servers can open connection with the vip, you need client nat to guarantee that the response will not go from one server to the other but instead go first to the CSS.

As you can see there is precautions to take for what you want to do and I think that the solution you have in place is the easiest to implement.

Regards,

Gilles.