12-19-2002 08:50 AM - edited 03-02-2019 03:43 AM
I have a problem with dns-requests.
Due to an application that was distributed in the early days. People are dialing in to our network with fixed dns-addresses.
I can't find a way to override these addresses during ppp negotiation or with radius-attirbutes but nothing helped.
Now we want to switch dns-servers but it is impossible to reach all of the dailin customers to download another dial application.
Is there a way to configure the as-5300's to send dns-requests bound for the old dns-servers to the new ones with other ip-addresses?
Please help,
Regards,
Martijn Koopsen
12-19-2002 09:50 AM
You can use "async-bootp dns-server x.x.x.x y.y.y.y" command to force the dialin users to negotiate the dns-server ip address that you want.
Here is the url which has a config and commands explanation for that too.
http://www.cisco.com/warp/public/793/access_dial/winsdhcp.html
Now you can also use AAA for that as well.
You just need to confiure the correct AV-Paitr for that.
Here is the url for that too.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113t/113t_4/dnsserv.htm
12-19-2002 10:09 AM
Thanks for the swift response on my post.
I already have the first option you gave implemented on the as-5300's but the second one is new to me........been looking for it all day.
Will try it tomorrow as soon as i am in the office.
Hope it works.
Thanks
12-20-2002 03:23 AM
I tried both the options but unfortunately it does not work.
First of all when i look at a debug ppp negotiation i do not see the dial-up user ask for dns-servers.
Second it looks like only the newer Windows sytems (NT,2K,XP) seem to do this the oter OS-es always ask for dns -servers and if they ask for it they get some from the as-5300.
I hope somebody has some other options.......
01-06-2003 12:04 AM
Is there somebody who knows anything i can do to redirect the dns-requests?
I am still looking for an answer but i am unable to find it.
Regards,
Martijn Koopsen
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