[c-nsp] DHCP Proxy

[Ambedkar]

Thanks for the replies... i will test and come back...

Thanks
P Ambedkar

On Tue, Jan 20, 2015 at 3:26 PM, Peter Rathlev <peter at rathlev.dk> wrote:

> On Tue, 2015-01-20 at 09:06 +0100, Peter Rathlev wrote:
> > On Tue, 2015-01-20 at 10:09 +0530, Ambedkar wrote:
> > > I want to send the Proxy settings includes IP address, port number
> through
> > > DHCP in cisco routers and switches.
> > >
> > > Is it possible to send ?
> > > If yes, How ??
> >
> > Can you be a bit more precise? Do you want to forward DHCP requests on a
> > non standard port, i.e. not 67/UDP? [...]
>
> Sorry, misread your question. :-) Joshua seems to have it right.
>
> According to Microsoft Technet:
>
>   http://technet.microsoft.com/en-us/library/cc940962%28v=ws.10%29.aspx
>
> the option 252 is a string in the format:
>
>   http://<SecurityServerName>:<PortNumber>/wpad.dat
>
> Configuration like this could thus work:
>
>   ip dhcp pool 192.0.2.0/24
>     [ other options and parameters ]
>     option 252 ascii "http://192.0.2.50:1234/wpad.dat"
>     exit
>   !
>
> Beware that some clients aren't asking for option 252 during the DORA
> sequence and instead sends INFORMs some time after, as this message
> seems to imply:
>
>   https://lists.isc.org/pipermail/dhcp-users/2013-September/017193.html
>
> As far as I know, in IOS you can't send options the client isn't asking
> for in the REQUEST. (That is: You can't modifWhich means your clients
> might not pick up the WPAD option at all.
>
> --
> Peter
>
>