[96439] in RedHat Linux List
Re: Router configuration.
daemon@ATHENA.MIT.EDU (waqar ali janjua)
Tue Oct 27 05:03:57 1998
Date: Tue, 27 Oct 1998 15:06:25 +0500
From: waqar ali janjua <waqar@mathtech-pk.com>
To: g.nix@emnet.co.uk
CC: redhat-list@redhat.com
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Thanks,
But what about concentrators; a 16 port concentrator will be
enough i think but the problem is HOWTO configure a concentrator with linux?.
I'll try to configure the machines as routers according to your instructions
and let u know if it works like the way i want or not.
Waqar.
Godfrey Nix wrote:
> Hi there from England,
>
> You can get the LANs set up, but not exactly as you write. Thats why
> I am getting back to you quickly.
>
> You need to have the networks in multiples of 2, so you cannot split
> in groups of 20. Use 32 instead, and your groups will be like this -
> 0 to 31, 32 to 63, 64 to 95, 96 to 127 and your network mask will be
> 255.255.255.224
>
> Then you could set up a series of ppp interfaces to handle the
> dial-up links. Define one IP address in each group as the router and
> set the ppp interfaces of the routers on each lan to have the phone
> number and ip address of the other routers.
>
> Note that you are using a 'reserved' range of IP addresses and so the
> main router to the internet will need to have address
> translation/masquerading to use 'real' addresses to the rest of the
> internet.
>
> As for modem handling, I guess you should look at a device like those
> made by Digi (digiboards have 4, 8 or 16 serial ports on one card).
>
> Hope this helps,
>
> Godfrey Nix
>
> > Date: Tue, 27 Oct 1998 13:54:14 +0500
> > From: waqar ali janjua <waqar@mathtech-pk.com>
> > To: redhat-list@redhat.com
> > Subject: Router configuration.
> > Reply-to: redhat-list@redhat.com
>
> > Guyz pleez help me out!
> >
> > the problem is that i want to configure 5 machines as routers.
> > The scenario is that we have 5 offices in a single city. Now i want to
> > connect these 5 LANS together through ISDN(bri) lines. One of these
> > offices will be connected to the ISP; which will be internet gateway.
> > Questions:
> > 1)How can i configure linux redhat machines as routers. i.e. how will
> > i define that a specific machine is on this gateway.
> > 2)How can i define the routing table and where?
> > e.g,
> > one LAN(which is connected to isp) has ip's between 192.168.0.1
> > -192.168.0.20
> > second LAN has ip's between 192.168.0.21 - 192.168.0.40
> > third LAN has ip's between 192.168.0.41 - 192.168.0.60
> > fourth LAN has ip's between 192.168.0.61 - 192.168.0.80
> > fifth LAN has ip's between 192.168.0.81 - 192.168.0.90
> > So how can a machine from LAN 1 connects to a machine in LAN 4 whose
> > IP is 192.168.0.65?
> > How will i define in the routing table of LAN1 that machines with ip's
> > 192.168.0.61 - 192.168.0.80 are on this/that gateway?
> > I've read routed but i cant find any howto for configuring a machine as
> > a gateway rooter.
> > 3) the four LANS i.e, 2,3,4,5 will connect to LAN 1, and these have to
> > be connected through modems, the gateway machine which will be connected
> > to ISP will be having 10 modems (atleast) , than i have to buy and
> > configure a "concentrator";;;Now the question is HOWTO configure a
> > concentrator in linux(redhat 5.0) so the machine can recognize ten
> > modems (interfaces)???
> > So pleeeeez help me out!!!!!
> > Thanks,
> > Waqar.
> >
> >
> Godfrey N Nix C.Eng MBCS B.ScTech(Hons)
> Network Operations Manager
> East Midlands Network Ltd (emnet)
> phone 0115 956 8260
> visit http://www.emnet.co.uk
>
> --
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