Re: please advise - problem with routing
From: andrew (kc2ine_at_yahoo.com)
Date: 10/19/04
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Date: Mon, 18 Oct 2004 23:40:38 -0500
Hi Dana,
here is like it looks:
_____________
| video recording dev|
|____________|
|
192.168.2.2 (static)
|
|
NIC2
192.168.2.1
_|_
| |
| | first server (Actually a router also)
|____| WinNT4.0 IP routing enable (checkbox)
|
NIC1
192.168.1.1
|
192.168.1.1/24 (in this network I added using route command:)
____|______ route add 192.168.2.0 mask 255.255.255.0 192.168.1.1 and
works
| ROUTER |
|__________|
192.168.26.1/24
|
|
192.168.26.x/24 (no dhcp)
(from this network main server is accessed through GW 192.168.26.1)
in that network I cannot of course add gatway 192.168.1.1 directly, and
thats my problem.
so how to routr this. without adding additional NIC (not possible)
thanks, Andrew
"Dana Brash" <dbrash@Phongsaly.com> wrote in message
news:ehquaSQtEHA.1308@tk2msftngp13.phx.gbl...
> Hi Andrew,
>
> >>I have 2 network 192.168.1.1 and 192.168.26.1 connected together by
> >> router.
>
> Actually, these are HOST addresses, not NETWORK addresses.
> But working with the concept that we've got two subnets 192.168.1.x/24 and
> 192.168.26.x/24, you could accomplish this a couple different ways. The
> first diagram below shows a literal interpretation of this statement. The
> second diagram shows a different way that you could accomplish this.
These
> are by no means the only ways to do it....
> If your config is different, please point out where.
>
> >> > On first server 192.168.1.1 I have additional NIC 192.168.2.1 which
is
> >> used
> >> > by some
> >> > device.
>
> What is that device? a printer? Wireless AP? Another comptuer? What is
it's
> purpose?
> Not terribly important, but may be helpful to know...
>
> >> >From 192.168.1.1 I can access that device since I checked IP
> >> routing
> >> > on that sever
>
> Again, I will assume that this means from the 192.168.1.x/24 subnet you
can
> access the 192.168.2.x/24 subnet
> How have you enabled routing on this device? Are you using RRAS? Static
> Routes?
>
> >> > and use 192.168.1.1 as a gateway,
> As far as I can tell, this HOST IP address should be the private side of
> your Internet Router, and not related to routing between the two internal
> subnets
>
> >> >but I cannot access that device from
> > the
> >> > second 192.168.26.1 network.
> Right, you need to add the routes.
>
>
> Below are some example setups, but again, I'm not too sure how you've got
> your topology configured.
> Again, there are many ways to accomplish what you're trying to do. Please
> help us understand what you've actually done. Feel free to modify the
> diagrams to draw us a picture.
>
> HTH,
> =d=
>
> --
> Dana Brash
> MCSE, MCDBA, MCSA
>
> dbrash@gmail.com
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> In this diagram for packets from 192.168.26.x to reach 192.168.2.x, the
> router needs to have a route entry that directs traffic to the
> 192.168.2.x/24 network via the 192.168.1.11 Gateway using ETH0
> ("/24" = "24 bit" = "255.255.255.0" subnet mask)
>
> ********************************************************
> _____________
> | Some Device |
> |____________|
> |
> 192.168.2.??/24
> |
> |
> NIC2
> 192.168.2.x/24
> _|_
> | |
> | | first server (Actually a router also)
> |__|
> |
> NIC1
> 192.168.1.11/24
> |
> |
> 192.168.1.1/24 (let's say ETH0)
> ____|______
> | ROUTER |----/\/\/---(ETH2)---/\/\/---->> INTERNET
> |__________|
> 192.168.26.1/24 (let's say ETH1)
> |
> |
> 192.168.26.x/24
> ********************************************************
>
>
>
> In this diagram for packets from 192.168.26.x to reach 192.168.2.x,
ROUTER-2
> will have a Route from 192.168.26.x/24 -> 192.168.2.x/24 via 192.168.1.11
> Gateway using Interface 192.168.1.12 (RT2_ETH0).
> There will also be a default route on Router2 that uses ROUTER1 ETH0 as
the
> default gateway.
>
===========================================================================
> ON ROUTER2:
> Network Destination Netmask Gateway Interface
> Metric
> . .
> 192.168.2.0 255.255.255.0 192.168.1.11 192.168.1.12
> ??
> . .
> Default Gateway: 192.168.1.1
>
===========================================================================
>
> ********************************************************
> _____________
> | Some Device |
> |____________|
> |
> 192.168.2.??/24
> |
> |
> Server_NIC2
> 192.168.2.x/24
> _|_
> | |
> | | first server (Actually a router also)
> |__|
> |
> Server_NIC1
> 192.168.1.11/24
> |
> |
> ____\/____ __________
> | Switch |--(RT1_ETH0)-->| ROUTER1 | --(RT1_ETH1)----->> INTERNET
> |________| 192.168.1.1/24 |__________| PUBLIC IP
> ^
> |
> |
> 192.168.1.12/24(let's say RT2_ETH0)
> |
> ____\/______
> | ROUTER 2 |
> |__________|
> |
> 192.168.26.1/24 (let's say RT2_ETH1)
> |
> |
> 192.168.26.x/24
> ********************************************************
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
> --
> Dana Brash
> MCSE, MCDBA, MCSA
>
> dbrash@gmail.com
>
> "andrew" <kc2ine@yahoo.com> wrote in message
> news:%233SjBPLtEHA.2808@TK2MSFTNGP14.phx.gbl...
> > Hi Mike,
> > I use gateway 255.255.255.0 in both. The 192.168.26.1 is not on the
> > server,
> > this is separated remote network with router( GW 192.168.26.1) The
> > problem
> > is what gateway use to get to 192.168.2.1 network. I use 192.168.26.1 GW
> > to
> > get to 192.168.1.1 and this work.
> > The NIC 192.168.2.1 is on the server 192.168.1.1 (second NIC)
> > thanks, Andrew
> >
> > "Miha Pihler" <mihap-news@atlantis.si> wrote in message
> > news:uh6LV8BtEHA.2660@TK2MSFTNGP12.phx.gbl...
> >> Hi Andrew,
> >>
> >> You haven't told us the subnet mask that you use (in this case, this
> >> would
> >> be very important information).
> >>
> >> If you decided to use default subnet mask for 192.168.x.x network that
> > would
> >> be 255.255.255.0 (or 24 bit subnet mask). If we look at an example one
> >> subnet would be:
> >> 192.168.1.1 - 192.168.1.255 with 24 bit subnet mask. Second subnet
would
> > in
> >> this case be
> >> 192.168.2.1 - 192.168.2.255 with 24 bit subnet mask Third subnet would
in
> >> this case be
> >> 192.168.3.1 - 192.168.3.255 with 24 bit subnet mask ....
> >> .
> >> .
> >> .
> >> 192.168.26.1 - 192.168.26.255 with 24 bit subnet mask
> >> .
> >> .
> >> .
> >> 192.168.255.1 - 192.168.255.255 with 24 bit subnet mask.
> >>
> >> In this case computers and devices in 192.168.1.x network will need a
> >> gateway on 192.168.1.x subnet. Computers and devices in 192.168.2.x
> > network
> >> will need their gateway on 192.168.2.x subnet or will not be able to
> > connect
> >> to 192.168.1.x network (or anything outside 192.168.2.x network). And
> >> computers and devices in 192.168.26.x network will need their gateway
on
> >> 192.168.26.x subnet...
> >>
> >> Gateway _must_ always be on same subnet as computers/devices are...
> >>
> >> If you have a server with 3 NIC with IPs 192.168.1.1 and 192.168.2.1
and
> >> 192.168.26.1 this server will be able to connect to all three networks
> > (but
> >> only this server/device). It will use information from the NIC to build
a
> >> routing table.
> >>
> >> Such servers (and Windows computer) can have only one default gateway.
> > This
> >> would be the NIC that leads e.g. to the internet. E.g. if your NIC
> >> 192.168.1.1 would be connected to the router that lead to the internet
> > this
> >> NIC would have a gateway.
> >>
> >> Mike
> >>
> >> "andrew" <kc2ine@yahoo.com> wrote in message
> >> news:OsVm8RBtEHA.3052@tk2msftngp13.phx.gbl...
> >> > hi,
> >> > I have 2 network 192.168.1.1 and 192.168.26.1 connected together by
> >> router.
> >> > On first server 192.168.1.1 I have additional NIC 192.168.2.1 which
is
> >> used
> >> > by some
> >> > device. From 192.168.1.1 I can access that device since I checked IP
> >> routing
> >> > on that sever
> >> > and use 192.168.1.1 as a gateway, but I cannot access that device
from
> > the
> >> > second 192.168.26.1 network. Can somebody help? I cannot use the
same
> >> > gateway since this is different network.
> >> >
> >> >
> >>
> >>
> >
> >
>
>
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