How to connect to two LANs?

[Dima]

Hello
How to connect one RJ-45 cable from a LAN to my Windows 2000 computer
and one outlet from another LAN to my computer and to another computer
for my compuer to use resources of both LAN's and the other computer
use only the second LAN? I have one installed Network Card and a
Network Switch - 3Com OfficeConnect Switch 8.
I can get access to both networks interchangeably now by inserting the
RJ-45 cables to my installed NIC. IP address and address of DNS-server
are got automatically in TCP/IP properties. How to get access to both
networks at the same time?
What is a cheaper way to get resources of the both networks for my
computer?

 

[Simon]

Hello
How to connect one RJ-45 cable from a LAN to my Windows 2000 computer
and one outlet from another LAN to my computer and to another computer
for my compuer to use resources of both LAN's and the other computer
use only the second LAN? I have one installed Network Card and a
Network Switch - 3Com OfficeConnect Switch 8.
I can get access to both networks interchangeably now by inserting the
RJ-45 cables to my installed NIC. IP address and address of DNS-server
are got automatically in TCP/IP properties. How to get access to both
networks at the same time?
What is a cheaper way to get resources of the both networks for my
computer?

Change all the PCs IP addresses to be on the same subnet then connect
them all to the switch.

Simon

 

[Justice]

Hello
How to connect one RJ-45 cable from a LAN to my Windows 2000 computer
and one outlet from another LAN to my computer and to another computer
for my compuer to use resources of both LAN's and the other computer
use only the second LAN? I have one installed Network Card and a
Network Switch - 3Com OfficeConnect Switch 8.
I can get access to both networks interchangeably now by inserting the
RJ-45 cables to my installed NIC. IP address and address of DNS-server
are got automatically in TCP/IP properties. How to get access to both
networks at the same time?
What is a cheaper way to get resources of the both networks for my
computer?

to acsess 2 LANS you will need a gateway to allow your computer acsess
to these lan's recorces.

 

[jaster]

Hello
How to connect one RJ-45 cable from a LAN to my Windows 2000 computer and
one outlet from another LAN to my computer and to another computer for my
compuer to use resources of both LAN's and the other computer use only the
second LAN? I have one installed Network Card and a Network Switch - 3Com
OfficeConnect Switch 8. I can get access to both networks interchangeably
now by inserting the RJ-45 cables to my installed NIC. IP address and
address of DNS-server are got automatically in TCP/IP properties. How to
get access to both networks at the same time?
What is a cheaper way to get resources of the both networks for my
computer?

I don't understand your question basic switches only know MAC addresses.
So you should be able to access both networks if they are connected by the
same switch.

Maybe what is happening is there's no definition to the switch of where
these networks are located? You could define the where to find each
network by adding route statements or defining host names in the hosts
files. I'd also reserve IP addresses by MAC addresses in my DHCP server.

IIRC
on win2k
route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.0.1

otherlan
route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.1.1

 

[Dima]

I sould not change all the PCs IP addresses to be on the same subnet.

 

[Dima]

Will connecting both networks by the same switch cause problems to any
of the networks?
My Switch has only one "Uplink" outlet, which I connect to one of the
networks. Should I connect the other network to any other outlet on the
Switch?

 

[Dima]

Why will not 3Com OfficeConnect Switch 8 be enough?

 

[Dima]

What do you mean by the gateway?

 

[jaster]

I sould not change all the PCs IP addresses to be on the same subnet.

That would be the easiest solution.

 

[jaster]

Will connecting both networks by the same switch cause problems to any of
the networks?

No that's what switches do. Outbound traffic is broadcast out all ports
until a port answers then all traffic for that port is switch to that
port. So how does a port know an IP address belongs to a port? From the
clients on that port.

My Switch has only one "Uplink" outlet, which I connect to one of the
networks. Should I connect the other network to any other outlet on the
Switch?

Uplink outlets are intended to link another switch, router or hub to a
switch. Two switches should be connected only to the Uplink ports.

 

[jaster]

Why will not 3Com OfficeConnect Switch 8 be enough?

Should be enough.

 

[jaster]

What do you mean by the gateway?

Usually gateway is the outbound distribution point like a router or
your ISP. Normally gateways have IP addresses.

 

[digisol]

Having run 17 PC's all through the one 4 port ADSL modem with two ADS
routers in the middle the basics are very simple, all systems ar
seperate and can be on different web pages at the same time with n
problems at all

I would suggest you use a multiple port modem if using ADSL or
suitable hub / switch "call it whatever you will" if using dial up

My initial setup was via a std telstra ADSL 4 port modem, two outlet
are lost which go to the inputs on the 2 X 8 port D-Link Router
giving me 18 active ports, two are lost as outlets from the modem
depending on how many ports are in your modem and router/s ports ar
the variables

Most use a single port modem so it's up to your router outlets, I ha
gone for the 4 port modem having only 4 systems at time of purchase
of course the farm grew quickly

No speed was lost on any PC doing different things at the same time

 

[Dima]

An outlet on a wall is a port of a switch, router or hub, is not it?
Therefore, should I connect it to the Uplink port on the switch too? If
yes, there will not be another Uplink port for the other network outlet.

 

[David Maynard]

An outlet on a wall is a port of a switch, router or hub, is not it?
Therefore, should I connect it to the Uplink port on the switch too? If
yes, there will not be another Uplink port for the other network outlet.

Where is it that you're trying to install switches and computers into
unknown networks and wall ports you don't know what they are or where they go?

 

[Dima]

I know that the outlets on a wall are ports of a switch. It was just
part of the discussion. It is far far away from you, in Russia.

 

[Dima]

An outlet on a wall is a port of a switch, router or hub. Therefore, I
should connect it to the Uplink port on the switch. And there will not
be another Uplink port for the other network outlet. How to connect the
other outlet on a wall to my switch?

 

[Dima]

Will not connecting two wall network outlets from the two networks to
my switch 3Com OfficeConnect Switch 8 cause problems to any of the
systems? I want to connect one outlet to an Uplink port on my switch
and the other to any other port on my switch. I want to get access to
the both networks through one NIC.

 

[Dima]

Why do I need a gateway to allow my computer acsess to these lan's
recorces?

 

[David Maynard]

Will not connecting two wall network outlets from the two networks to
my switch 3Com OfficeConnect Switch 8 cause problems to any of the
systems? I want to connect one outlet to an Uplink port on my switch
and the other to any other port on my switch. I want to get access to
the both networks through one NIC.

This was my point. You can't just willy nilly connect switches, routers,
and a 'single NIC' to separate networks.

If they're really separate networks then the NIC is going to have an IP
conflict on at least one of them because the network subnet is different.

If it's the same subnet then you're creating a loop, a routing no-no.

Not to mention you're screwing up the two networks because you're
connecting them to each other where they're not supposed to be connected.

You need two NICs if you want to connect to two different networks that way.