Two IPs assigned to one card?

W

webmaster

We are currently putting in a new T1 from a new
provider. We are running them side by side for one month.

I tried to assign my nic card two IPs from both subnets
but it only uses one and never sees anything on the other
network.

I can remove either one and it works fine.

Is there any way to run these two IPs side by side on the
same card without installing a second card?

of course each IP is assigned a different gateway and net
mask (could it be because both net mask are the same?)

and each IP are from different IP blocks as well...
 
J

Jason Tsang

Not true

There is no limit to the number of IP addresses that can be configured. This
setting is useful if this computer connects to a single physical network but
requires advanced IP addressing because of either of the following reasons:

A single logical IP network is in use and this computer needs to use more
than one IP address to communicate on that network.
Multiple logical IP networks are in use and this computer needs a different
IP address to communicate with each of the different logical IP networks.

You can set the ip addresses in the TCP/IP properties in the advanced field.
 
C

cquirke (MVP Win9x)

On Tue, 4 May 2004 18:21:22 -0400, "Jason Tsang"
There is no limit to the number of IP addresses that can be configured. This
setting is useful if this computer connects to a single physical network but
requires advanced IP addressing because of either of the following reasons:
A single logical IP network is in use and this computer needs to use more
than one IP address to communicate on that network.
Multiple logical IP networks are in use and this computer needs a different
IP address to communicate with each of the different logical IP networks.
You can set the ip addresses in the TCP/IP properties in the advanced field.

Wow, I wonder if this will help with a scenario we have!

My client has:
- one ADSL router
- one dumb switch
- two PCs that are to do F&PS plus access 'net via router
- one or more PCs for public Internet use
- no / zero / zilch servers, servers OSs or desire for these!

His two "office" PCs are currently 9x, while the publics will be XP.
So I could do this on the office PCs...

TCP/IP on LAN -> no F&PS, Internet traffic only
NetBEUI on LAN -> F&PS

....and leave the public PCs in the dark, with no F&PS. I like this
because it means the PCs can all run firewalls and not screw up F&PS.

But this lasts only as long as the office PCs stay pre-XP, so I
thought; can I set the router to use two different internal
local/private IP addresses so that the office and public PCs can be on
different subnet masks, and both subnets can get 'net access?

Apparently not, because consumer ADSL routers can't do that etc. I
was told to add a second router and so on.

But from what you say, can I use two IP addresses in different subnets
for the "office" PCs, with the one in common with router and public
PCs carrying no F&PS, and the other just for F&PS?

Sorry such a long post - too tired to write a shorter one!


-------------------- ----- ---- --- -- - - - -
Tip Of The Day:
To disable the 'Tip of the Day' feature...
 
P

Phil \(purplehaz\)

Hmmm........ thanks for the info. I knew you could set up ips in the
advanced area, but didn't know it could use more than one at a time. I
always thought it was one or the other. Thanks for the info.
 
G

Guest

Yes, I did add the second IP in the advanced area, added
the netmask and even the gate way for that IP...

but it only seems to use one IP and ignores the other.
what can I do to start tracing the problem?

this works great on NT but doesn't work so good on xp it
seems?
 

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