Two nics, two ISP's

  • Thread starter Thread starter Phil
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Phil

Is it possible to serve webpages through IIS using two seperate nics on two
differnet subnets (using IP addresses)?

If so, how can I create a new subnet using my Linksys? It is presently set
at 255.255.255.0, I tried changing it to 255.255.255.128 but could no longer
access my router after making the change (I did change my computers subnet).
Does a subnet of 255.255.255.128 create a new range of private IP's?

Thank you
 
Phil said:
Is it possible to serve webpages through IIS using two seperate nics on two
differnet subnets (using IP addresses)?
Click to expand...

Yes, No, Maybe. It just isn't that simple.
If so, how can I create a new subnet using my Linksys? It is presently set
at 255.255.255.0, I tried changing it to 255.255.255.128 but could no
Click to expand...
longer

If the Linksys is one of those Cable/DSL Routers then no. Those are NAT
Devices, they are not *real* routers. It is unfortunate that "marketing" has
butchered the dictionary in this area so much. Multiple subnets requires a
real router with multiple LAN Interfaces,...and this has nothing to do with
the Internet or the Device that provides the Internet.

Once you have multiple subnets created, then, *in theory*, you can publish
multiple Sites by using the "static-nat" features of the Internet Sharing
Device (NAT Device). But this may not be as simple as that sounds.
 
Thanks for the reply. I'm using the same subnet mask on my Netscreen
firewall and a Linksys router with two nics and it seems to work fine. I can
access my default page from both IP addresses. I had read somewhere that
using two connections can cause DNS issues as some DNS servers may cache
results. As far as I can tell this should not be a problem considering I've
two nics in my machine.. correct? If someone attempts to send an email to a
failover address it will still arrive, as they are both connected all the
time. I was suprised to see that all of my apps worked fine with two nics,
mail, web etc.

Thank you
 
Phil said:
Thanks for the reply. I'm using the same subnet mask on my Netscreen
firewall and a Linksys router with two nics and it seems to work fine.
Click to expand...

That doesn't have anything to do with it. Every device on a network must
have same Mask or they wouldn't work.
I can
access my default page from both IP addresses. I had read somewhere that
using two connections can cause DNS issues as some DNS servers may cache
results. As far as I can tell this should not be a problem considering I've
two nics in my machine.. correct?
Click to expand...

Here are the multihomed issues. It is a lot to read,...will probably keep
you busy for a while:

175767 - Expected Behavior of Multiple Adapters on Same Network
http://support.microsoft.com/default.aspx?scid=kb;EN-US;175767

157025 - Default Gateway Configuration for Multihomed Computers
http://support.microsoft.com/default.aspx?scid=kb;en-us;157025&Product=win2000

272294 - Active Directory Communication Fails on Multihomed Domain
Controllers
http://support.microsoft.com/default.aspx?scid=kb;en-us;272294

191611 - Symptoms of Multihomed Browsers
http://support.microsoft.com/default.aspx?scid=kb;EN-US;191611

Microsoft Windows XP - Multihoming Considerations
http://www.microsoft.com/resources/documentation/windows/xp/all/reskit/en-us/prcc_tcp_qpzj.asp?
 
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