Re: (ASCEND) Max 1800 to WinNT routing

[Randy Martin <ascend@austintx.net>]

At 02:32 PM 4/28/2000 -0400, you wrote:
> > Unfortunately, with NT as a router, you have to take special steps to get
> > things to work.  NT can not route between 2 interfaces that are on the same
> > subnet (or the same class-c).  Here's a profile that will work with NT:
>
>2 interfaces on the same subnet? I wouldn't expect that to work with _any_
>router, let alone Windows!

By "2 interfaces on the same subnet", I assume you mean two ethernet cards 
with IPs on the same subnet, right? I ask because I setup NT server boxes 
all the time with internal ISDN adapters and ethernet cards with IP 
addresses on the same subnet. All you have to do to get the routing to work 
is setup a 0.0.0.0 route in RRAS that uses the IP address assigned to the 
ISDN adapter as the gateway. It works perfectly.

For example, suppose you subnet 8 IPs to a downstream customer, lets just 
say xxx.xxx.xxx.16/29 for example. Then you setup the profile in the MAX to 
always give his "router" xxx.xxx.xxx.17/29 as the LAN Adrs. Then you give 
the server that has the ISDN adapter xxx.xxx.xxx.18 on the ethernet card 
with a net mask of 255.255.255.248 AND NO GATEWAY. Then you assign the 
other IPs in the subnet to the various other computers with GATEWAYS of 
xxx.xxx.xxx.18 (the IP address of the ethernet card on the server).

This causes the network to route internally just fine. The only thing you 
have left to do is create a static route in RRAS on the server as follows:

destination: 0.0.0.0
netmask:     0.0.0.0
gateway:     xxx.xxx.xxx.17
interface:   ISDN adapter

This works just fine on NT. This is two interfaces on the same subnet, as 
far as I'm concerned.

Just my 2-cents-worth.

Regards,
Randy

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