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MN-500 DHCP and default gateway

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November 15, 2004 8:30:24 PM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

I have an MN-500 configured to do DHCP service for my
computers. It is configured with the right default
gateway, but only one computer (I'll call it the first
computer) on the network gets the correct default
gateway.

The other computers get the first system (the one that
gets the correct default gateway) as their default
gateway -- rather than the one configured in the MN-500.

The only thing different about the first computer is that
it is dual-homed. It has a network interface with a
static ip and a route direct to the DSL modem -- in
addition to it's DHCP interface to the MN-500.

Any ideas?
Thx,
-Rick
November 16, 2004 3:24:51 AM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

Are you doing ICS on the multi-homed computer?

Rick wrote:

> I have an MN-500 configured to do DHCP service for my
> computers. It is configured with the right default
> gateway, but only one computer (I'll call it the first
> computer) on the network gets the correct default
> gateway.
>
> The other computers get the first system (the one that
> gets the correct default gateway) as their default
> gateway -- rather than the one configured in the MN-500.
>
> The only thing different about the first computer is that
> it is dual-homed. It has a network interface with a
> static ip and a route direct to the DSL modem -- in
> addition to it's DHCP interface to the MN-500.
>
> Any ideas?
> Thx,
> -Rick
Anonymous
November 16, 2004 5:26:50 PM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

Yes, here's a textual attempt at a description:

DSL-->{DSL Modem}-->{MS MN-150 switch}

Both the static ifx of the server and the MN-500 plug
into the MN-500 side-by-side.

All other computers plug into the MN-500.
There is a 2nd ifx on the server (DHCP) that goes from
the server to the MN-500.

As I said, the 2nd ifx on the server (the DHCP one) gets
the correct gateway. All of the other systems on the MN-
500 get the IP of the DHCP ifx on the server.

This actually works ok, but if the server is down, the
systems on the MN-500 can't get out.

-R

>-----Original Message-----
>Are you doing ICS on the multi-homed computer?
>
>Rick wrote:
>
>> I have an MN-500 configured to do DHCP service for my
>> computers. It is configured with the right default
>> gateway, but only one computer (I'll call it the first
>> computer) on the network gets the correct default
>> gateway.
>>
>> The other computers get the first system (the one that
>> gets the correct default gateway) as their default
>> gateway -- rather than the one configured in the MN-
500.
>>
>> The only thing different about the first computer is
that
>> it is dual-homed. It has a network interface with a
>> static ip and a route direct to the DSL modem -- in
>> addition to it's DHCP interface to the MN-500.
>>
>> Any ideas?
>> Thx,
>> -Rick
>.
>
Related resources
November 17, 2004 11:57:38 AM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

One question what is this ifx you keep referring to. I tried a google
search but it just pulled up a bunch of worthless information.

I also checked babel over at
http://www.geocities.com/ikind_babel/index.html & found no reference to
ifx. So what you typed is very confusing.

Also since you said you are Running Internet Connection Sharing on the
multi-homed computer are you running the MN-500 in bridge mode or router
mode. You will also have to explain the network better then
DSL --> DSL Modem --> MN-150

Because it doesn't say what comes after the MN-150 which is where it
seems the problem is.

anonymous@discussions.microsoft.com wrote:

> Yes, here's a textual attempt at a description:
>
> DSL-->{DSL Modem}-->{MS MN-150 switch}
>
> Both the static ifx of the server and the MN-500 plug
> into the MN-500 side-by-side.
>
> All other computers plug into the MN-500.
> There is a 2nd ifx on the server (DHCP) that goes from
> the server to the MN-500.
>
> As I said, the 2nd ifx on the server (the DHCP one) gets
> the correct gateway. All of the other systems on the MN-
> 500 get the IP of the DHCP ifx on the server.
>
> This actually works ok, but if the server is down, the
> systems on the MN-500 can't get out.
>
> -R
Anonymous
November 17, 2004 7:23:51 PM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

Answers in-line:

>One question what is this ifx you keep referring to. I
tried a google
>search but it just pulled up a bunch of worthless
information.
>
>I also checked babel over at
>http://www.geocities.com/ikind_babel/index.html & found
no reference to
>ifx. So what you typed is very confusing.

ifx is short for "interface", i.e. "network
interface", "ethernet interface", etc.

>Also since you said you are Running Internet Connection
Sharing on the
>multi-homed computer are you running the MN-500 in
bridge mode or router
>mode.

Routing mode. So it will firewall and serve DHCP to the
system connected to it.

>You will also have to explain the network better then
>DSL --> DSL Modem --> MN-150
>
>Because it doesn't say what comes after the MN-150 which
is where it
>seems the problem is.

The next sentence did. Here's another attempt at a
picture:

DSL -- DSL Modem -- MN-150 -- MN-500 -- 3 computers
| |
{public static addr} {private DHCP addr}
| |
[a server with two interfaces]

I have no idea if that will come out readable in html.

>anonymous@discussions.microsoft.com wrote:
>
>> Yes, here's a textual attempt at a description:
>>
>> DSL-->{DSL Modem}-->{MS MN-150 switch}
>>
>> Both the static ifx of the server and the MN-500 plug
>> into the MN-150 side-by-side.
>>
>> All other computers plug into the MN-500.
>> There is a 2nd ifx on the server (DHCP) that goes from
>> the server to the MN-500.
>>
>> As I said, the 2nd ifx on the server (the DHCP one)
gets
>> the correct gateway. All of the other systems on the
MN-
>> 500 get the IP of the DHCP ifx on the server.
>>
>> This actually works ok, but if the server is down, the
>> systems on the MN-500 can't get out.
>>
>> -R
>.
>
November 18, 2004 12:10:23 AM

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

So is the "computer 1" running ICS then?

If it is you will need to either stop doing ICS on it or change the
MN-500 into a bridge. This is because a computer running ICS is a DHCP
server & thus would create two DHCP servers causing major problems.

Also I see no reason to have that computer being connected in such a way.

One last thing did you purchase 2 IP addresses from your ISP as the
computer & MN-500 are both taking an IP address.

anonymous@discussions.microsoft.com wrote:

> The next sentence did. Here's another attempt at a
> picture:
>
> DSL -- DSL Modem -- MN-150 -- MN-500 -- 3 computers
> | |
> {public static addr} {private DHCP addr}
> | |
> [a server with two interfaces]
>
> I have no idea if that will come out readable in html.
!