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dual nics --- one problem:routing to wrong nic

 
 
Chris Moore
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      11-15-2004, 05:27 PM
Enviro:
MS Server 2003
Each server has 2 nics.
Static IPs inside and out (both NATted behind a firewall)


Inside for admin and backup purposes and outside nic for web
application. In our load testing we notice that the pages being
requested regularly drop down to zero as the server attempts to route
that data to the inside (no request from the inside for that data,
btw). After a timeout it goes back to routing the data to the outside
nic. How do I force the server not to attempt to route the data to the
inside nic?

Chris
 
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Steven L Umbach
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      11-15-2004, 08:49 PM
This may help. In network connections/advanced/advanced properties make sure
that the nic for the lan is at top of the list. Then make sure that only the
external nic is configured with the default gateway. --- Steve


"Chris Moore" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Enviro:
> MS Server 2003
> Each server has 2 nics.
> Static IPs inside and out (both NATted behind a firewall)
>
>
> Inside for admin and backup purposes and outside nic for web
> application. In our load testing we notice that the pages being
> requested regularly drop down to zero as the server attempts to route
> that data to the inside (no request from the inside for that data,
> btw). After a timeout it goes back to routing the data to the outside
> nic. How do I force the server not to attempt to route the data to the
> inside nic?
>
> Chris



 
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Phillip Windell
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      11-16-2004, 03:20 PM
Hey! Made it back in one piece eh?!
It was good to get home,..I slept most of the weekend.

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com


"Steven L Umbach" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> This may help. In network connections/advanced/advanced properties make

sure
> that the nic for the lan is at top of the list. Then make sure that only

the
> external nic is configured with the default gateway. --- Steve
>
>
> "Chris Moore" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) om...
> > Enviro:
> > MS Server 2003
> > Each server has 2 nics.
> > Static IPs inside and out (both NATted behind a firewall)
> >
> >
> > Inside for admin and backup purposes and outside nic for web
> > application. In our load testing we notice that the pages being
> > requested regularly drop down to zero as the server attempts to route
> > that data to the inside (no request from the inside for that data,
> > btw). After a timeout it goes back to routing the data to the outside
> > nic. How do I force the server not to attempt to route the data to the
> > inside nic?
> >
> > Chris

>
>



 
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Steven L Umbach
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Posts: n/a

 
      11-17-2004, 12:03 AM
Yep! Back to normal is good. --- Steve

"Phillip Windell" <@.> wrote in message
news:%23uCvyg$(E-Mail Removed)...
> Hey! Made it back in one piece eh?!
> It was good to get home,..I slept most of the weekend.
>
> --
>
> Phillip Windell [MCP, MVP, CCNA]
> www.wandtv.com
>
>
> "Steven L Umbach" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> This may help. In network connections/advanced/advanced properties make

> sure
>> that the nic for the lan is at top of the list. Then make sure that only

> the
>> external nic is configured with the default gateway. --- Steve
>>
>>
>> "Chris Moore" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed) om...
>> > Enviro:
>> > MS Server 2003
>> > Each server has 2 nics.
>> > Static IPs inside and out (both NATted behind a firewall)
>> >
>> >
>> > Inside for admin and backup purposes and outside nic for web
>> > application. In our load testing we notice that the pages being
>> > requested regularly drop down to zero as the server attempts to route
>> > that data to the inside (no request from the inside for that data,
>> > btw). After a timeout it goes back to routing the data to the outside
>> > nic. How do I force the server not to attempt to route the data to the
>> > inside nic?
>> >
>> > Chris

>>
>>

>
>



 
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Chris Moore
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Posts: n/a

 
      11-17-2004, 12:52 AM
Steve,

Thanks for the info. I didn't see where I could make the NICs primary
and secondary but did make the gateway change and all seems to be
well. I do have one remaining question though: since this is a webapp
and I want to hang a SQL server off the second NIC (inside), is is
still possible for all the webapp servers (3 of them) to still
communicate to the SQL server on the inside without the gateway or
should I put in a static route?

C

"Phillip Windell" <@.> wrote in message news:<#uCvyg$(E-Mail Removed)>...
> Hey! Made it back in one piece eh?!
> It was good to get home,..I slept most of the weekend.
>
> --
>
> Phillip Windell [MCP, MVP, CCNA]
> www.wandtv.com
>
>
> "Steven L Umbach" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > This may help. In network connections/advanced/advanced properties make

> sure
> > that the nic for the lan is at top of the list. Then make sure that only

> the
> > external nic is configured with the default gateway. --- Steve
> >
> >
> > "Chris Moore" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed) om...
> > > Enviro:
> > > MS Server 2003
> > > Each server has 2 nics.
> > > Static IPs inside and out (both NATted behind a firewall)
> > >
> > >
> > > Inside for admin and backup purposes and outside nic for web
> > > application. In our load testing we notice that the pages being
> > > requested regularly drop down to zero as the server attempts to route
> > > that data to the inside (no request from the inside for that data,
> > > btw). After a timeout it goes back to routing the data to the outside
> > > nic. How do I force the server not to attempt to route the data to the
> > > inside nic?
> > >
> > > Chris

> >
> >

 
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Steven L Umbach
Guest
Posts: n/a

 
      11-17-2004, 02:27 AM
To find where to configure network adapter priority go to Control Panel -
network connections/advanced/advanced settings and look in adapters and
bindings to set the order.

A Windows computer can only use one default gateway at a time. Any others
listed are only for possible use via dead gateway detection in which case
the alternative gateway will be used when the primary one can not be
contacted. The downside is that when gateways change they stay used until it
can no longer be detected and then the other gateway is used again.

The server can be configured to route between networks that the adapters are
on via Remote Access Management Console as described in the link below.

http://www.jsiinc.com/SUBI/tip4100/rh4143.htm

You can confirm that is working by looking at the routing table with the
route print command and if you still need to add a static route you can with
the route add command using the -p switch to make it persistent but in your
case I believe it should work if routing is enabled on the server if you
need the networks on each adapter to communicate with each other.. ---
Steve


"Chris Moore" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Steve,
>
> Thanks for the info. I didn't see where I could make the NICs primary
> and secondary but did make the gateway change and all seems to be
> well. I do have one remaining question though: since this is a webapp
> and I want to hang a SQL server off the second NIC (inside), is is
> still possible for all the webapp servers (3 of them) to still
> communicate to the SQL server on the inside without the gateway or
> should I put in a static route?
>
> C
>
> "Phillip Windell" <@.> wrote in message
> news:<#uCvyg$(E-Mail Removed)>...
>> Hey! Made it back in one piece eh?!
>> It was good to get home,..I slept most of the weekend.
>>
>> --
>>
>> Phillip Windell [MCP, MVP, CCNA]
>> www.wandtv.com
>>
>>
>> "Steven L Umbach" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>> > This may help. In network connections/advanced/advanced properties make

>> sure
>> > that the nic for the lan is at top of the list. Then make sure that
>> > only

>> the
>> > external nic is configured with the default gateway. --- Steve
>> >
>> >
>> > "Chris Moore" <(E-Mail Removed)> wrote in message
>> > news:(E-Mail Removed) om...
>> > > Enviro:
>> > > MS Server 2003
>> > > Each server has 2 nics.
>> > > Static IPs inside and out (both NATted behind a firewall)
>> > >
>> > >
>> > > Inside for admin and backup purposes and outside nic for web
>> > > application. In our load testing we notice that the pages being
>> > > requested regularly drop down to zero as the server attempts to route
>> > > that data to the inside (no request from the inside for that data,
>> > > btw). After a timeout it goes back to routing the data to the outside
>> > > nic. How do I force the server not to attempt to route the data to
>> > > the
>> > > inside nic?
>> > >
>> > > Chris
>> >
>> >



 
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