Intermittent outages on two subnets on 2003 server

Hi there,

Just wondering if anyone could help me with a problem we are
experiencing. We have a server running with two NICs on two seperate
subnets going out on two different VLANs. The firewall cannot route
between the two firewalls and we are working to try and get the
routing sorted.

I have a subnet on each NIC and intermittently we are having outages
on each subnet. I have a continuos ping running against each subnet
and there seems to be brief 5-10second outages on alternate ranges.
There doesnt seem to be any pattern between the issues.

We have websites running on each of the subnets and obviously the
sites go down when there is an issue.

Anyone any ideas?

 

"Fox1977" <foxj77@gmail.com> wrote in message
news:2c555fab-7ea5-4ab3-869f-9752112d19bb@a13g2000yqc.googlegroups.com...<!--coloro:blue--><span style="color:blue <!--/coloro-->
> Hi there,
>
> Just wondering if anyone could help me with a problem we are
> experiencing. We have a server running with two NICs on two seperate
> subnets going out on two different VLANs. The firewall cannot route
> between the two firewalls and we are working to try and get the
> routing sorted.
>
> I have a subnet on each NIC and intermittently we are having outages
> on each subnet. I have a continuos ping running against each subnet
> and there seems to be brief 5-10second outages on alternate ranges.
> There doesnt seem to be any pattern between the issues.
>
> We have websites running on each of the subnets and obviously the
> sites go down when there is an issue.
>
> Anyone any ideas?<!--colorc--><!--/colorc-->


I assume this is related to your other thread. I'm not sure if it is because
of the way you've configured the server (multiple NICs with multiple
gateways), or because of your routers/firewalls. If I may suggest, you said
you may have to wait for the new firewall to come in, in order to be able to
route between the subnets that you currently can't. That may be the
solution.

FYI - For anyone else that would like to help and attempt to diagnose this
for Fox1977, please refer to the original thread for more information
concerning the current setup and other info:
From: Fox1977 <foxj77@gmail.com>
Newsgroups: microsoft.public.windows.server.general
Subject: Changing default IP address when running server on two subnets?
Date: Tue, 14 Jul 2009 02:09:09 -0700 (PDT)
Organization:
Lines: 24

--
Ace

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Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
for regional support phone numbers.

 

Fox,
The server can be used as a router (except it is usually cheaper and easier
to buy a small router).
However I don't follow how it solves the problem you describe. You would
need to give some details to get a useful answer:
- what type of firewall?
- how many physical devices in each subnet? is there a switch somewhere?
- ipconfig /all for the server/router (and perhaps "route print" as well)
- its a web server: how many web sites? why so many IP's?
Anthony




"Fox1977" <foxj77@gmail.com> wrote in message
news:2c555fab-7ea5-4ab3-869f-9752112d19bb@a13g2000yqc.googlegroups.com...<!--coloro:blue--><span style="color:blue <!--/coloro-->
> Hi there,
>
> Just wondering if anyone could help me with a problem we are
> experiencing. We have a server running with two NICs on two seperate
> subnets going out on two different VLANs. The firewall cannot route
> between the two firewalls and we are working to try and get the
> routing sorted.
>
> I have a subnet on each NIC and intermittently we are having outages
> on each subnet. I have a continuos ping running against each subnet
> and there seems to be brief 5-10second outages on alternate ranges.
> There doesnt seem to be any pattern between the issues.
>
> We have websites running on each of the subnets and obviously the
> sites go down when there is an issue.
>
> Anyone any ideas? <!--colorc--><!--/colorc-->