RRAS routing problem

Microsoft Windows server 2003 r2 standar...
July 8, 2010 at 04:08:36
Specs: Windows 2003 R2, Xeon E5410 CPU 8GB RAM
OK - here goes
Two subnets and
The .0.0 subnet is based in one building and the 20.0 in another. They're connected by a dedicated 10mb line. Routing is done (for now at least) using RRAS on a 2003 server located in the building with the 20.0 subnet. All was working fine until about 10:15 yesterday when the RRAS server suddenly stopped letting workstations on the 20.0 subnet talk to the email server on 0.0. Tracert stops everything at the RRAS server on its 20.0 IP.
The RRAS server itself can ping everything on both subnets. The only thing on the 0.0 subnet that can be pinged from a 20.0 address is the second lan card on the RRAS server which is on the 0.0 subnet.

Hope that's not too much to take in.

No idea why it stopped working as no changes were being made at the time.

What I have done to resolve this:
Restarted the RRAS service
Restarted the server running the RRAS service
Rebooted an affected workstation - all to no avail

My knowledge of routing stops there and the person who knows is on holiday and not contactable.

I know the link is up because the RRAS server can ping across it plus I have an IP phone that goes over the link and that still works (bizzarely the phone is on the 20.0 subnet so I may be wrong about what link it is using).

I know the email server on the 0.0 subnet is working because we can access it over OWA

So - any ideas where I go from here?
Treat me as a routing novice (although I've been working with PCs for twenty years)

Thanks in advance

See More: RRAS routing problem

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July 8, 2010 at 05:59:52
I would start with the event viewer & error messages. Also if there were any automatic updates, such as Norton, (yuk) they can change firewall settings.

How do you know when a politician is lying? His mouth is moving.

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July 8, 2010 at 06:51:55
Indeed - I should have mentioned that there are no relevant errors in any logs on any of the affected PCs. Windows updates are turned off. There are no software firewalls in place on any of the PCs

Oh and FWIW we don't use Norton except on laptops ;)

Thanks for the reply...

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July 8, 2010 at 09:29:05
Does the term "affected PCs" include the event viewer of the server itself?



There are two other threads discussing the same problem.

I guess you already saw the suggestion to use Wireshark on your other post.

How do you know when a politician is lying? His mouth is moving.

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