RAS routing problem

Hi there,

We have recently migrated from NT4 to WinServ 2003.

We have two subnets (10.0.1.0/24 and 10.0.0.0/24). We are able to talk
no problems between LAN computers in each subnet,

Server 10.0.1.6 is a Windows Server 2003 VPN server. When I connect to
this server with the VPN client (XP Pro) I have connectivity to both
subnets for about 10 seconds, then after that I can only connect to
subnet 10.0.1.0.

I notice in the VPN client's routing table this line appears after I
connect..

Network Destination Netmask Gateway Interface
Metric
10.0.0.0 255.0.0.0 10.0.1.56 10.0.1.56
1

But then after the 10 seconds it changes to:
10.0.1.0 255.255.255.0 10.0.1.56 10.0.1.56
1

Does anyone have any idea why the routing table changes itself on the
client after 10 seconds? I have tried connecting to the VPN server from
two different XP Pro PCs and the same thing happens on both.

The problem only started a day or so ago I think, and at the time I had
moved a Win2003 DC from the 10.0.1.0 subnet to the 10.0.0.0 subnet.
Maybe this is somehow related?

Any help would be much appreciated

Thanks!

Nev

The 10.0.0.0 255.0.0.0 is the one automatically set up by RAS. See KB
254231 . The extra one must come from the LAN after you connect. You will
probably need to monitor the traffic to see what does it. It could be from
DHCP or from a routing protocol (like RIP) .

"Nev George" <bowlingparking-(E-Mail Removed)> wrote in message
news:Xns955A154ED58F0bowling@207.46.248.16...
> Hi there,
>
> We have recently migrated from NT4 to WinServ 2003.
>
> We have two subnets (10.0.1.0/24 and 10.0.0.0/24). We are able to talk
> no problems between LAN computers in each subnet,
>
> Server 10.0.1.6 is a Windows Server 2003 VPN server. When I connect to
> this server with the VPN client (XP Pro) I have connectivity to both
> subnets for about 10 seconds, then after that I can only connect to
> subnet 10.0.1.0.
>
> I notice in the VPN client's routing table this line appears after I
> connect..
>
> Network Destination Netmask Gateway Interface
> Metric
> 10.0.0.0 255.0.0.0 10.0.1.56 10.0.1.56
> 1
>
> But then after the 10 seconds it changes to:
> 10.0.1.0 255.255.255.0 10.0.1.56 10.0.1.56
> 1
>
> Does anyone have any idea why the routing table changes itself on the
> client after 10 seconds? I have tried connecting to the VPN server from
> two different XP Pro PCs and the same thing happens on both.
>
> The problem only started a day or so ago I think, and at the time I had
> moved a Win2003 DC from the 10.0.1.0 subnet to the 10.0.0.0 subnet.
> Maybe this is somehow related?
>
> Any help would be much appreciated
>
> Thanks!
>
> Nev

hi Bill,

Thanks for your reply.

We don't have RIP or any other routing protocol enabled on the network.
We don't use the DHCP static route option (after you mentioned this I
tried using DHCP to assign a static route so the RAS client could reach
the 10.0.0.0 network, but it didnt work. LAN clients route tables are
updated with the static routes, but RAS clients route tables are not).

Yes the 10.0.0.0 255.0.0.0 is set up by RAS, but it _disappears_ after
some seconds and instead an entry for 10.0.1.0 255.255.255.0 appears.

Any other ideas?

Thanks

Nev



"Bill Grant" <not.available@online> wrote in
news:(E-Mail Removed):

> The 10.0.0.0 255.0.0.0 is the one automatically set up by RAS.
> See KB
> 254231 . The extra one must come from the LAN after you connect. You
> will probably need to monitor the traffic to see what does it. It
> could be from DHCP or from a routing protocol (like RIP) .
>
> "Nev George" <bowlingparking-(E-Mail Removed)> wrote in message
> news:Xns955A154ED58F0bowling@207.46.248.16...
>> Hi there,
>>
>> We have recently migrated from NT4 to WinServ 2003.
>>
>> We have two subnets (10.0.1.0/24 and 10.0.0.0/24). We are able to
>> talk no problems between LAN computers in each subnet,
>>
>> Server 10.0.1.6 is a Windows Server 2003 VPN server. When I connect
>> to this server with the VPN client (XP Pro) I have connectivity to
>> both subnets for about 10 seconds, then after that I can only connect
>> to subnet 10.0.1.0.
>>
>> I notice in the VPN client's routing table this line appears after I
>> connect..
>>
>> Network Destination Netmask Gateway Interface
>> Metric
>> 10.0.0.0 255.0.0.0 10.0.1.56 10.0.1.56
>> 1
>>
>> But then after the 10 seconds it changes to:
>> 10.0.1.0 255.255.255.0 10.0.1.56 10.0.1.56
>> 1
>>
>> Does anyone have any idea why the routing table changes itself on the
>> client after 10 seconds? I have tried connecting to the VPN server
>> from two different XP Pro PCs and the same thing happens on both.
>>
>> The problem only started a day or so ago I think, and at the time I
>> had moved a Win2003 DC from the 10.0.1.0 subnet to the 10.0.0.0
>> subnet. Maybe this is somehow related?
>>
>> Any help would be much appreciated
>>
>> Thanks!
>>
>> Nev
>
>
>

Not apart from monitoring the traffic on the link to see what sends the
change information.

"Nev George" <bowlingparking-(E-Mail Removed)> wrote in message
news:Xns955ADA6953371bowling@207.46.248.16...
> hi Bill,
>
> Thanks for your reply.
>
> We don't have RIP or any other routing protocol enabled on the network.
> We don't use the DHCP static route option (after you mentioned this I
> tried using DHCP to assign a static route so the RAS client could reach
> the 10.0.0.0 network, but it didnt work. LAN clients route tables are
> updated with the static routes, but RAS clients route tables are not).
>
> Yes the 10.0.0.0 255.0.0.0 is set up by RAS, but it _disappears_ after
> some seconds and instead an entry for 10.0.1.0 255.255.255.0 appears.
>
> Any other ideas?
>
> Thanks
>
> Nev
>
>
>
> "Bill Grant" <not.available@online> wrote in
> news:(E-Mail Removed):
>
> > The 10.0.0.0 255.0.0.0 is the one automatically set up by RAS.
> > See KB
> > 254231 . The extra one must come from the LAN after you connect. You
> > will probably need to monitor the traffic to see what does it. It
> > could be from DHCP or from a routing protocol (like RIP) .
> >
> > "Nev George" <bowlingparking-(E-Mail Removed)> wrote in message
> > news:Xns955A154ED58F0bowling@207.46.248.16...
> >> Hi there,
> >>
> >> We have recently migrated from NT4 to WinServ 2003.
> >>
> >> We have two subnets (10.0.1.0/24 and 10.0.0.0/24). We are able to
> >> talk no problems between LAN computers in each subnet,
> >>
> >> Server 10.0.1.6 is a Windows Server 2003 VPN server. When I connect
> >> to this server with the VPN client (XP Pro) I have connectivity to
> >> both subnets for about 10 seconds, then after that I can only connect
> >> to subnet 10.0.1.0.
> >>
> >> I notice in the VPN client's routing table this line appears after I
> >> connect..
> >>
> >> Network Destination Netmask Gateway Interface
> >> Metric
> >> 10.0.0.0 255.0.0.0 10.0.1.56 10.0.1.56
> >> 1
> >>
> >> But then after the 10 seconds it changes to:
> >> 10.0.1.0 255.255.255.0 10.0.1.56 10.0.1.56
> >> 1
> >>
> >> Does anyone have any idea why the routing table changes itself on the
> >> client after 10 seconds? I have tried connecting to the VPN server
> >> from two different XP Pro PCs and the same thing happens on both.
> >>
> >> The problem only started a day or so ago I think, and at the time I
> >> had moved a Win2003 DC from the 10.0.1.0 subnet to the 10.0.0.0
> >> subnet. Maybe this is somehow related?
> >>
> >> Any help would be much appreciated
> >>
> >> Thanks!
> >>
> >> Nev
> >
> >
> >
>