IP Routing Tables



Johan Strange
07-10-2005, 01:53 AM
Hi,
Can someone offer any ideas on a routing scenario I have:

I have an XP Pro system that has 2 NICs and I need to route other PCs on the
LAN through this system. It is not the default gateway but is connected to an
Router that connects to another subnet. The registry entry EnableIPRouter
has its value set at 1. I have created a routing table and can ping the
network card on the second subnet but can not get any further than that. The
Local IP structure is 89.0.0.0/8 and I need to route to a network address of
172.0.0.0/28

The routing table for the PC with the two NICS is:
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.5 1
89.0.0.0 255.0.0.0 89.1.0.5 89.1.0.5 20
89.1.0.5 255.255.255.255 127.0.0.1 127.0.0.1 20
89.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
172.22.2.240 255.255.255.240 172.22.2.242 172.22.2.242 20
172.22.2.242 255.255.255.255 127.0.0.1 127.0.0.1 20
172.22.250.3 255.255.255.255 172.22.2.241 172.22.2.242 1
172.22.255.255 255.255.255.255 172.22.2.242 172.22.2.242 20
224.0.0.0 240.0.0.0 89.1.0.5 89.1.0.5 20
224.0.0.0 240.0.0.0 172.22.2.242 172.22.2.242 20
255.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 1
255.255.255.255 255.255.255.255 172.22.2.242 172.22.2.242 1
Default Gateway: 89.1.1.6

The client is:
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.141 30
89.0.0.0 255.0.0.0 89.1.0.141 89.1.0.141 30
89.1.0.141 255.255.255.255 127.0.0.1 127.0.0.1 30
89.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 30
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
172.22.2.240 255.255.255.240 89.1.0.5 89.1.0.141 20
172.22.2.242 255.255.255.255 89.1.0.5 89.1.0.141 20
172.22.250.3 255.255.255.255 89.1.0.5 89.1.0.141 1
172.22.250.255 255.255.255.255 89.1.0.5 89.1.0.141 20
172.22.255.255 255.255.255.255 89.1.0.5 89.1.0.141 20
224.0.0.0 240.0.0.0 89.1.0.141 89.1.0.141 30
255.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 1
Default Gateway: 89.1.1.6

Any ideas would be great.

BRGDS

Johan

Doug Sherman [MVP]
07-10-2005, 01:53 AM
It looks like you have configured the 89.1.0.141 client with a correct
static route to the 172.0.0.0/28 network. However, if the 172.0.0.0/28
machines are not using the XP Pro machine as a default gateway, they need a
static route to the 89.0.0.0/8 network. IE. your ping request is probably
reaching a 172.0.0.0/28 machine but that machine does not know where to
send the echo response.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

"Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in message
news:8D0EBF99-5E9F-45E6-9A0F-21F48903A334@microsoft.com...
> Hi,
> Can someone offer any ideas on a routing scenario I have:
>
> I have an XP Pro system that has 2 NICs and I need to route other PCs on
the
> LAN through this system. It is not the default gateway but is connected to
an
> Router that connects to another subnet. The registry entry EnableIPRouter
> has its value set at 1. I have created a routing table and can ping the
> network card on the second subnet but can not get any further than that.
The
> Local IP structure is 89.0.0.0/8 and I need to route to a network address
of
> 172.0.0.0/28
>
> The routing table for the PC with the two NICS is:
> Active Routes:
> Network Destination Netmask Gateway Interface
Metric
> 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.5 1
> 89.0.0.0 255.0.0.0 89.1.0.5 89.1.0.5 20
> 89.1.0.5 255.255.255.255 127.0.0.1 127.0.0.1 20
> 89.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 20
> 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
> 172.22.2.240 255.255.255.240 172.22.2.242 172.22.2.242 20
> 172.22.2.242 255.255.255.255 127.0.0.1 127.0.0.1 20
> 172.22.250.3 255.255.255.255 172.22.2.241 172.22.2.242 1
> 172.22.255.255 255.255.255.255 172.22.2.242 172.22.2.242 20
> 224.0.0.0 240.0.0.0 89.1.0.5 89.1.0.5 20
> 224.0.0.0 240.0.0.0 172.22.2.242 172.22.2.242 20
> 255.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 1
> 255.255.255.255 255.255.255.255 172.22.2.242 172.22.2.242 1
> Default Gateway: 89.1.1.6
>
> The client is:
> Active Routes:
> Network Destination Netmask Gateway Interface
Metric
> 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.141 30
> 89.0.0.0 255.0.0.0 89.1.0.141 89.1.0.141 30
> 89.1.0.141 255.255.255.255 127.0.0.1 127.0.0.1 30
> 89.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 30
> 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
> 172.22.2.240 255.255.255.240 89.1.0.5 89.1.0.141 20
> 172.22.2.242 255.255.255.255 89.1.0.5 89.1.0.141 20
> 172.22.250.3 255.255.255.255 89.1.0.5 89.1.0.141 1
> 172.22.250.255 255.255.255.255 89.1.0.5 89.1.0.141 20
> 172.22.255.255 255.255.255.255 89.1.0.5 89.1.0.141 20
> 224.0.0.0 240.0.0.0 89.1.0.141 89.1.0.141 30
> 255.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 1
> Default Gateway: 89.1.1.6
>
> Any ideas would be great.
>
> BRGDS
>
> Johan
>
>

Johan Strange
07-10-2005, 01:53 AM
Thanks Doug, basically then the 172.0.0.0/28 NIC connects to a router that
connects to an ADSL line. The XP system with the two NICS can reply the PING
to the 89.0.0.0/8 network so the answer must be with the Router config then
as I can not get a ping reply from there.

Would you agree ?

BRGDS Johan

"Doug Sherman [MVP]" wrote:

> It looks like you have configured the 89.1.0.141 client with a correct
> static route to the 172.0.0.0/28 network. However, if the 172.0.0.0/28
> machines are not using the XP Pro machine as a default gateway, they need a
> static route to the 89.0.0.0/8 network. IE. your ping request is probably
> reaching a 172.0.0.0/28 machine but that machine does not know where to
> send the echo response.
>
> Doug Sherman
> MCSE, MCSA, MCP+I, MVP
>
> "Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in message
> news:8D0EBF99-5E9F-45E6-9A0F-21F48903A334@microsoft.com...
> > Hi,
> > Can someone offer any ideas on a routing scenario I have:
> >
> > I have an XP Pro system that has 2 NICs and I need to route other PCs on
> the
> > LAN through this system. It is not the default gateway but is connected to
> an
> > Router that connects to another subnet. The registry entry EnableIPRouter
> > has its value set at 1. I have created a routing table and can ping the
> > network card on the second subnet but can not get any further than that.
> The
> > Local IP structure is 89.0.0.0/8 and I need to route to a network address
> of
> > 172.0.0.0/28
> >
> > The routing table for the PC with the two NICS is:
> > Active Routes:
> > Network Destination Netmask Gateway Interface
> Metric
> > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.5 1
> > 89.0.0.0 255.0.0.0 89.1.0.5 89.1.0.5 20
> > 89.1.0.5 255.255.255.255 127.0.0.1 127.0.0.1 20
> > 89.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 20
> > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
> > 172.22.2.240 255.255.255.240 172.22.2.242 172.22.2.242 20
> > 172.22.2.242 255.255.255.255 127.0.0.1 127.0.0.1 20
> > 172.22.250.3 255.255.255.255 172.22.2.241 172.22.2.242 1
> > 172.22.255.255 255.255.255.255 172.22.2.242 172.22.2.242 20
> > 224.0.0.0 240.0.0.0 89.1.0.5 89.1.0.5 20
> > 224.0.0.0 240.0.0.0 172.22.2.242 172.22.2.242 20
> > 255.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5 1
> > 255.255.255.255 255.255.255.255 172.22.2.242 172.22.2.242 1
> > Default Gateway: 89.1.1.6
> >
> > The client is:
> > Active Routes:
> > Network Destination Netmask Gateway Interface
> Metric
> > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.141 30
> > 89.0.0.0 255.0.0.0 89.1.0.141 89.1.0.141 30
> > 89.1.0.141 255.255.255.255 127.0.0.1 127.0.0.1 30
> > 89.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 30
> > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
> > 172.22.2.240 255.255.255.240 89.1.0.5 89.1.0.141 20
> > 172.22.2.242 255.255.255.255 89.1.0.5 89.1.0.141 20
> > 172.22.250.3 255.255.255.255 89.1.0.5 89.1.0.141 1
> > 172.22.250.255 255.255.255.255 89.1.0.5 89.1.0.141 20
> > 172.22.255.255 255.255.255.255 89.1.0.5 89.1.0.141 20
> > 224.0.0.0 240.0.0.0 89.1.0.141 89.1.0.141 30
> > 255.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141 1
> > Default Gateway: 89.1.1.6
> >
> > Any ideas would be great.
> >
> > BRGDS
> >
> > Johan
> >
> >
>
>
>

Doug Sherman [MVP]
07-10-2005, 01:53 AM
It's the same issue. Neither the router nor the 172.0.0.0/28 machines know
where to send packets destined for the 89.0.0.0/8 network. If the
172.0.0.0/28 machines use the router's IP as a default gateway, then you can
configure a static route on the router - assuming that the router supports
static routes - consult your manual. You need a static route for the
89.0.0.0/8 network with a gateway of 172.22.2.242.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

"Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in message
news:DFFBC478-D57D-4529-A2A0-BD8D95ECAECC@microsoft.com...
> Thanks Doug, basically then the 172.0.0.0/28 NIC connects to a router that
> connects to an ADSL line. The XP system with the two NICS can reply the
PING
> to the 89.0.0.0/8 network so the answer must be with the Router config
then
> as I can not get a ping reply from there.
>
> Would you agree ?
>
> BRGDS Johan
>
> "Doug Sherman [MVP]" wrote:
>
> > It looks like you have configured the 89.1.0.141 client with a correct
> > static route to the 172.0.0.0/28 network. However, if the 172.0.0.0/28
> > machines are not using the XP Pro machine as a default gateway, they
need a
> > static route to the 89.0.0.0/8 network. IE. your ping request is
probably
> > reaching a 172.0.0.0/28 machine but that machine does not know where to
> > send the echo response.
> >
> > Doug Sherman
> > MCSE, MCSA, MCP+I, MVP
> >
> > "Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in
message
> > news:8D0EBF99-5E9F-45E6-9A0F-21F48903A334@microsoft.com...
> > > Hi,
> > > Can someone offer any ideas on a routing scenario I have:
> > >
> > > I have an XP Pro system that has 2 NICs and I need to route other PCs
on
> > the
> > > LAN through this system. It is not the default gateway but is
connected to
> > an
> > > Router that connects to another subnet. The registry entry
EnableIPRouter
> > > has its value set at 1. I have created a routing table and can ping
the
> > > network card on the second subnet but can not get any further than
that.
> > The
> > > Local IP structure is 89.0.0.0/8 and I need to route to a network
address
> > of
> > > 172.0.0.0/28
> > >
> > > The routing table for the PC with the two NICS is:
> > > Active Routes:
> > > Network Destination Netmask Gateway Interface
> > Metric
> > > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.5
1
> > > 89.0.0.0 255.0.0.0 89.1.0.5 89.1.0.5
20
> > > 89.1.0.5 255.255.255.255 127.0.0.1 127.0.0.1
20
> > > 89.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5
20
> > > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
1
> > > 172.22.2.240 255.255.255.240 172.22.2.242 172.22.2.242
20
> > > 172.22.2.242 255.255.255.255 127.0.0.1 127.0.0.1
20
> > > 172.22.250.3 255.255.255.255 172.22.2.241 172.22.2.242
1
> > > 172.22.255.255 255.255.255.255 172.22.2.242 172.22.2.242
20
> > > 224.0.0.0 240.0.0.0 89.1.0.5 89.1.0.5
20
> > > 224.0.0.0 240.0.0.0 172.22.2.242 172.22.2.242
20
> > > 255.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5
1
> > > 255.255.255.255 255.255.255.255 172.22.2.242 172.22.2.242
1
> > > Default Gateway: 89.1.1.6
> > >
> > > The client is:
> > > Active Routes:
> > > Network Destination Netmask Gateway Interface
> > Metric
> > > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.141
30
> > > 89.0.0.0 255.0.0.0 89.1.0.141 89.1.0.141
30
> > > 89.1.0.141 255.255.255.255 127.0.0.1 127.0.0.1
30
> > > 89.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141
30
> > > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
1
> > > 172.22.2.240 255.255.255.240 89.1.0.5 89.1.0.141
20
> > > 172.22.2.242 255.255.255.255 89.1.0.5 89.1.0.141
20
> > > 172.22.250.3 255.255.255.255 89.1.0.5 89.1.0.141
1
> > > 172.22.250.255 255.255.255.255 89.1.0.5 89.1.0.141
20
> > > 172.22.255.255 255.255.255.255 89.1.0.5 89.1.0.141
20
> > > 224.0.0.0 240.0.0.0 89.1.0.141 89.1.0.141
30
> > > 255.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141
1
> > > Default Gateway: 89.1.1.6
> > >
> > > Any ideas would be great.
> > >
> > > BRGDS
> > >
> > > Johan
> > >
> > >
> >
> >
> >

Johan Strange
07-10-2005, 01:53 AM
Cool, thanks for the help.

"Doug Sherman [MVP]" wrote:

> It's the same issue. Neither the router nor the 172.0.0.0/28 machines know
> where to send packets destined for the 89.0.0.0/8 network. If the
> 172.0.0.0/28 machines use the router's IP as a default gateway, then you can
> configure a static route on the router - assuming that the router supports
> static routes - consult your manual. You need a static route for the
> 89.0.0.0/8 network with a gateway of 172.22.2.242.
>
> Doug Sherman
> MCSE, MCSA, MCP+I, MVP
>
> "Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in message
> news:DFFBC478-D57D-4529-A2A0-BD8D95ECAECC@microsoft.com...
> > Thanks Doug, basically then the 172.0.0.0/28 NIC connects to a router that
> > connects to an ADSL line. The XP system with the two NICS can reply the
> PING
> > to the 89.0.0.0/8 network so the answer must be with the Router config
> then
> > as I can not get a ping reply from there.
> >
> > Would you agree ?
> >
> > BRGDS Johan
> >
> > "Doug Sherman [MVP]" wrote:
> >
> > > It looks like you have configured the 89.1.0.141 client with a correct
> > > static route to the 172.0.0.0/28 network. However, if the 172.0.0.0/28
> > > machines are not using the XP Pro machine as a default gateway, they
> need a
> > > static route to the 89.0.0.0/8 network. IE. your ping request is
> probably
> > > reaching a 172.0.0.0/28 machine but that machine does not know where to
> > > send the echo response.
> > >
> > > Doug Sherman
> > > MCSE, MCSA, MCP+I, MVP
> > >
> > > "Johan Strange" <JohanStrange@discussions.microsoft.com> wrote in
> message
> > > news:8D0EBF99-5E9F-45E6-9A0F-21F48903A334@microsoft.com...
> > > > Hi,
> > > > Can someone offer any ideas on a routing scenario I have:
> > > >
> > > > I have an XP Pro system that has 2 NICs and I need to route other PCs
> on
> > > the
> > > > LAN through this system. It is not the default gateway but is
> connected to
> > > an
> > > > Router that connects to another subnet. The registry entry
> EnableIPRouter
> > > > has its value set at 1. I have created a routing table and can ping
> the
> > > > network card on the second subnet but can not get any further than
> that.
> > > The
> > > > Local IP structure is 89.0.0.0/8 and I need to route to a network
> address
> > > of
> > > > 172.0.0.0/28
> > > >
> > > > The routing table for the PC with the two NICS is:
> > > > Active Routes:
> > > > Network Destination Netmask Gateway Interface
> > > Metric
> > > > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.5
> 1
> > > > 89.0.0.0 255.0.0.0 89.1.0.5 89.1.0.5
> 20
> > > > 89.1.0.5 255.255.255.255 127.0.0.1 127.0.0.1
> 20
> > > > 89.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5
> 20
> > > > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
> 1
> > > > 172.22.2.240 255.255.255.240 172.22.2.242 172.22.2.242
> 20
> > > > 172.22.2.242 255.255.255.255 127.0.0.1 127.0.0.1
> 20
> > > > 172.22.250.3 255.255.255.255 172.22.2.241 172.22.2.242
> 1
> > > > 172.22.255.255 255.255.255.255 172.22.2.242 172.22.2.242
> 20
> > > > 224.0.0.0 240.0.0.0 89.1.0.5 89.1.0.5
> 20
> > > > 224.0.0.0 240.0.0.0 172.22.2.242 172.22.2.242
> 20
> > > > 255.255.255.255 255.255.255.255 89.1.0.5 89.1.0.5
> 1
> > > > 255.255.255.255 255.255.255.255 172.22.2.242 172.22.2.242
> 1
> > > > Default Gateway: 89.1.1.6
> > > >
> > > > The client is:
> > > > Active Routes:
> > > > Network Destination Netmask Gateway Interface
> > > Metric
> > > > 0.0.0.0 0.0.0.0 89.1.1.6 89.1.0.141
> 30
> > > > 89.0.0.0 255.0.0.0 89.1.0.141 89.1.0.141
> 30
> > > > 89.1.0.141 255.255.255.255 127.0.0.1 127.0.0.1
> 30
> > > > 89.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141
> 30
> > > > 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
> 1
> > > > 172.22.2.240 255.255.255.240 89.1.0.5 89.1.0.141
> 20
> > > > 172.22.2.242 255.255.255.255 89.1.0.5 89.1.0.141
> 20
> > > > 172.22.250.3 255.255.255.255 89.1.0.5 89.1.0.141
> 1
> > > > 172.22.250.255 255.255.255.255 89.1.0.5 89.1.0.141
> 20
> > > > 172.22.255.255 255.255.255.255 89.1.0.5 89.1.0.141
> 20
> > > > 224.0.0.0 240.0.0.0 89.1.0.141 89.1.0.141
> 30
> > > > 255.255.255.255 255.255.255.255 89.1.0.141 89.1.0.141
> 1
> > > > Default Gateway: 89.1.1.6
> > > >
> > > > Any ideas would be great.
> > > >
> > > > BRGDS
> > > >
> > > > Johan
> > > >
> > > >
> > >
> > >
> > >
>
>
>


IP Routing Tables