routing problem.

[Guest]

I have a routing issue, please help. I've configured
win2k server to be multihomed, w/ 3 nics. RRAS is already
enabled. the first nic is connected to ISP router and the
other 2 nics are 2 local segments. the clients from 2
local segments can ping each other but it can't ping the
isp router.

1st nic: ip 192.168.1.10 mask 255.255.255.0 gw 192.168.1.1
2nd nic: ip 192.168.2.10 mask 255.255.255.0 gw _blank
3rd nic: ip 192.168.3.10 mask 255.255.255.0 gw _blank

any help is appreciated.

 

[Bill Grant]

Because the Internet router is not directly connected to your internal
subnets, it doesn't know about them. It only has a connection to the
192.168.1 subnet.

You could change your "link" subnet to 192.168.0.0/16, so that the
router sent all 192.168 traffic to your server. Or you could just add
static routes to it to forward traffic for the internal subnets to your
server.

 

[Guest]

Have you added a "default" route to the ISP? Which NIC is connected to the ISP?

----- (e-mail address removed) wrote: -----

I have a routing issue, please help. I've configured
win2k server to be multihomed, w/ 3 nics. RRAS is already
enabled. the first nic is connected to ISP router and the
other 2 nics are 2 local segments. the clients from 2
local segments can ping each other but it can't ping the
isp router.

1st nic: ip 192.168.1.10 mask 255.255.255.0 gw 192.168.1.1
2nd nic: ip 192.168.2.10 mask 255.255.255.0 gw _blank
3rd nic: ip 192.168.3.10 mask 255.255.255.0 gw _blank

any help is appreciated.

 

[Guest]

The internet router is connected to the 1st nic card of
the win2k server.

From server I can ping all the local network including
outside the router. The problem I have is that the
clients from the two local segments can't ping the isp
router.

multihome server configuration:
1st nic: 192.168.1.10/24 --> isp router (192.168.1.1/24)
2nd nic: 192.168.2.10/24
3rd nic: 192.168.3.10/24

 

[Bill Grant]

You cannot ping the router because the router does not know where to send
the reply packets. The default route of the Internet router is out to the
Internet, and that is where your replies are going!

You need to add extra routing to the Internet router so that it knows
how to reach the "internal" subnets. eg

192.168.2.0 255.255.255.0 192.168.1.10
192.168.3.0 255.255.255.0 192.168.1.10

The ping replies will then be forwarded to your server, which can then
deliver them.