Help with Network routing issue on Windows 2008
I'm wondering if someone can help me. I'm working on some training using Microsoft E-Learning. They have provided me a lab, but the lab does not seem to be working as intended. That is, the instructions for my various exercises do not seem to be correct in that I keep hitting road blocks. At any rate, I'm trying to get a firm grasp on the subject matter, so I'm taking it upon myself to try and figure out "how to make the instructions work!". Heavy handed task I know.
At any rate, I have 3 servers with the following configurations.
--------------------------
Server1
IP: 10.10.0.10
SM: 255.255.0.0
GW: 10.10.0.1
--------------------------
Server2 (Windows-based router)
IP1: 10.10.0.1
SM: 255.255.0.0
GW: none
IP2: 10.11.0.1
SM: 255.255.0.0
GW: none
--------------------------
Server3
IP1: 10.11.0.24
SM: 255.255.0.0
GW: 10.11.0.1
IP2: 10.12.0.24
SM: 255.255.0.0
GW: none
--------------------------
Server2 has RRAS installed with the LAN Router role. It's routing table seems to be correct (routes for both 10.10.0.0 and 10.11.0.0).
Server1 can ping 10.11.0.1.
Server1 can NOT ping 10.11.0.24. Why? I imagine it's due to the next issue.
Server2, itself, can NOT ping 10.11.0.24. Why?
Server3 can NOT ping 10.11.0.1 (its gateway). Why?
It is my understanding that Server2 and Server3 should be able to ping each other as they both have interfaces on the 10.11.0.0 network. I assume once this gets fixed, the other issues will be corrected as well.
Any advice would be helpful!
Thank you,
Matthew
At any rate, I have 3 servers with the following configurations.
--------------------------
Server1
IP: 10.10.0.10
SM: 255.255.0.0
GW: 10.10.0.1
--------------------------
Server2 (Windows-based router)
IP1: 10.10.0.1
SM: 255.255.0.0
GW: none
IP2: 10.11.0.1
SM: 255.255.0.0
GW: none
--------------------------
Server3
IP1: 10.11.0.24
SM: 255.255.0.0
GW: 10.11.0.1
IP2: 10.12.0.24
SM: 255.255.0.0
GW: none
--------------------------
Server2 has RRAS installed with the LAN Router role. It's routing table seems to be correct (routes for both 10.10.0.0 and 10.11.0.0).
Server1 can ping 10.11.0.1.
Server1 can NOT ping 10.11.0.24. Why? I imagine it's due to the next issue.
Server2, itself, can NOT ping 10.11.0.24. Why?
Server3 can NOT ping 10.11.0.1 (its gateway). Why?
It is my understanding that Server2 and Server3 should be able to ping each other as they both have interfaces on the 10.11.0.0 network. I assume once this gets fixed, the other issues will be corrected as well.
Any advice would be helpful!
Thank you,
Matthew
SOLUTION
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actually, per his diagram, both networks ARE routed to each other. There's only one router, server2, and it has the RRAS role installed. since it has interfaces on both networks and he already stated that the routing tables looked correct, I would say that part is fine.
The problem is the broken connection between servers 2 & 3, since they are on the same subnet and can't ping each other. NO matter how well your router is configured, it can't route traffic to a box that it can't hit.
The problem is the broken connection between servers 2 & 3, since they are on the same subnet and can't ping each other. NO matter how well your router is configured, it can't route traffic to a box that it can't hit.
hi
make tracert to 10.11.0.24 from server 2 .. am sure it will go through 10.10.0.1
and do it from server 1
also tracert to 10.11.0.1 from server 3
and send results
make tracert to 10.11.0.24 from server 2 .. am sure it will go through 10.10.0.1
and do it from server 1
also tracert to 10.11.0.1 from server 3
and send results
ASKER
Thanks valheru_m.
It's funny that you mentioned firewall. Because originally, Server1 could not ping 10.11.0.1. In my troubleshooting for that issue, I ended up disabling the firewalls entirely on all systems and that resolved that issue. So now, I have no firewalls running, and my aforementioned issues persist.
I agree that there may be a physical connectivity issue somewhere.
The lab was provided to me by MS and it is completely virtual. I'm thinking they have something messed up on the back end with the virtual network. I just wanted to make sure I wasn't missing anything integral.
@memo_tnt
I will try your instructions and will report when I have the results. My lab timed out and I have to set it up again.
It's funny that you mentioned firewall. Because originally, Server1 could not ping 10.11.0.1. In my troubleshooting for that issue, I ended up disabling the firewalls entirely on all systems and that resolved that issue. So now, I have no firewalls running, and my aforementioned issues persist.
I agree that there may be a physical connectivity issue somewhere.
The lab was provided to me by MS and it is completely virtual. I'm thinking they have something messed up on the back end with the virtual network. I just wanted to make sure I wasn't missing anything integral.
@memo_tnt
I will try your instructions and will report when I have the results. My lab timed out and I have to set it up again.
ASKER
Here's something interesting. Server3 is originally configured with an IP of 10.10.0.24 with GW: 10.10.0.1. In this configuration, it can ping 10.11.0.1 fine.
When I follow instructions to change the IP to 10.11.0.24 with GW: 10.11.0.1, I can no longer ping 10.11.0.1.
Could it be something to do with the way server2 is configured? Neither NIC on server2 has a gateway defined. Maybe it's getting confused with the routes to 10.10.0.0 and 10.11.0.0?
--------------------------
Results from Memo's request
--------------------------
Tracert to 10.11.0.24 from Server2
1 [10.11.0.1] reports: Destination host unreachable
Tracert to 10.11.0.1 from Server3
1 [10.11.0.24] reports: Destination host unreachable
--------------------------
Routing table from Server2 (attached as I can't copy/paste from lab)
--------------------------
server2-routeprint.jpg
When I follow instructions to change the IP to 10.11.0.24 with GW: 10.11.0.1, I can no longer ping 10.11.0.1.
Could it be something to do with the way server2 is configured? Neither NIC on server2 has a gateway defined. Maybe it's getting confused with the routes to 10.10.0.0 and 10.11.0.0?
--------------------------
Results from Memo's request
--------------------------
Tracert to 10.11.0.24 from Server2
1 [10.11.0.1] reports: Destination host unreachable
Tracert to 10.11.0.1 from Server3
1 [10.11.0.24] reports: Destination host unreachable
--------------------------
Routing table from Server2 (attached as I can't copy/paste from lab)
--------------------------
server2-routeprint.jpg
hi
what's your default route ,, it's not appear in your route table??
what's your default route ,, it's not appear in your route table??
ASKER
Server2 *IS* the router, thus there is no default route. Neither interface has a gateway.
sorry i meant server 3 but didn't mention that ..
anyways, does server two has two NICs or you are using two IPs for the same NIC
???
try remove network 10.10.0.0 and check the other one
??
anyways, does server two has two NICs or you are using two IPs for the same NIC
???
try remove network 10.10.0.0 and check the other one
??
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Thanks and good luck with your training!
ASKER
Thanks valheru_m!
it's a routing issue>>
you need to route both networks to each other ..