Communicate with Router behind SonicWall

October 1, 2012 at 12:40:07
Specs: Windows 7, Core 2 duo E4800 / 4 GB
I have 2 networks in my office. The main network router which is our gateway to the internet is a SonicWall. The SonicWall IP address is 192.168.0.1/24 on the 192.168.0.0/24 network. Behind the SonicWall, I have a TrendNet router plugged in to create another network. The network behind the TrendNet router is 10.2.1.0/24. The TrendNet local IP is 10.2.1.1/24. The WAN port on the TrendNet router has an IP of 192.168.0.107/24. Click the following link to see a diagram of my network: http://imgur.com/b82v5

The SonicWall has the following setup in the routing table:

Network destination: 10.2.1.0
Network Mask: 255.255.255.0
Gateway: 192.168.0.107
Interface: LAN
Metric: 1

The Trendnet router has the following setup in the routing table:

Network Destination: 10.2.1.0
Netmask: 255.255.255.0
Gateway: 0.0.0.0
Interface: LAN

Network Destination: 192.168.0.0
NetMask: 255.255.255.0
Gateway: 0.0.0.0
Interface: WAN


Here is the problem I am having. When I am on the 10.2.1.0/24 network, I can access the internet fine, and ping any computer on the 192.168.0.0/24 network with no problems. However, when I am on the 192.168.0.0/24 network, I cannot communicate or ping the 10.2.1.0/24 network. When I do a tracert from the 192.168.0.0/24 network, it hits 192.168.0.107, but it does not make it any further than that. I need to be able to communicate with the 10.2.1.0/24 network (trendnet network) from the 192.168.0.0/24 (SonicWall network). Any ideas?


See More: Communicate with Router behind SonicWall

Report •

#1
October 1, 2012 at 14:11:27
Being unfamiliar with the TrendNet router I can't advise on how to properly configure the route but from what you say, the issue has to be the route from 192.168.0.0/24 to the 10.2.1.0/24 networks.

The only thing that jumps out at me is that perhaps you have to use the LAN IP of the TrendNet router as the gateway IP in the above route.

Pretty much all of the equipment I've worked with needs a gateway address for the network you're routing to. You appear to have given a destination network, but no gateway to said network.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


Report •

#2
October 1, 2012 at 17:23:25
When you say the route from 192.168.0.0/24 to the 10.2.1.0/24 network, I am assuming you mean on the SonicWall? If so, I can try adding that, but I don't believe that will work. Reason being, is that the SonicWall won't be able to find the gateway (10.2.1.1) on a network that it can't get to in the first place. If you are talking about putting 10.2.1.1 as the gateway for the Trendnet where I currently have it set to 0.0.0.0, I have already tried that. Unfortunately that didn't work either. Thanks for the input. Any more ideas?

Report •

#3
October 2, 2012 at 06:01:47
I was referring to the TrendNet router, not the sonicwall.

Well, all I can tell you is it has to be something with that particular route or the TrendNet router itself.

Sorry I can't be of any more help.

Have you tried calling TrendNet's support line and asking them?

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


Report •

Related Solutions

#4
October 2, 2012 at 06:10:40
Yeah, I have tried calling Trendnet support. They were unable to help me. All they said was to use it as a switch, but that doesn't do what I want. I want them on two separate networks. Thanks for the help anyway.

Report •

#5
October 2, 2012 at 07:12:23
I'm guessing you only talked to whomever answered the phone at TrendNet's support. That would be a helpdesk person or what is known as "first level support".

If it were me, I'd call back and ask to speak to someone in "second level support" Helpdesk people are typically folks with little or no actual education/experience in IT. Second level support (which is part of my job) are the folks with training and experience who, in this case, should know the equipment well and have worked with it.

It's worth a try and can only cost you a bit of time. Sadly most helpdesk people can't deal with questions like yours because they're not in their Q&A database. However, if you can get through to a second level support person, that would be someone who actually could help you.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


Report •

#6
October 2, 2012 at 09:19:01
The TrendNet router isn't dropping ICMP packets is it?

Tony


Report •

#7
October 2, 2012 at 09:37:28
You have to allow file and printer sharing and ICMP on the trendnet firewall or try temporary disable firewall.Also please not that windows system will not communicate using computer names across sub-nets .

Report •

#8
October 2, 2012 at 11:08:06
"Also please not that windows system will not communicate using computer names across sub-nets"

Why? I've never experienced this. Maybe with NetBIOS names and WINS as it's not routable but DNS should resolve just fine.

Tony


Report •

#9
October 2, 2012 at 13:57:12
Silly question, but is there an embedded firewall in the trendnet router that is blocking incoming traffic? It sounds like that to me.

-----
IT Desktop & Network Consultant - MOS Master Certified, MCP, MCSA, MCITP - Windows 7, CCNA Certificate Pending, A+, Network +

::geek::


Report •

#10
October 3, 2012 at 01:23:21
#7 If that were true it would be a lot more complicated to set up large Windows networks. It is not true even for NetBIOS (just use bridging) and it is certainly not true for TCP/IP.

This answer is based on empirical evidence, not theory.


Report •

#11
October 6, 2012 at 11:10:29
Thanks for all the responds. The Trendnet router is not dropping ICMP traffic. I have it set to allow ICMP traffic. Also, i am not able to communicate to that network at all (not just a ping problem). Sumeshbnr, the trendnet router is not that advanced. There is no option to disable the firewall, only port forwarding. I do not really see a way to forward all ports through the router or something of the sort. And as far as hosts names, i'm not even worried about that yet since I can't even ping IP addresses. However, Tonysathre is correct, DNS would resolve fine in this situation. Anyway, our company is currently going through a big change and we have many other projects going on at the same time. My manager has decided to temporarily take another route to this problem and concentrate on other important matters. Therefore, I am no longer able to troubleshoot this problem. If we decide to continue with this, I will post back any further information I have discovered. Thanks for all the help.

Report •

#12
October 6, 2012 at 15:39:14
Thanks for posting back, keep us posted so we can get this resolved.

Tony


Report •

Ask Question