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Cannot ping LAN to LAN on a SonicWall TZ170

Posted on 2008-06-22
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Last Modified: 2013-11-16
Hello,
I have a SonicWall TZ170 in place and am experiencing some odd behavior on the LAN side.  When I add new devices with Static IPs, I cannot ping them once they're connected to the LAN ports from other LAN-connected devices.
If I replace the SonicWall with a Linksys router, all works fine, so I know the devices are configured properly.
I basically have an out-of-the-box configuration on the TZ170, with my only real change being to add VPN routes to a central router.  But that shouldn't affect the LAN.  I've even added an allow statement from any LAN address to any LAN address, but can't get anything to work.

Any ideas?  I know something's blocking it, but not sure what.
I've included a screenshot of my access rules in jpg format (attached) that shows all rules with the ones I added highlighted.

Thanks for any help you can provide!
sonicwallconfig.jpg
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Question by:zigafu
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Expert Comment

by:Press2Esc
ID: 21843060
if you enter "ipconfig/release" & "ipconfig/renew" on the LAN Adapter do you get any errors??

if no errors, can you ping the Sonic gateway address?  can you piong yahoo.com?

post the results from above...

P2E
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Author Comment

by:zigafu
ID: 21843184
Thanks for your response.
The device is a label printer with a TCP/IP interface.  The other device is a WAP.  Neither have the ping command capability.  However, when I swap out a Linksys router or a DLink switch for the SonicWall, I can ping both devices from another workstation on the LAN.  With the SonicWall in place, I can't ping either one.
Not sure if it matters, but both devices are static IP.  The printer has to be, the WAP doesn't.

Hope this helps,
Brian
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Expert Comment

by:Press2Esc
ID: 21844189
sorry for the confusion...  goto a windows PC snd enter the commands mentioned above.
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Expert Comment

by:Press2Esc
ID: 21845026
what is the static being used on the printer and AP?

Unless you intentionally set them, I suspect the Sonic and Linksys have different gateway addresses.  The dynamic NICs can "refresh" to the new IP, whereby the static of the printer and WAP are fixed.

P2E
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Author Comment

by:zigafu
ID: 21861503
I'm using static IP for the only PC on the network.
I can ping Yahoo.com and cnn.com.
the SonicWall gateway address is 10.0.40.1, and I can ping that as well.
the printer static is 10.0.40.22 with the same mask (255.255.255.0) and DG (10.0.40.1) as the PC.
the AP is 10.0.40.50.

It just seems like I can't pass traffic from lan port to lan port. If I swap in another device, it's fine.

Any ideas?
thanks,
Brian
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by:Press2Esc
ID: 21863472
When it is installed, what is the IP Address and DG for the Linksys?
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Author Comment

by:zigafu
ID: 21881025
10.0.40.1 is the IP and gateway for the linksys.
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Expert Comment

by:Press2Esc
ID: 21890669
Brian, the IP and gateway addresses cant be the same.

Is the WAP and router using DHCP or are the IP addresses set manually?
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Author Comment

by:zigafu
ID: 21893001
both are using Static.  
I guess my problem here is that I can plug a Linksys router in the SonicWall's place with the exact same configs and it works fine.  In the case of the WAP, I can't ping it from any other device, but I can connect to it wirelessly and get internet through the SonicWall.

I just feel like there's something in the SonicWall config that's not allowing me to ping devices that have static IPs assigned to them.  

I've doubled the points value of this question, as it really seems to be a stumper.

Thanks to anyone that can help (and especially to Press2Esc for the continued support here).
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Press2Esc earned 250 total points
ID: 21894142
If both devices are config's with the SAME IP....  you MUST flush the gateway device  (e.g., Cable, DSL router, etc?) DNS server..  It is definitely possible that when  you switch routers, the gateway device has cached the IP & MAC address of connected devices.  If teh gateway device does NOT auto-renew, the newly connected router (w/same IP) may have the wrong MAC address associated with it and will not function properly.
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Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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