Link to home
Create AccountLog in
Avatar of Omniboy
Omniboy

asked on

Sonicwall Causing Packet Loss

This one has baffled me. ANd sonicwall tech support is useless.

I'm experience 20% PL on a link between x.x.x.100 and x.x.x.3, a SBS box.

I have a TZ100 as my UTM.

When I unplug the TZ100 from the LAN switch. PL goes away. When I plug it back in, it goes up to 20%.

There is no PL direct to the gateway. It seems to be interfering somehow, and I can't track it down.

Any suggestions? Even basic ones, if I've tried it I'll say, but I have no clue at this point as to what's going on. Firmware is anywhere from stable release to early release, all versions cause this.
Avatar of Hofpad
Hofpad
Flag of Switzerland image

Probably you have the same IP address of the SonicWALL already in use on another network gear (printer, nas, switch, router, ...)?

Cheers
Avatar of Omniboy
Omniboy

ASKER

Hofpad - No. Not that.
ASKER CERTIFIED SOLUTION
Avatar of Carl Dula
Carl Dula
Flag of United States of America image

Link to home
membership
Create an account to see this answer
Signing up is free. No credit card required.
Create Account
Avatar of Omniboy

ASKER

Good suggestions. I've looked into that.

I think it's a shielding issue on the Cat-5... if I disable the wifi radios, the PL problem goes away. If I turn them back on, they come back.  I'm getting radio interference in the cabling somewhere, I think, that's not really my area of expertise.

If you have ideas, let me know. Either way I'll keep this thread updated.
I would start replacing (swaping) the cat5 cables near the Sonicwall/Sonicpoint (WAP) one at a time, until you find the cause.
Avatar of Omniboy

ASKER

Right idea. Not specifically what I did to resolve it, but essentially so.

I went through the AP mac list and banned devices one by one while running ping plotter.

Turns out we have a D-Link DCS-932L IP security cam that used to be on wifi, but has since been hardwired. For whatever reason the camera would try to associate with the AP and use the same IP as the hardwire, causing the collision and the network to packet storm.

Once I disabled the radio in the camera, the problem went away.

Thanks all for the suggestions, this one stumped me for a good while.