SonicWALL TZ 205 high TX errors on X0 (LAN)

Hi -

We have three SonicWALL TZ 205 routers linked together via VPN.  Each location has around 10 users.  The primary location has two terminal servers which the two remote locations access via local IP.  I've noticed a lot of TX errors on the primary side (see attachment).  The remote locations have TX errors but not as many.  

I am curious:
1.) Would the high error count affect stability (dropped connection)?
2.) Would the high error count cause degradation of performance?
3.) How would I track the source of the errors?  

Any help is appreciated!Primary router
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grossman52Asked:
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Darrell PorterEnterprise Business Process ArchitectCommented:
What is the error-prone SonicWall attached to?

Is X0 and whatever it is physically connected to configured for auto-negotiate or are both sides set statically?

What kind of cable connects the two?

TX errors could be collisions, late collisions (excessively long cable or other oddity), environmental interference, link renegotiation, and other causes.  More information is needed.
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masnrockCommented:
In addition to what has been mentioned... Have you checked to be sure that there are no issues with your internet connections at any site? For example, fragmentation issues? From a command prompt, do the following:
ping 8.8.8.8 -f -l 1500
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grossman52Author Commented:
WalkaboutTigger:

X0 is connected via CAT5 patch cable to 48pt gigabit switch.  Cable length is about 3ft.  It's not a smart switch, so yes, it's auto-negotiate and the router is set for the same.  

masnrock:

Ran test, received:  "Packet needs to be fragmented but DF set"
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masnrockCommented:
grossman52: Try to set the speed/duplex on the WAN interface of the Sonicwall and the LAN interface of the router to 100 Mbps full duplex. See if things normalize. If not, follow the below regarding the ping test I asked you for earlier:

Keep repeating, but decreasing the number by 8, until you no longer get that error. The number at which you have success with the ping test is the number you need to adjust the MTU settings on the WAN interface to. However, if that number for some reason ends up being below 1400, you need to call your ISP and get them to fix whatever issue is going on with the connection itself. Also if you get a chance, connect a laptop directly to the internet connection (you will need to set the Sonicwall's WAN address on your NIC card) and do the same test. This will prevent the ISP from trying to blame the fragmentation issues on the Sonicwall itself.
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