UTM to XG, WAN interface error state

Odian,

what HW are you using? Sophos HW or your own HW?
Let us know.

Thanks.

i'm using XG 430, i also have tried to change the physical port from portA3 to portA5, but no luck.

Do i need to check the cable ? 

Thanks

Odian.

Odian,

change the cable and also if a swith is used between WAN and your provider, change port on physical switch. Is the WAN requiring a special MTU size?

lferrara,

For some reason, i'm not able to change the cable.
all of the ethernet configuration between UTM and XG is already the same. 

from report that i get in XG , that there were lots of attacks came to our network, and a lot of packets were detected as TCP,ICMP,and UDP Flood. now i Suspect the problem is related to that. 

what do you think ?

Hi,

Error packets are observed due to the mismatch with speed negotiation. The auto-negotiated Interface Speed should be a Full Duplex connection. If any interface has negotiated with a Half Duplex, manually set the Interface Speed to match that of the peer device. To set the interface speed, navigate through System > Network > Interfaces > edit the interface with error > Advance Settings> Interface speed.

After changing the interface speed, take SSH to XG and go to option 4. console: show network interfaces, run the command multiple time and observe which interface speed halts the increase in error packets.

Thanks

Hi, 

Yes,  i've also done that, i set the speed duplex to 100mbps/full-duplex (because in UTM for the same interface, i use auto-negotiation and the interface speed was set 100mbps/full-duplex) but it's still the same, the error packet's still increasing.  

Hi,

Deploy an intermediate (unmanageable) switch?

Hope that helps.