First off let me say I know this has been a frequent question posted here regarding slow upload speeds on the UTM. I have been a UTM user for well over a decade probably closer to 15 years. I may not be a Bob expert but I know my way around the software.
I recently got an ATT symmetric 1GB fiber line and plugged it up to my UTM VM. At first, performance was normal and expected. I was getting close enough to max throughput with the understanding that I would be getting less because it was running in a VM on older hardware. All fine. Then one day, and I honestly don't know when, upload performance just took a nose dive. I would get 3-5Mbps on uploads. Sometimes spiking to 7%.
I did all the normal things, turned off IDS, turned off web filtering, confirmed 1500 MTU on all NICs, you name it. I have a small Ubiquiti FW as a backup and it was able to get full 1Gb from all my VM's and my physical boxes, so I know my internal network is fine and can handle it. I even built not 1 but 2 brand new UTMs. One I did a restore of a config and another I did unconfigured, no settings. The performance of all these UTMs is the same 5Mbps upload. Download speeds are fine and close to theoretical maximums. I am at a complete loss. I do NOT want to migrate my services to Ubiquiti. I want to keep using the UTM. What else can I do? there are no IDS or filtering logs to check since all of that is disabled. Is this an ATT thing? Is there some special setting I need to make on the ATT FW or UTM interface setting I need to make to get this to work? It doesn't have to be perfect, but symmetrical upload is all I want.
HI, welcome to participation in the UTM Community and thanks for the tip-o-the-hat!
I'm not a fan of the wireless routers that AT&T uses in homes. My experience when I tried AT&T for a year in my lab at home was that their router kept losing its configuration. I'd be interested in knowing if you're seeing that in today's equipment.
I do have two clients that I know of that use AT&T fiber. In both cases, we had to disable 'Auto negotiation' and set fixed speeds and duplex for the UTM interface hardware and the interface on the Cisco router provided by AT&T.
Any luck with that?
Cheers - BobPS I'm about 200 miles straight north of you.
I've been off and on here before. Mainly off and then when something happens I can't remember what Email address I used on the forums so I make a new one.
I haven't messed with the settings of the ATT router much since I can get full gig on another device plugged into it. I may see about flopping cables and/or ports. I thought I had done that but perhaps not.