Sagemcom FAST 5688W
Until a couple weeks ago working perfectly. My wife and I work from home and are now unable to connect to our corporate VPNs. Needless to say if this issue is not fixed very soon we will be canceling our T-Mobile home internet.
Forum Discussion
VPN issues, some work related programs won’t load
We had a big snow storms a few days ago and started having VPN connection issues. It was working fine until then. My company uses a IPSEC VPN and allow us to work remotely. When I'm home I'm unable to use the VPN on my T-Mobile home WiFi connection. When I use other internet connections such as my work mobile Verizon hotspot, I can connect and VPN works. My companies IT support staff have checked my settings and went over my laptop and found no issues. Could you please someone help me to resolve the issues?
I did rebooted and still didn't work. Thank you for your help!
Exact same situation here. Last week was the storm. Everything was working perfectly fine then the day after the storm, VPN is an issue up to now. T-Mobile rep is no help.
Tried the suggestion:
2.4 GHz, and select WPA - Did not work for me
2.4 GHz band > select WPA/WPA2 > WPA “TKIP & AES” - Did not work for me
I might end up switching Internet promptly because it's an issue especially when you work remotely.
I’ll search around if I can find other tips
TechWriter wrote:
LOOKING FOR HELP wrote:
Can you tell me what the model of the different gateway is? When I asked yesterday if there was another gateway to try, my customer service rep told me there wasn't. I hate switching because it's cheaper than what I had before and faster. However if I can't work from home when needed that doesn't help.
thanks for your comment!Hola,
You’re welcome. I was a little hesitant to post because I’m not sure this will work.
The model number is KVD21. And the HW version is R01.
So far so good this morning. But again, since the problem is intermittent, I'll have to give it some time to see if this really does work.
I have the Arcadyan KVD21. I've been having this issue since 4/19/24. I've tried the separate network, adjusting MTU, 2.4 gHz, etc. my employer is replacing my laptop but I've been using this laptop and T-Mobile with Cisco AnyConnrct for 13 months without issue.
What should be my next step? I live very rural and my only options are T-Mobile, Verizon, a local place that can't meet minimum speeds required by employer or satellite like Viasat or DishNetwork.
I've got the Fast 5688W for home internet. It's completely unconfigurable except for the SSID and password. I was able to get my VPN working by using a separate router. I thought I might have issues because I can't turn the T-Mobile HotSpot off however so far so good. Jitter might be a little high.... But speeds are good and back to normal.
Was having the same problem with iphone hotspot for past couple of months. Finally solved it on my MacBook by turning ipv6 off. Seems like TMobile changed to default to ipv6 and corporate vpn did not like that. I would think there is an equivalent for Windows as well. Hope this helps!
Command in terminal:
networksetup -setv6off Wi-FiReferences
I followed the steps from this website. Now I can connect to my vpn using t-mobile hotspot. Hope the issue will go away forever.
https://www.myopenrouter.com/article/vpn-connections-not-working-t-mobile-heres-how-fix
My company also uses the Cisco VPN, and I'm seeing the same issue here that everyone else has described. I have the newer FAST 5688W modem which has almost zero configuration. I have IPv6 off, MTU set at 1280, I've reset the modem and seen zero improvement. The only additional information I'd add is I experienced the same issues with Starlink, but not until recently… so maybe it is the Cisco VPN? I have zero options to adjust any settings on AnyConnect, all locked down.
I'm having the same issue with VPN and not being able to work from home because of this issue. I contacted T-Mobile and received a lot of the same responses already mentioned with no solution. It started about 2 months ago and will not be able to work from home until it is resolved or I switch to another provider.
TechWriter wrote:
LOOKING FOR HELP wrote:
Can you tell me what the model of the different gateway is? When I asked yesterday if there was another gateway to try, my customer service rep told me there wasn't. I hate switching because it's cheaper than what I had before and faster. However if I can't work from home when needed that doesn't help.
thanks for your comment!Hola,
You’re welcome. I was a little hesitant to post because I’m not sure this will work.
The model number is KVD21. And the HW version is R01.
So far so good this morning. But again, since the problem is intermittent, I'll have to give it some time to see if this really does work.
I just wanted to provide an update. Since switching to the Arcadyan KVD21 I have not experienced any more issues. Will report here if that should change.
Have the Sagemcom FAST 5688W.
Thanks. Will be trying to get the new Arcadyan gateway.
LOOKING FOR HELP wrote:
Called TMOBILE this morning; they said a resolution still wasn't found to fix the issue. Instructed me to check with my IT department to change VPN, I work for a power company they aren't going to just change something because TMOBILE can't get their stuff working. Promptly told them to send me a return label for their box and cancel my service; hate to since it is faster than what I did have but what I did have at least worked with my work computer/vpn.
What jerks they are. Trying to pin it on everyone's VPN! It took me about 6 calls to reps after they knew there was a problem. The ONLY fix right now is to get their new modem. It's white, I don't recall the name but if you backtrack in this thread you'll find it posted twice. Once w/ pic. They have a very limited supply and most reps will tell you they have no way of getting one for you. It's literally a game of keep calling until you get the rep who will help you and send you one. It's not your VPN & they know it! Perhaps that's what they tell everyone on 1st call just to put you off for awhile. I desperately didn't want to change as it had worked perfectly for over a year until this BS started on 1/22/24. If you want to go back demand getting the white modem. Again you'll have to backtrack here to find the name of it. Mine didn't have the name on the box or device but it is white and it did fix the problem.
