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Forum Discussion
Solved
Wierd Network Behavious
HI, I am looking for a bit of advice. I have recently purchased the new Quad band Orbi and it's great, exactly what it said on the box and behaving perfectly. However, I have this weird problem whi...
Further update!
So, after connecting a Cat 6 cable from the PC and the same switch as the Mac Pro, I was still getting the same results. After much discussion with various colleagues, one of them suggested going and downloading TCP optimizer at this link
After a quick look around the app and having it look at my setup if found a few missing registry tweeks and as soon as they applied them wallop, speed was back, for sanity, I applied it to the other PC in the office and once again it worked a treat. I still don't know what it was that changed it but it looks like it was a config issue on the systems rather than the switches, which makes sense after connecting the PC to the main switch. I have replaced the SFP modules going from the loft switch down to the GS110, maybe that also helped either way problem solved!
Thanks Kurt, I will do my best to talk you through the setup.......
So from the Virgin Media hub (in modem mode so no DHCP) I am pushing that via Cat 6 into Orbi Router, from their another Cat 6 into the first of GS110. There are over devices as well connected to the 110, but from the 110 via fibre up to the GS 728 in the loft into the first SFP port. Also connected to the GS is a MAC Pro, 2 x Synology NAS drives, 2 x Ras PI running Pi-Hole and Homebridge, Phillips Hue hubs and so on. Second SFP port has a fibre connection to my office plugged into another GS110 and 2 x PC's and one MAC Book Pro using a USB C ethernet connector but also the first of the Orbi Satalite all via cat 6 cables. From the third SFP port I have another fibre which drops down to the lounge where I have a third GS110 with the TV, AMP, Bluray player, apple TV and Virgin Media Box and the final Orbi Satellite. In other words, all the Orbi's are backhauled using the wired network.
Last night I swapped the two GS110s around, so the one in the lounge went to the office and vice versa, but this still didn't fix the issue. Looking at the web interface on all the switches, they are all showing as full duplex and all gigabit-capable devices are showing as negotiated at that speed. If I speed test from either of the PCs in the office they only register at best 600 Mbps but the MAC pro consistently shows 986 Mbps which is what I would expect. If I speed test from a wireless device, again on iPhone 13 or 14, both are close to 800mbps, so the wireless is working as expected. The only thing I can test is a cat 6 cable direct from the 728 in the loft to the PC and take the switch and fibre out of the equation which I will try, but I feel like I am missing something super obvious! Hope this helps
Update!
So I ran a Cat 6 up to the switch in the loft and connected the PC and repeated the test and got the same result so everything is pointing to the PCs but what I haven't got a clue. However, I noticed when up in the loft the third link light on the SFP ports is out and now the interface is reporting as down in the UI, but is still active as sending traffic and working. I am going to swap the SFP module to be safe and I have a spare fiber cable to do some further testing, but it doesn't make any sense now!
Further update!
So, after connecting a Cat 6 cable from the PC and the same switch as the Mac Pro, I was still getting the same results. After much discussion with various colleagues, one of them suggested going and downloading TCP optimizer at this link
After a quick look around the app and having it look at my setup if found a few missing registry tweeks and as soon as they applied them wallop, speed was back, for sanity, I applied it to the other PC in the office and once again it worked a treat. I still don't know what it was that changed it but it looks like it was a config issue on the systems rather than the switches, which makes sense after connecting the PC to the main switch. I have replaced the SFP modules going from the loft switch down to the GS110, maybe that also helped either way problem solved!
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