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Forum Discussion
superuser2510
Apr 21, 2026Aspirant
RS700s reducing speed to 90mbps.
So I have the BGW320 in IP passthrough mode and connected the blue 5GB port from the BGW320 to the WAN port on my RS700s. Intially I had connected the two with a 6ft cat5e cable and was getting a dow...
superuser2510
Apr 21, 2026Aspirant
Correct, but the cat6 cable is about 35ft and the cat5 cable is 6ft. When connecting a cable either cat6 or cat5 from the router I would get 90. If I connect a either cable to the BGW320-500 its 900 and up. In the RS700s, it shows the WAN as 100M/Full. I really don't want to see its the length of the cable but I might end up moving the BGW320 closer to the RS700s and use a shorter cat6 cable to connect the two.
schumaku
Apr 23, 2026Guru - Experienced User
CrimpOn wrote:Internet search will provide ample references that Cat 5e cable supports gigabit Ethernet up to 100 meters (over 300 ft.) A 35 ft. Cat 5e cable is more than enough --- as long as there is nothing wrong with the entire link.
Much better is it to understand that even the 2.5GBaseT (2.5GbE) and 5GBaseT (5 GbE) standards were set to allow operation on older network cabling and wiring. A healthy Cat 5E does serve 1000M, 2.5G and 5G over 100 meters with ease.
superuser2510 wrote:Correct, but the cat6 cable is about 35ft and the cat5 cable is 6ft.
There is no "but" - this is a defect cable, poor pressing on the connectors, and in very rare cases a problem with the end point devices (commonly dirt or corrosion on the contacts).
Over a good 35ft CAT6 cable you can very likely serve 10 GBaseT (10 GbE).
- StephenBApr 23, 2026Guru - Experienced User
schumaku wrote:
Over a good 35ft CAT6 cable you can very likely serve 10 GBaseT (10 GbE).
10GBaseT is designed to run 100 meters over CAT6A. CAT6 has more crosstalk, but normally will work well up to about 35 meters.
In any event, 5 gigabits should run reliably over ordinary CAT6.
schumaku wrote:
this is a defect cable, poor pressing on the connectors, and in very rare cases a problem with the end point devices (commonly dirt or corrosion on the contacts).
So I agree that the most likely cause is the cable or the connectors on the path. Or as you say, one of the end point devices.
superuser2510 - my suggestions were intended to rule out both the BWG320 and the RS700 as the problem.