Orbi - RBR850 -WAN Port speed problems to Arris S33 - Surfboard DOCSIS 3.1 Cable Modem

Hello,

My Oribi Wifi 6 router is connecting at 100 mbps speeds to my Arris S33 DOCSIS 3.1 Cable Modem.

I am using the Cat 5E cables that were supplied.

My provider is Xfinity/Comcast and I have had GigE service for a while.

I recently upgraded from the Arris SB8200 to the newes version S33.

I had the provider trobleshoot the connection everthing checked out with the modem. I had a tech from Comcast come out and test the Cable speed and it checked out at GigE. I contacted Arris support and the Cable Modem checked out.

They mentioned to contact Netgear to find out why I am getting 100 mbps WAN speed.

Hardware Version	RBR850

Firmware Version	V3.2.18.1_1.4.14

GUI Language Version	V3.0.0.51_2.1.30.3

Operation Mode	Router

14 Replies

plemans
Guru
Jul 26, 2021
not the tech but when you connect a pc/laptop to the S33, what speeds do you get?

Have you tried changing to a cat 6 or great cable?
What device are you testing wan speeds on?
- hnz980
  Tutor
  Jul 26, 2021
  I have not tried cat 6 cable. I will give that a go.
  When I do a hard wire directly to the S33 from my mac m1 with the Netgear supplied gig 5e. I get gigE speeds.
  - plemans
    Guru
    Jul 26, 2021
    Some cat 5e (cheaper ones) have been sketchy at best. I've had them with gig speeds for certain devices and not for others.
    Its usually why I'd recommend trying a different cable first.
    Also, look at the port on the router. Maybe a pin is bent or dirty causing it to limit to only 10/100mbps connections links

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Orbi - RBR850 -WAN Port speed problems to Arris S33 - Surfboard DOCSIS 3.1 Cable Modem