ColinWD's profile

Visitor

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5 Messages

Tuesday, April 15th, 2025 10:35 PM

Internet Speed

Greetings - I am currently on the Gigabit X2 plan and am supposed to be getting 2100 down and 300 up.

Speed tests show that I am only getting on average 925 down. Up speed averages about 350 and is fine, no problems there.

Would like to get closer to the down speed that I am paying for. 

Any help would be greatly appreciated.

Contributor

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111 Messages

11 days ago

are you wireless or hard wired? If hard wired i believe you have to be plugged into the red jack on the back of the xb8 modem.

Visitor

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5 Messages

From the street to the house to the Xfinity CGM4981COM it is connected via coax. From the Xfinity equipment to my Synology RT2600ac it is connected via CAT6.

Confirming that the CAT6 cable needs to be connected to the red port on the back of the CGM4981COM?

Gold Problem Solver

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26.3K Messages

11 days ago

... Gigabit X2 plan ... getting on average 925 down ...

What modem or gateway are you using, and are you connecting with Wifi or Ethernet? Are you using a standalone router?

If any of the devices in the chain are only capable of 1 Gbps you'll only see 940 Mbps or so due to protocol overhead.

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

Visitor

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5 Messages

Modem/Gateway is Xfinity CGM4981COM. The router it is connected to via ethernet cable is a Synology RT2600ac which is 2Gpbs capable.

Contributor

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111 Messages

The XB8 has a red port on the back which enables 2.5 gig through put to another hardwired device. You have the Ac router which does not have a 2.5 Gb port, so you cannot get the speeds you seek without updating to the RTX2600ax which does have a 2.5 gig port. A month or so ago switch with 2.5gb capabilities so I could run my hard-wired devices at the higher speeds. A simple google search supplied this.

The Synology RT2600ac has four 1 Gigabit Ethernet LAN ports. It also has one 1 Gigabit Ethernet WAN port. While it doesn't offer 2 Gbps ports, it does offer Gigabit Ethernet connectivity for its LAN and WAN ports. 

The advertising from the Manufacture states "2.5gb throughput" which is the misleading part. It is all in the advertising.

Expert

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110K Messages

10 days ago

@ColinWD 

The 2600 is the weak link in the chain. It has only gigabit Ethernet ports. Do you have the Xfinity gateway device in bridge mode ? If you are going to hang a third party standalone router off of it, it needs to be in bridge mode.

Visitor

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5 Messages

EG - Thank you for your response and information. Based on the information you provided, I did some research and found a way to reposition the router so that the wireless provided the coverage and the PC now has the 2Gbps. Speeds are amazing!

Visitor

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5 Messages

10 days ago

Aceq2jot - I was wondering what the red marked port was for. With your information I was able to get it set up and everything is running smoothly.

I appreciate your time and assistance. Thank you.

Official Employee

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2.1K Messages

 

ColinWD I see our expert @EG was able to get you taken care of with your connection concerns! If you need anything else in the future, please stop in and make a new post! 

 

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Expert

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110K Messages

10 days ago

@ColinWD 

You're quite welcome ! And that's good to hear !

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