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ricka47
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Monday, September 20th, 2021 10:44 AM

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Motorola MB8611 not Showing 2.5 GB Connection

My equipment is as follows:

Modem: Motorola MB8611 (brand new)

Router: Asus RT-AX86U AX5700 (brand new)

Motherboard NIC: Realtek PCIe 2.5GbE Family Controller (Asus ROG CROSSHAIR VIII DARK HERO)

The modem is plugged into the blue connector WAN on the router and the PC is plugged into the green LAN 2.5 connector. I have 1.2 GB service but the blue light (indicating 2.5 GB) on the modem remains green. I note that when I plug it into the 2.5 port on the router that the light turns blue. But, then, do I plug the PC into one of the yellow ports? When I do that, WIndows shows that the NIC is now operation at 1.0 instead of 2.5.

The bottom line is that, no matter what combination of connections I use, 960 GB is the best that I get. I'd be happy with that if I knew that had all of the wiring correct.  I am using Cat 6 cables.

Is there something else that I can try?

Question

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Updated 

4 years ago

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Jlavaseur

Problem Solver

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948 Messages

4 years ago

Yes with that setup the best wired you will get is 1000 Mbps, if you examine the specifications of that router, i have the same router, it is multi gig, but its only 2.5 gig on wan or lan not both at the same time, but on a positive note, i get almost 1200 Mbps wifi when i use that same setup

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ricka47

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14 Messages

@jlavaseur Thanks for the information. So, are there routers that are truly multi-gig on both wan and lan? I just set it up yesterday and 960 is the best I've seen which is much better than my old 220! Thanks again, Rick

PS One more question. My mobo has an Intel(R) Wi-Fi 6 AX200 160MHz which appears to go to 2.4 GB. Would I be better off using that instead of the wired connection?

(edited)

4 years ago

0

Jlavaseur

Problem Solver

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948 Messages

4 years ago

Yes i would absolutely try the wifi 6, that's what i use, also that router has a option of dual wan mode, under that option, with dual wan set to off, make sure the wan mode is set to wan 2.5, that will give the fastest wifi speed, on another note, a modem like Motorola mb 8600 can supply the rt_ax86u with two 1000 Mbps feeds  utilizing the dual wan mode, so those two feeds combined will give input over 1000 Mbps, then the lan side can output over 1000 Mbps, i have done both, its a toss up really what you want to accomplish, right now i am just using the wifi, less wires to deal with and the speeds are above 1000 Mbps, for me its adequate to successfully send a email...

0

ricka47

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14 Messages

4 years ago

Cool - I'll try that. I have MB8611 which just has a single cable. Thanks!

6

Jlavaseur

Problem Solver

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948 Messages

@ricka47 right now i am using a mb 8611 and a Rt-ax86u just like you are..

4 years ago

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Jlavaseur

Problem Solver

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948 Messages

https://www.snbforums.com/threads/usb-to-2-5gbe-adapter-on-ax88u.67402/

interesting post, i had a 2.5 USB adapter.laying around and I tried it on the rt ax 86u, it did work but the speeds weren’t there, but the one I have has a different chipset, so I ordered the one the guy used and we will see what happens….

4 years ago

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ricka47

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14 Messages

I just ordered one as well and we can report back on the results. Thanks for passing this along!

(edited)

4 years ago

Jlavaseur

Problem Solver

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948 Messages

One other thing i just noticed, if my ethernet cable is just a smidge not all the way in the port speeds suffer severely, modem to router, i moved my router and speeds dropped,  re seated the ethernet cable, back to normal..

4 years ago

0

ricka47

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14 Messages

I'll keep an eye on that. I ordered the Plugable Adapter as I read that the 8156B chipset may be better. It will be here tomorrow.

Plugable 2.5G USB C and USB to Ethernet Adapter

 

(edited)

4 years ago

XfinityNico

Official Employee

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553 Messages

4 years ago

Hello @ricka47, thanks for reaching out for help on our forums! For clarification are you connecting the PC directly into the router or modem? Our listed of approved cable modems for the subcribed tier speed can be found here: https://comca.st/3hVc8kQ

Please ensure your make and model of modem is listed. 

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ricka47

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14 Messages

@XfinityNico

Thanks for the note. I'm using a Motorola MB8611 (which is on the approved list for the 1.2 GB tier) into an ASUS RT-AX86U. Since the router only has one 2.5 GB port, I used that as the LAN port and bought the adapter above (Plugable 2.5 G) to use as the WAN port. But, while everything looked fine, the speeds were only about 50% of what I was getting previously (about 950 GB). I have the 1.2 GB plan and was hoping to jump up just a bit.

4 years ago

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Jlavaseur

Problem Solver

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948 Messages

@ricka47  So are you trying to use it from the post I posted about it? So the routers kernel might not have the proper drivers, that’s why I went with the one the guy posted that worked, I have two different Usb 2.5 gig adapters and they both yield 50% less speed, so I just received the one I ordered, I’ll test it out soon. Also if the usb 3 port isn’t running at super speed or what ever is the fastest will show those results also

(edited)

4 years ago

0

Jlavaseur

Problem Solver

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948 Messages

@ricka47 The new adapter yielded similar results, i don't give up very easily, so i found this guide i am working on, https://wu.renjie.im/blog/network/ax88u-nbase-t/

i am compiling the custom firmware as i write this....

4 years ago

0

ricka47

New Poster

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14 Messages

@jlavaseur 

What adapter did you try - the Sabrent NT-SS5G? I tried the Plugable with the RTL8156B chipset and now plan to try the Sabrent because it has the AQC111U chipset that seemed to work for the poster over on SNB Forums. But, if that didn't work for you, it probably won't work for me either.

I did read on the link that you sent (scroll down) that maybe the processor on the 86U can't handle what we are trying to do. So maybe that is why it is slowing to 50%.

(edited)

4 years ago

0

Jlavaseur

Problem Solver

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948 Messages

@ricka47 yes i used the Sabrent NT SS5G, hold off buying it until i do some experimenting, i think a problem might be the order the drivers are loaded from what i read, if i get it to work, ill try to get the RTL8156B next as i have that adapter also...

4 years ago

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