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Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

ahdfahf
I'm Here A Lot

I am currently on the rogers ignite 250 unliimited plan and I just recently upgraded my rogers modem/router from CGN3 to CGN3ACR. I had the opportunity to perform some speed tests using both modems and I discovered that the download speeds for my wireless (5Ghz-band) N clients dropped by about 20 - 40 mbps however my wireless AC clients substantially increased, as should be expected. The upload speeds were very consistent between the CGN3 and the CGN3ACR. Rogers speed test always indicated an upload speed of about 10-11 mbps for both my AC wireless clients and my 5Ghz-Band N wireless clients. Now as for the download speed performance, I expected my speeds to substantially increase for my AC wireless clients which they did, however what puzzled me the most was that the download speeds for my 5GHz band-N clients decreased. Shouldn't those speeds remain the same between the CGN3 and CGN3ACR?

 

I performed all the speed tests late at night (about 2 am) using rogers ookla speed test. Under wireless 5GHz basic settings the wireless mode was set to 802.11ac, Channel Bandwidth was set to 80MHz, and Wireless Channel was set to Auto (changing this value didn't really affect speeds).

 

Here are my results:

 

 

Desktop PC (AC client): CGN3 (200mbps down / 11mbps up) ---- CGN3ACR (326mbps down / 11mbps up)

Laptop (Dual Band N client): CGN3 (160-180mbps down / 11mbps up) ---- CGN3ACR (120-140mbps down / 11mbps up)

Iphone 5 (Dual Band N client): CGN3 (100-110mbps down / 11 mbps up) ---- CGN3ACR (80-90mbps down / 11 mbps up)

 

Are there any specific settings I can try modifying in order to maximize my download speeds for my 5GHz band N clients?

What could be the underlying issue for the decrease in download speeds?

 

I would greatly appreciate some feedback, thank you.

 

 

 

***Edited Labels***

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

rwallingford
I've Been Here Awhile

FWIW, I just upgraded from 150 Hybrid  to 250u Ignite. (Still using the same CGN3)

 

I am wired and when I ran OOkla speed test I was consistenly getting only about 100Mb

 

I checked the properties of my NIC and found that "Jumbo Frames" was enabled.

 

As soon as I disabled  "Jumbo Frames" speed tests consistently run at about 310Mb

 

 

View solution in original post

18 REPLIES 18

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

RogersMoin
Moderator
Moderator

Hello @ahdfahf, quite interesting post, thank you for the analysis and comparison. Even though AC is backwards compatible, N/G/B clients may not be optimal speed wise. Personally, I would add another SSID and lock it to N, and connect Laptop and iPhone to that SSID. Technically it should yield optimal speeds. Let us know if you need assistance in setting up additional SSID.

 

Thanks,

RogersMoin

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Punk_Out
I Plan to Stick Around

I also have the 250mb package and currently have a ticket open because I'm not getting the correct speed. And it's going a 100mb slower then it should.

What was your overall speed on the old box when you would do a speed test. I only get 115mb at the moment. I'm happy that my upload goes the proper 20mb, it's just my download going the incorrect speed.

 

I'm thinking I might have to update to a new modem but it's really not that old, I still consider it new. Was just thinking about it after I saw the post.

--------------------------------------------------------------------------------------------------------------
Rogers doesn't like the pictures I uploaded so I don't think they will like any of my hilarious signatures too.

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Is that download rate on a wired or wireless connection?  I went back and reviewed your signal levels from your previous posts, and when you posted them they were fine.  Good signal levels and signal to noise ratios on the downstream and good signal levels on the upstream.



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

You should be getting more than 110ish on that plan, as on the ignite 100u, i am getting 130/10 pretty steadily.

 

(on wired that is.  Wireless.. which i am using my own RT-N66U, i am only getting 98/10.. but i am pretty sure that is more the wireless card more than anything)



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

headhoncho
I Plan to Stick Around

I, too, am on the 250u plan and like the previous poster, I am getting 100Mbps less than I should - the upload is fine (20 Mbps).  The tech guy was here for an hour yesterday and placed several phone calls to superiors I guess, and nobody could figure out the problem.  He even ran a cable directly from the box by the road.

 

I have a ticket open now as well and hopefully this can be remedied

 

using the new modem

 

eta:  all the tests were run on a wired computer

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Is that download rate on a wired or wireless connection?



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Punk_Out
I Plan to Stick Around

For me yes it is on a Wired connection. I've said that alot. also it's better to do speed tests on a wired connection anyways. Some wifi devices have limits to how fast they go and those limits can be very small.

 

Also Rogers had closed my ticket even though I'm still getting 115mb. I would like at least 200mb, which would be close to what there advertising.

--------------------------------------------------------------------------------------------------------------
Rogers doesn't like the pictures I uploaded so I don't think they will like any of my hilarious signatures too.

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

redone0578
I've Been Here Awhile

I have ignite 250 and just did a speed test 7:06 tonight the test came back with a 93mbps. Is there an average for the time of day  as lets say a limit to either be above or below? I think thats pretty low for the package. Would the modem be part of the slow speed as Im currently using the advanced modem the Rocket modem doesnt seem to be available anywhere.

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Is that a wired or wireless speed?  Can you log into the modem, navigate to the DOCSIS WAN page, copy the downstream and upstream tables and post them into this thread.  The tables contain the cable signal levels which may be of interest.



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

redone0578
I've Been Here Awhile

Downstream Overview Port ID Frequency (MHz) Modulation Signal strength (dBmV) Signal noise ratio (dB) Channel ID 1 633000000 256QAM 3.400 40.366 6 2 591000000 256QAM 2.900 38.983 9 3 597000000 256QAM 3.800 40.366 1 4 603000000 256QAM 4.100 40.946 2 5 609000000 256QAM 3.300 40.946 3 6 615000000 256QAM 3.300 40.366 4 7 621000000 256QAM 3.200 40.946 5 8 639000000 256QAM 3.300 40.946 7 9 645000000 256QAM 4.100 40.366 8 10 651000000 256QAM 4.500 40.366 10 11 657000000 256QAM 4.700 40.366 11 12 663000000 256QAM 4.600 40.366 12 13 669000000 256QAM 4.200 40.366 13 14 675000000 256QAM 4.700 40.366 14 15 681000000 256QAM 5.300 40.366 15 16 687000000 256QAM 5.300 40.946 16 17 693000000 256QAM 5.600 40.366 17 18 699000000 256QAM 5.400 40.366 18 19 705000000 256QAM 5.400 40.946 19 20 711000000 256QAM 5.800 40.366 20

Upstream Overview Port ID Frequency (MHz) BandWidth Modulation Type Signal Strength (dBmV) Channel ID 1 38596000 3200000 ATDMA 43.500 5 2 23700000 6400000 ATDMA 42.000 7 3 30596000 6400000 ATDMA 43.500 6

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Your signal levels and signal to noise ratios for the cable feed are fine. They are a little high, but thats okay, as they will slowly drop over the next few years as the cable and connectors age.  The most that I ever saw from my CGN3 on a 2.4 Ghz network is about 105 - 110 Mb/s.   The 5 Ghz will top out around 200 Mb/s.

 

Just to check the wifi environment where you live you could install a program like inSSIDer.  By looking at at, you, or we should be able to determine how tough it will be to see higher data rates.  The link below is to the last freebie version of inSSIDer.  It will monitor both 2.4 and 5 Ghz networks, but it does not display the newer 802.11ac networks which run in the 5 Ghz band.  The network display will show both in list form and graphically, how many other routers are running nearby, and from the graphical display it is possible to determine if there are better channels to be operating on that might yield higher data rates.  If your laptop is 5 Ghz capable, you should notice a significant difference in the number of 2.4 Ghz networks running versus the number of 5 Ghz networks running.  That might give you some idea that the 5 Ghz band is a better place to be operating.  If you load the application, take a screen shot of the network display and post it somewhere that we can have a look at it, we can tell you how easy or difficult it might be to switch channels.

 

 

http://www.techspot.com/downloads/5936-inssider.html

 

Here is a link to the new version which has since become a pay version.  For $20 U.S., if you run networks in the 5 Ghz band, its worth buying.

 

http://www.inssider.com/inssider4/



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

rwallingford
I've Been Here Awhile

FWIW, I just upgraded from 150 Hybrid  to 250u Ignite. (Still using the same CGN3)

 

I am wired and when I ran OOkla speed test I was consistenly getting only about 100Mb

 

I checked the properties of my NIC and found that "Jumbo Frames" was enabled.

 

As soon as I disabled  "Jumbo Frames" speed tests consistently run at about 310Mb

 

 

View solution in original post

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

And that is why troubleshooting problems can be very difficult sometimes.  These range from problems that come up over time, cabling and connectors deteriorating as they age, to problems with advanced settings, such as the one that you found.  Its a pretty wide range to sort through.  Good catch.  I never would have thought of that at all.  Definitely something to keep in the back of my mind during future troubleshooting sessions 🙂



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

We ran into some jumbo frames issues at work (and this is on HIGH END equipment, not stuff like the CGN3, etc).

Its quite possible that it doesnt support it at all.

The one issue we had at work was.. that it DID support jumbo frames. 
BUT, not at the FULL values.
The packet headers, due to the network, etc... had a bigger packet, which was actually pusing it over the jumbo frame full size, causing an error.
Droping the size down to JUST under the full amount, making room for the header.. and its been fine.
Something like that COULD possibly work as well in these settings.


Though, unless you are running a server type machine, with a TON of I/O through it, i really dont think it would make a difference 🙂



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Mayoo
I Plan to Stick Around
Are you all did tests with or without a router ? I always connect my pc to modem directly to test and found my speeds close to 310mbps down but when i connect to my E3200 router, speed drops to 150Mbps. waiitng to get AC-2400 RT87U

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

how do you set up the extra ssid?

Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

Unfortunately you will have to call tech support to set up the extra SSIDs.



Re: Hitron CGN3 vs Hitron CGN3ACR on Rogers Ignite 250u

I remember I had the same problem when I first got the package. How I resolved it was by changing my cables to CAT6 cables. That fixed the download speed cap problem. Do try that and see if it fixes the problem for you.