CODA-4582 - Open Issues for Investigation

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I Plan to Stick Around
Posts: 12

Re: CODA-4582 - Open Issues for Investigation

I have not, no. I'm currently not home to check. Pardon the question, but what will the wifi checker do?

I rebooted the modem by unplugging. Before I left the house I noticed one of the lights were flashing still. Looked like a window, 4th from the right I believe? The lights to the left of it we're not illuminated at the time.

I'm trying to Google how to do a firmware check/update for the coda 4582.
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Posts: 6,221

Re: CODA-4582 - Open Issues for Investigation

@Rcam, check the following settings on the 2.4 Ghz wifi page:

 

Wireless Enabled:  ON

Enable (under the Network Name:  ON

Broadcast SSID:  ON

 

When the wifi is enabled and running, you should be able to see a 2.4 Ghz wifi LED at the front of the modem, indicating that the 2.4 Ghz network is up and running.  Using a wifi analyzer of some type, you should be able to see the network up and running.  There are three antenna for the 2.4 Ghz and four for the 5 Ghz wifi on the 4582.  Unless you had a modem with a wifi controller failure, you should see the 2.4 Ghz network up and running on an analyzer of some type.

 

Regarding @Telek's comments of "The bios whitelisting is mainly because not all devices are made equally. The antennas in the laptop might not work with other devices, leading to damaging the device or just poor wifi performance."

 

I'll just say that I respectfully disagree.  Yup, not all devices are made equally, personal opinion, because the manufacturers cheap out and install 2.4 Ghz wifi and 100 Mb/s ethernet ports instead of dual band wifi adapter cards and gigabit ports.  Thats economics, pure and simple.  Spending the additional pennies that it would cost to add those items would be well worth the cost to the end users. Unfortunately, we see this occur, over and over when new forum member arrives on the forum looking for answers for poor performance issues.  

 

As for the antenna, these are standard length antenna with standard connectors. I've replaced a 2.4 Ghz card for a dual band card on a Dell laptop and never had any complaints after replacing it.  I'd do it again in a heartbeat as there are simply too many 2.4 Ghz transmitters in my neighborhood, making it completely miserable for anyone who is restricted to the 2.4 Ghz band due to a cheap manufacturer.  The USB adapter is one possible workaround, not absolutely ideal, but for those who prefer to stay away from laptop surgery, it works. I've never had any complaints from users who have gone that route on my recommendation.  

 

In terms of updating the firmware, you can't do that on your own.  Updates must come via the Rogers network and are pushed out to the modem by Rogers.  You can however request to join the trial firmware program which will see the latest trial firmware loaded when it becomes available.  Right now, the majority of 4582s will be running production firmware, V2.0.10.26T2.  The trial version, which I and many others are running is V2.0.10.27.  Both are stable and both should present no problems in terms of wifi operation.  

 

To signup for the trial firmware if you're interested, send a private message to @CommunityHelps.  Follow that link to the public page for @CommunityHelps and then select the link on the right hand side to "Send this user a private message" to navigate to the message composition page. It will already be addressed.

Fill in the title: CODA-4582 Modem Firmware Trial

In the text area, add your modems: MAC Address
Serial Number
Modem Model: CODA-4582

The first two can be found in the Status page when you log into the modem or on the back of the modem. They can be copied from the Status page and pasted into the message.

When you're logged into the forum, watch for a number overlaid on your avatar at the top right hand corner signifying a response from one of the moderators. Select that link and follow it down to your message inbox. You should see a disclaimer that has to be acknowledged prior to loading the latest version of trial firmware.

Keep an eye open on this thread or the Open Issues thread for any particular requirements for rebooting or running a factory reset on a modem with trial firmware loaded. Usually there are no special instructions, but, that can happen occasionally. For V2.0.10.27, you can reboot or restart the modem after disconnecting the modem power and the modem will remain at V2.0.10.27. If you run a factory reset the modem will revert back to V2.0.10.26T2 which is the current network wide version for the CODA-4582.

 

One last item, you indicated that one of the LEDs was flashing, 4th from the right.  That modem should be standing upright so that the LEDs are vertical.  That will place the wifi antenna at the top of the modem. 



I Plan to Stick Around
Posts: 154

Re: CODA-4582 - Open Issues for Investigation


@Datalink wrote:

I'll just say that I respectfully disagree.  Yup, not all devices are made equally, personal opinion, because the manufacturers cheap out and install 2.4 Ghz wifi and 100 Mb/s ethernet ports instead of dual band wifi adapter cards and gigabit ports.  Thats economics, pure and simple.  Spending the additional pennies that it would cost to add those items would be well worth the cost to the end users. Unfortunately, we see this occur, over and over when new forum member come to the forum looking for answers for poor performance issues.  

 

As for the antenna, these are standard length antenna with standard connectors. I've replaced a 2.4 Ghz card for a dual band card on a Dell laptop and never had any complaints after replacing it.  I'd do it again in a heartbeat as there are simply too many 2.4 Ghz transmitters in my neighborhood, making it completely miserable for anyone who is restricted to the 2.4 Ghz band due to a cheap manufacturer.  The USB adapter is one possible workaround, not absolutely ideal, but for those who prefer to stay away from laptop surgery, it works. I've never had any complaints from users who have gone that route on my recommendation.


You can respectfully disagree, but it doesn't change physics 🙂

 

 

Using a 2.4GHz antenna on a 5GHz radio is a bad idea. The SWR must be very high and not much RF will be radiated from the antenna.  Because the design of the antenna doesn't encourage the different frequency energy to radiate, most RF energy stays in the transmission line as a standing wave (interference) and is eventually consumed by output circitry of the radio as heat.  That means, the reachable range is significantly shorter and the RF final may be fried due to high SWR.  Some high end radios have SWR detecting circuit and take appropriate action to protect the output, but I doubt that cheap consumer grade replacement cards for laptops will have this feature.

 

 

You might have lucked out with the updates that you have done, and had laptops which had dual band antennas in them.  However, for older laptops which never came with a dual band option, best case you get poor and disappointing performance, worst case you damage your network card.

 

I would strongly recommend going for a USB option if they need 5GHz. Cheap and easy. You can get the nano adapters if the size is a concern.

 

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Re: CODA-4582 - Open Issues for Investigation

@Luckess, that is the entire table.  Your signal levels for the DOCSIS 3.0 channels are higher than I would like to see, but, where they are shouldn't cause huge issues.  I'd prefer to see them down around 0 dBmV.  The downstream signal to noise ratios are good.  The upstream channels are ok for their signal levels as well.  The one item to note is that your modem is running DOCSIS 3.1 on the downstream side, so the frequency and power level data that is presented is not correct, as shown in the OFDM section.  They should be ok, but, I would call tech support and ask the CSR to check the downstream OFDM (DOCSIS 3.1) power level as he or she can apparently see the correct level.  The question of the day is whether or not that level is within spec.

 

Fwiw, DOCSIS 3.1 should result in data rates up over 900 Mb/s as seen on a speed test.  There have been users who have reported slower data rates.  You might be one of those users, its too early to tell at this point.  

 

Can you have a look at the Software (Firmware) version as shown on the first STATUS page and let me know what that version is.  And, can you have a look at the upper right hand corner of the data block on the STATUS page.  That is the WAN IP address.  At the present time, you should see two addresses, one shorter IPV4 address and one much longer mixed character IPV6 address.  Can you let me know if both are present.  Don't post the addresses, just let me know if they are both there.  

 

What you can also do is go to ipv6-test.com which is an IPV4 and IPV6 test site.  Please let me know what the score is that is shown in the upper right hand corner of the test results.  It will be X/20.  Ideally it will show 19/20.  If it shows 17/20, that means that your pc/laptop requires an additional IPV6 rule for the windows firewall, which isn't hard to add.  



I Plan to Stick Around
Posts: 16

Re: CODA-4582 - Open Issues for Investigation

Anyone got a sec to help me with my modem too?  For the last 18 hours it's been disconnecting and reconnecting (works for a minute, down for 10 minutes) and it's continued on today but seems to have spread itself apart again albeit noone is on wifi right now.  I can provide logs.  Thanks!

 

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Posts: 6,221

Re: CODA-4582 - Open Issues for Investigation

@Telek, yes, I understand where you're coming from in terms of the SWR and resulting problems that can occur.  If that's a real concern, then both the adapter and antenna should be replaced at the same time.  I would actually have to see antenna for 2.4Ghz and dual band use to believe that manufacturers are actually installing the correct antenna as you rightly point out.  

 

Nano adapter?  I wouldn't recommend one without a lot of research.  We've seen this used before and it/they have caused nothing but problems.  Not to say that they can't work, I would be very hesitant to recommend one without digging into the specs.



I'm Here A Lot
Posts: 7

Re: CODA-4582 - Open Issues for Investigation

@Datalink

 

My speed tests are pretty good. I feel like the speed isint as much the issue as the connectivity issues. I get 130-150 (it varies) mbs down speed. And we have a package that is upto 150. I'm not sure if that's good? I feel like it's good.

 

my software version is : 2.0.10.26T2

 

Both WAN IP Adress's are present. 

The test is : 19/20

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Re: CODA-4582 - Open Issues for Investigation

@Malik2k1, your signal levels for the DOCSIS 3.0 channels are a little higher than I would like to see, but, where they are right now is ok.  Over many years they will drop slowly.  shouldn't cause huge issues.  The downstream signal to noise ratios are good.  The upstream channels are ok for their signal levels as well.  The one item to note is that your modem is running DOCSIS 3.1 on the downstream side, so the frequency and power level data that is presented is not correct, as shown in the OFDM section.  They should be ok, but, I would call tech support and ask the CSR to check the downstream OFDM (DOCSIS 3.1) power level as he or she can apparently see the correct level.  The question of the day is whether or not that level is within spec.

 

 

Can you modify your first post so that the modem MAC address reads:

 

CM-MAC=XX:XX:XX:XX:XX:XX 

 

If you find that the modem is offline, don't hesitate to call tech support and ask the CSR to run a signal check on the modem.   That will fail automatically and result in a tech visit to your home to determine what the problem is.  Do you have overhead cabling from the utility pole to your home?  From the description of weather and poor internet performance, that is what it sounds like.  There is a good chance that its not just your cable line that is suffering from problems.  I would ask the CSR to check other modems connected to the same tap to determine if that was the case. 

 

Edit:  Are you able to connect to the modem via ethernet?  It looks like you're using wifi, so the question is, is this a wifi issue or a modem issue, which would show up with "no internet access" on an ethernet connection? 



I Plan to Stick Around
Posts: 16

Re: CODA-4582 - Open Issues for Investigation

Thanks @Datalink

I appreciate the insight. The CSR did run a test and said everything looked good and that my modem and neighboring modems showed 0% packet loss so I honestly have no clue what's going on with it.

I have a gigabit connection but my speeds have been running around the 600 range whereas before I was in the 900 range.

I have the CODA 4582 without black dots and I'm not sure if that's something I should be exchanging it for or just sticking it out with my existing one.

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Re: CODA-4582 - Open Issues for Investigation

I would absolutely recommend exchanging the modem.  Are the disconnects long enough that you can contact tech support when they happen?  Thats the best time to do that, when you don't have internet service, so that the tech can troubleshoot the problem.