FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

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I Plan to Stick Around
Posts: 77

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

@RogersDave

 

Thanks Dave! That sounds re-assuring. Hope, we'll move on now from "modem reboot" to other bugs and missing features. Smiley Happy Unless of course the reports will go on like this: "3 days, no reboots..." Smiley LOL

 

I Plan to Stick Around
Posts: 73

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

@RogersDave

 

I think my modem tried to download the new firmware you may have pushed to it, but "Disruption during SW download - Power Failure" ended up happening and after 3 or so reboots by itself it hasn't updated. I'm on the .28T2 firmware since I factory reset to avoid the reboots. If you can maybe push the .33T3 firmware to me I'd appreciate it. 

 

These were the event logs I got:

1111/09/2017 18:41:0769010900errorDisruption during SW download - Power Failure
1211/09/2017 18:41:0769010100noticeSW Download INIT - Via NMS
1311/09/2017 18:42:0869011100noticeSW download Successful - Via NMS

 

I tried rebooting to see if it would load it but it hasn't. 

Network Architect
Network Architect
Posts: 611

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial


Nadernt wrote:

@RogersDave

 

I think my modem tried to download the new firmware you may have pushed to it, but "Disruption during SW download - Power Failure" ended up happening and after 3 or so reboots by itself it hasn't updated. I'm on the .28T2 firmware since I factory reset to avoid the reboots. If you can maybe push the .33T3 firmware to me I'd appreciate it. 

 

These were the event logs I got:

1111/09/2017 18:41:0769010900errorDisruption during SW download - Power Failure
1211/09/2017 18:41:0769010100noticeSW Download INIT - Via NMS
1311/09/2017 18:42:0869011100noticeSW download Successful - Via NMS

 

I tried rebooting to see if it would load it but it hasn't. 


I'm trying to do it but I'm having issues. Your modem has the software loaded in the alternate software bank, I just need to figure out how to make it load it....

I Plan to Stick Around
Posts: 73

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

Thank you for the quick response. Appreciate it.

Resident Expert
Resident Expert
Posts: 5,536

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

@RogersDave, what's the root cause or trigger for the reboots.  Understanding that a second design or coding error has been found, what's the trigger?  Is it a signal condition, or caused by a certain traffic type for example?  Beyond updating a modem to .33T3, what should users be looking for in terms of signal levels and/or network configuration and traffic type in order to possibly avoid this.  Personally speaking I don't think I've seen any reboots other than those that I initiate myself.  I suspect that our household is pretty typical, gaming, netflix, youtube videos, web cruising, the occasional VPN, etc, etc. 



Network Architect
Network Architect
Posts: 611

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

All I was told is that they found a memory leak in some software module (unspecified) in the gateway function.

I Plan to Stick Around
Posts: 77

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

@RogersDave

 

May I ask some relevant Qs given you're a well qualified network architect?

 

For example, I see the trend at Rogers to cup even further upload speeds on new Gigabit subs. Hence the question, when this modem FW and Rogers infrastructure will be ready to face Bell challenge with near symmetrical speeds in both directions? What exactly prevents it from happening now, and why the upload speed targets are degrading instead of improving overtime?

 

Another question: I see in some areas Rogers contractors are digging the ground presumably running fibre to street taps. What kind of equipment is replaced or upgraded by doing this, how it will affect local area network capacity, and will CODA modem and its FW be able to coupe with upgraded upload speeds?

 

Yet one more question: why upload speeds seems to have more constrains and limitations in DOCSIS3.0 and 3.1 compare to download speeds? Is that purely a restrictive measure to prevent users uploading content, or its rather driven by limitations of the signal transmission method? How upload signal is different from download signal in that sense?

I Plan to Stick Around
Posts: 73

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

@RogersDave

 

Did you figure out how to load the firmware? Is there anything I need to do on this end?

Thanks.

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Network Architect
Network Architect
Posts: 611

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial


arnym21 wrote:

@RogersDave

 

May I ask some relevant Qs given you're a well qualified network architect?

 

For example, I see the trend at Rogers to cup even further upload speeds on new Gigabit subs. Hence the question, when this modem FW and Rogers infrastructure will be ready to face Bell challenge with near symmetrical speeds in both directions? What exactly prevents it from happening now, and why the upload speed targets are degrading instead of improving overtime?

DOCSIS networks are very dynamic in nature and are constantly evolving. What happens is that upload speed is very limited compared to download speed (more details in question 3 below).

 

In order to offer symmetrical speed, we need a technology called full duplex DOCSIS. This is great in theory but requires massive change to our infrastructure, going from an active/passive technology to a fully passive network with fibres much deeper into the network so that only splitter are  used instead of a combination of amplifiers/splitters.

 

When it comes to degrading speed, yes usage always increases in every area of the network and this over time degrades speeds. This is continuously monitored and segmentation activities are triggered. Sometimes, we see unforecasted jumps in usage (usage increases faster than our capacity to segment). Problem is that people complain publicly when their speed goes down but rarely that it suddenly improved back... Some segmentation activities are fairly quick (if we already have fibre) or can take months if we need construction permits and digging to lay down new fibres.

 

 

Another question: I see in some areas Rogers contractors are digging the ground presumably running fibre to street taps. What kind of equipment is replaced or upgraded by doing this, how it will affect local area network capacity, and will CODA modem and its FW be able to coupe with upgraded upload speeds?

There could be multiple reasons for this but it is likely a segmentation activity. In a hybrid fibre-coax network (HFC), you have a fibre going from the headend all the way to the node (point where optical signals are converted to coax). A segmentation activity means that we take 1 node (with X number of houses connected to it) and split it in 2 (with X/2 houses connected to it). This effectively doubles the capacity available at each house. 

 

Yet one more question: why upload speeds seems to have more constrains and limitations in DOCSIS3.0 and 3.1 compare to download speeds? Is that purely a restrictive measure to prevent users uploading content, or its rather driven by limitations of the signal transmission method? How upload signal is different from download signal in that sense?


 A lot of this is historical. DOCSIS uses cable as a transmission medium and cable was originaly for TV services. Everything is therefore based on TV channels. The old channel "2" is located at 59 MHz and each channel is separated by 6 MHz from that point onward. I won't go in the details of what happened to channel 1, that's another story...

 

Now when bi-directionnal services were introduced, engineers needed "clean" spectrum for these low power devices (modems) that would not be impacted by TV services, especially broadcast TV services and the lower part of the spectrum (below 42 MHz) was selected. All amplifiers on the network are based on this and amplify signal above 42MHz in the downstream direction while signal below 42MHz are amplified in the upstream direction.

 

That leaves room for about 4 channels for upstream traffic while we support more than 50 channels of downstream capacity in most areas. The lowest channel of all is very "dirty" and subject to a lot of interference so it is not used (different story with DOCSIS 3.1 in the upstream).

 

There are enchancements possible to this configuration called the mid-split where we could move the upstream/downstream limit at 85 MHz which would provide a lot more uplink capacity. This however requires a change to all amplifiers so again takes time and planning. We might see this in the coming year, area by area, as required based on usage/congestion levels.

 

*** This is a very simplified view of all the considerations in the planning and engineering of an HFC network ***

 

I'm a Regular
Posts: 847

Re: FEEDBACK - Rogers Rocket Wi-Fi Modem Firmware Trial

When will upload 3.1 be available ?
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