50MB - 10MB Upload ?
 

Hi,

Just checked my config for the modem and the upload has updated

Primary Upstream Service Flow
SFID : 533
Max Traffic Rate : 10250000 bps
Max Traffic Burst : 16320 bytes
Min Traffic Rate : 0 bps
Max Concatenated Burst : 16320 bytes
Scheduling Type : Best Effort

Speedtest

https://www.cableforum.co.uk/images/local/2010/07/6.png


Is this for good?

Re: 50MB - 10MB Upload ?
 

More likely a trial that they have not told you about, phone up and complain.https://www.cableforum.co.uk/images/...2011/06/21.gif

Re: 50MB - 10MB Upload ?
 

10 would be very nice indeed

Re: 50MB - 10MB Upload ?
 

I'd be happy with 5mbit upload rate. Wish they would officially release some information about the upload rate upgrades.

Re: 50MB - 10MB Upload ?
 

As soon as they release information people will complain, that they haven't got there's, best for VM to do the work needed and then release the information.

Re: 50MB - 10MB Upload ?
 

Hi, just as a note, that website can on occasion give incorrect results.
For instance, my T-Mobile 3G Mobile broadband account record 10Mb upload speeds on that speedtest too, which is obviously wrong.

Im not saying that speedtest you ran was wrong, just that i have experienced incorrect results with it before, the 3g test Iran gave me that result a few days on the trot too, so it wasnt just a small isolated thing.

try looking at http://192.168.100.1/CmOpConfig.asp to see what your modem is connected at

Re: 50MB - 10MB Upload ?
 

As I said in my first post the modem says:

Primary Upstream Service Flow
SFID : 533
Max Traffic Rate : 10250000 bps
Max Traffic Burst : 16320 bytes
Min Traffic Rate : 0 bps
Max Concatenated Burst : 16320 bytes
Scheduling Type : Best Effort

As for the website, I have never had any wrong reading so far.

Re: 50MB - 10MB Upload ?
 

ah, sorry, i must have started reading with my screen scrolled down a little bit with out me realizing.

Re: 50MB - 10MB Upload ?
 

i think virgin said Q3 for upload speed increases so they have just under 2 months to upgrade people. I presume it will be a phased upgrade again too :(

Its a shame they still haven't announced the speeds that we'll be getting. I wanna know what 10mb and 20mb users will get, i'm hoping for 2mb and 4mb respectively, unlikely though.

Re: 50MB - 10MB Upload ?
 

Im guessing it'll be 10%

Re: 50MB - 10MB Upload ?
 

Hopefully as that's a nice 5Mb upload for me to play with.

Re: 50MB - 10MB Upload ?
 

As you say, its very unlikely. I would be amazed if you see 2mb and 4mb on the 10 and 20mb services. From what ive seen it will be a 10:1 ratio which makes sense since my 50mb connection is now at 5mb upload. I would guess they are using some 50mb users to trial the 10mb upload since we dont have a 100mb downstream service yet. Theres no way we'll see a 5:1 ratio and a 20mb upload on the 100mb service.

Re: 50MB - 10MB Upload ?
 

I reckon 10:1 sounds right no need for any higher at the moment.

Re: 50MB - 10MB Upload ?
 

Personally il'd be happy with 3mb upload on my 50mb connection. As long as Virgin have the capacity to handle loads of customers.

Just concerning like, if they upgrade everyone to 10mb upload, without the initial planning there for future upgrades, meaning if they give say 40,000 people 10mb upload and can barely handle that for example, what happens in a few years time when say another 40,000 people join the tarriff and there's no like capacity there to handle?

Basically I'm worried about potential upstream problems if an area becomes congested.

Re: 50MB - 10MB Upload ?
 

Personally I can't see 10mbit upload rate on the soon up and comming 100mbit connection being free for all. I bet there are some restrictions on it if things go pear shaped.

Re: 50MB - 10MB Upload ?
 

I'd be happy with 2mb Upload on my XL service, but then I don't really use my upload at all.

Out of interest, how do BT get away with offering up to 10Mb on their FTTC service?

Re: 50MB - 10MB Upload ?
 

placemat its different technologies.

cable technology has smaller upload capacity at the UBR.

I am amazed at the demand for upload speeds admittedly, personally the only uploading I do on a regular basis is emails, and more recently remote desktop.

a lot of torrent users? people running servers? or just feel its nice to have for things like uploading pictures and videos?

Re: 50MB - 10MB Upload ?
 

Running servers here..Hence my 700K UP with 10Mb down isn't exactly ideal... But the best I can get round here

Re: 50MB - 10MB Upload ?
 

Torrents for me

Re: 50MB - 10MB Upload ?
 

Ah you mean candidates for setting case law when the new Digital Economy Act starts getting enforced - yes that would be my guess.

Re: 50MB - 10MB Upload ?
 

or for those streaming remotely using a slingbox trying to improve picture quality with a better upload speed.

Re: 50MB - 10MB Upload ?
 

Now that is a perfectly legitimate need - as would be homeworking, speedy offsite backups, website maintenance, and scores of other things but I still have this deep down conviction that the first suggestion would account for most of the popularity.

Re: 50MB - 10MB Upload ?
 

Skype HD requires i believe 1.3mb upload in order to get their highest video quality. 20mb users get 0.75mb upload at the moment. Also alot of people upload videos to youtube and photos to facebook, tinypic etc. HD camcorders and cameras make the files bigger and bigger so we need a fast upload speed otherwise it takes forever, took 2.5hrs ish to upload a 740mb .m2ts camcorder file to youtube, not many people have the patience to do that. I'd be happy with 3mb upload on my 20mb connection, would be 4x faster than what it is now.

Re: 50MB - 10MB Upload ?
 

I am not after torrent users :) but more of an idea of the demand, it would seem VM have under estimated upload demand on their capacity planning.

I would like to see upload capacity tripled when new products released and then doubled after that to correct the under provisioning. so 6 fold increase.

Re: 50MB - 10MB Upload ?
 

they have ignored upload speed for years, in america alot of isps and 4mb down and 3mb up and have been like this for years yet we are on 20/0.75. VM are losing customers over this, o2/be have 1.3mb upload and 2.5mb upload tiers i believe and have had these for years, its a shame its taken virgin so many years to catchup. Lets hope we don't have to wait too long.

Re: 50MB - 10MB Upload ?
 

The main problem is VM ingored the DOCSIS 2.0 platform, if they had moved to DOCSIS 2.0 the upstreams would have been upgraded to compily with the standard, DOCSIS 3.0 has not give them the option to use bonded channels (which should be for future upgrades) afaik VM are using different frequencies to enable the upload speed upgrade.

@ Chrysalis, VM will not underesitmate the requipments, they have been doing trials for months to understand the load, due to VM using real customers they have a good idea of the demand, so the upgrades should be fine when done, VM will stagger the uplift to ensure demand is met.

Re: 50MB - 10MB Upload ?
 

bbk ignition said the same but didnt they do trials in the past as well and under estimated demand then?

eg. I read on tbb the 100mbit trials are 1.75meg up not 10meg up. Do trials emulate same user load as heavy areas? or do they have segmented bandwidth for small trial customer count such as only 100 users in ashford,kent.

If the plan is to simply upgrade a single upstream on overlay to a 18mbit channel and to relieve legacy by moving some more users of it to overlay then VM have underestimated by a long shot.

What is your estimation on upgrades needed in an area where only 1mbit is possible on a 10mbit product and only 200kbit upload on 512kbit upload product, to the new upgraded speeds to run without congestion?

Re: 50MB - 10MB Upload ?
 

Is there enough bandwidth for ack packets only using 1.75meg up for 100mbit? Correct me if I am wrong but doesn't the 1.5meg up for the 50mbit get saturated when downloading at the full 50mbit. If so, wouldn't the minimum upload rate for 100mbit be between 2.5meg and 3meg at the least and not 1.75meg?

Re: 50MB - 10MB Upload ?
 

The standard upgrade for 100Mbit and 10:1 ratio is 2 resegmentations and a doubling of channel width on overlay network, increasing upstream bandwidth by a factor of 8 and quadrupling downstream.

There is no requirement to ack every single packet, I'm not sure where this comes from. TCP does, by default, do cumulative acknowledgement - an ack implicitly acknowledges every transmitted packet up until the sequence number the acknowledgement is supplied for.

The exception to this is misconfigured TCP stacks.

If one is acknowledging every single packet 100Mbit requires 3.6Mbit of upstream as a bare minimum, which would, yes, mean that 1.75Mbit is not enough for the 53Mbit downstream on the 50M.

HTH.

Re: 50MB - 10MB Upload ?
 

I wonder how BT's infinity will change virgin's upload speeds. Upto 40mb down and 10mb up for FTTC enabled exchanges and cabinets over copper, the upload would be way better than virgin's. I bet Virgin are hoping BT upgrades very slowly. Sky and BT will be using FTTC, i wonder if Virgin will be for houses that aren't cabled (which is alot). Maybe they could make their Tv boxes work with it somehow, they'd probably have to give users different modems i would have thought. BT's tv is rubbish so virgin could gain quite alot of customers by doing this.

Re: 50MB - 10MB Upload ?
 

It has dropped back to 5MB upload now.
Just checked the modem config page.

Re: 50MB - 10MB Upload ?
 

Trial over then, bit of a bummer for you.:bigcry::bigcry:

Re: 50MB - 10MB Upload ?
 

TCP stacks *used* to acknowledge every packet. These days, almost all TCP stacks implement delayed ACK which will (as the name suggests) delay ACKs, but SHOULD send at least one for every two packets. You therefore need approximately 1.8Mbps (by your calculation) for a 100Mbps downstream. It's probably possible to configure delayed ACK to acknowledge less often, but the default is always one ACK per two packets received.

http://freesoft.org/CIE/RFC/1122/110.htm

That said, it's assuming you're downloading efficiently with a 1500 btye MTU. As an example, my firewall pegs the TCP MSS to 1300 for various reasons, so in my case I'd need a little more upstream for my ACKs.

I'd also quite like to use the downstream while backing up my computer to Mozy!

Re: 50MB - 10MB Upload ?
 

RFC2581, amongst others, deals with stretch acks.

Virgin can also skimp by using TurboDOX. I believe it's being re-enabled once fixed in the firmware. This plays some games with TCP streams to the extent where considerably less than 1.8Mbps is required from the client to saturate 100Mbps, and Payload Header Suppression further reduces the amount of data going across the actual coax.

Academic anyway, it'll be 100:10 so no problems!

Re: 50MB - 10MB Upload ?
 

I would die for a 10:1 connection ratio

Re: 50MB - 10MB Upload ?
 

Good news, lets hope this is stuck to and not changed come commercial rollout.