1 megs users

[KingRoLo]

When i used to have 512k cable (from Blueyonder) or ADSL (from BT) i got a top download speed of about 60k a second.

1 meg users, could you possibly tell me at what speed you generally max out at on average using NTL? when you are downloading from a good server. I am guessing it should be double the top speed of a 512k line which i generally found was 60k absolute maximum, so im thinking 120k top download speed for 1 megs users. But i know in the real world it doesnt always work out like that.

Cheers.

[quadplay]

The maximum you should see, taking account of overheads, would be:

1024000 / 1024 * 1460 / 1518 / 8 = ~120KB/sec

So yes, you're right. :)

[Ignition]

The maximum you should see, taking account of overheads, would be:

1024000 / 1024 * 1460 / 1518 / 8 = ~120KB/sec

So yes, you're right. :)

Where'd the extra 18 come from? :)

NB Yes I know what the extra 18 bytes are I just want to know why you've put them there :)

Taking account of the overheads you're looking at 1024000 / 1024 * 1460 / 1500 / 8 = 121.7k/s or so (The extra 18 bytes of overheads referred to by poster above aren't actually shaped as part of the cap on the modem, the cap is purely layer 3 / IP and not layer 2 or below so data link overheads aren't an issue).

[quadplay]

Pedant! :PP:

[mmm]

When i used to have 512k cable (from Blueyonder) or ADSL (from BT) i got a top download speed of about 60k a second.

1 meg users, could you possibly tell me at what speed you generally max out at on average using NTL? when you are downloading from a good server. I am guessing it should be double the top speed of a 512k line which i generally found was 60k absolute maximum, so im thinking 120k top download speed for 1 megs users. But i know in the real world it doesnt always work out like that.

Cheers.

yes regularly get 120k (can start higher then drop back when start up caching etc cleared).

But the upload at only 10k can be very noticeable!

[Ignition]

Pedant! :PP:

Correct :angel:

You were far too exacting for me to be anything less :PP:

[Digital]

My maximum rate when downloading from a good server is 129/130 KB/sec.

[KingRoLo]

is the upload seriously 10k a sec?? :td:

[dragon]

is the upload seriously 10k a sec?? :td:

100kps on 1mbit
200kps on 2mbit
512kps on 10mbit

So yes its around 10kb/s

[quadplay]

Well, around 11.8KB/sec after overheads. ;)

[mmm]

is the upload seriously 10k a sec?? :td:

On my Terayon

QoS max upstream bandwidth = 100000 bps
QoS max downstream bandwidth = 1024000 bps

so upload less than 10% of download. When sending and receiving (which must use both) email it is noticeable that the upload is restrictive - but I'm too mean to upgrade!

[Dark Fiber]

On my Terayon
QoS max upstream bandwidth = 100000 bps
QoS max downstream bandwidth = 1024000 bps

How do you get QoS data from a Terayon?

[tozhan]

probably not the place to ask and i dont mean to highjack your beautiful thread...

but does NTL offer a 1024/256 (ish) service? im on the 1024/100 service which is crap coz upload speeds at waaayyy too slow for some online games.

if they do, how much??

also, if i do some complaining about my serious lag issues. could they put my upload speed up a bit without any change to download? even if its only 5k/s more i'd be happy. :p

[quadplay]

Hi tozhan, and :welcome: to CF.

The only services currently offered by ntl are:

-----------------------------------------
Downstream/Upstream (Monthly price, cap)
-----------------------------------------
512/64 (£14.99, 1GB)
1024/100 (£17.99, Unlimited)
2048/200 (£24.99, Unlimited)
10240/512 (£37.99, 75GB)
-----------------------------------------

Speeds cannot be tailored for individual customers unfortunately.

[tozhan]

thanks for quick reply :p

ok well i dont like the sound of NTL much anymore :(

does ntl do ADSL? preferably with a better upload speed? SDSL would be great :D

[mmm]

How do you get QoS data from a Terayon?

Use Robin Walkers Docsdiag when directly connected to the modem with a secondary IP address (192.168.100.2) allocated (in XP pro)


C:\software\docsdiag>jview /cp docsdiag.jar docsdiag -v
DocsDiag v030720 Copyright 2001-3 Robin Walker rdhw@cam.ac.uk

Terayon DOCSIS Cable Modem: <<HW_REV: 6.62; VENDOR: Terayon; BOOTR: NONE; SW_REV
: 1.7.14; MODEL: >>

System up time = 4 days 09h 05m 48.71s
...
IP address.192.168.100.1 = 192.168.100.1
Ethernet single-collision errs.1 = 452
Ethernet multiple-collision errs.1 = 420
Downstream channel ID = 0
Downstream channel frequency = 402750000 Hz
Downstream received signal power = 7.1 dBmV
Upstream channel ID = 6
Upstream channel frequency = 36784000 Hz
Upstream timing offset = 13148 units of (6.25/64) microseconds
QoS max upstream bandwidth = 100000 bps
QoS max downstream bandwidth = 1024000 bps
SigQu: received without error = 559359365 codewords
SigQu: correctable errors = 0 codewords
SigQu: uncorrectable errors = 0 codewords
SigQu: Signal to Noise Ratio = 33.1 dB
SigQu: microreflections = 24 dBc
Cable modem status = Operational
Upstream transmit signal power = 40.2 dBmV
Number of interface resets = 0
Downstream sync losses = 0
Invalid MAP msgs received = 0
Invalid UCD msgs received = 0
Invalid Ranging Responses rcvd = 0
Invalid Registration Resps rcvd = 0
T1 timer expiries = 0
T2 timer expiries = 0
T3 timer expiries = 3
T4 timer expiries = 0
Ranging Aborts = 0
Tx mini-slots used (contended).180 = 0
Tx mini-slots used (dedicated).180 = 16396805
Tx data re-tries.180 = 0
Tx data retry limit exceeded.180 = 0
Tx bandwidth req retries.180 = 54916
Tx bw req retry lim exceeded.180 = 0
Date and Time = 2006-01-19,01:32:45.0+00:00
Configuration filename = cmreg-tera210x-light.cm

[Dark Fiber]

Use Robin Walkers Docsdiag when directly connected to the modem with a secondary IP address (192.168.100.2) allocated (in XP pro)

Thanks, I was under the mistaken impression that Docsdiag with the TJ210 relied on a method which recent actions by NTL had made unusable.