Just been upgraded from 10mb to 20mb, but know my internet is slower!

[Tiny Tinkle]

Ive been on 10mb for a few years now and never had any trouble, but a couple of weeks ago i was givena free upgrade to 20mb and thats where my problems started.

I mostly use my internet with PS3 and before i could watch iplayer etc no probs but now i get constant buffering and it will rarely work also the PS3 speedtest was always right before showing 10mb or 2.5mb if traffic management had kicked in.
Now i see speeds all over the place ranging from 1mb to 18mb, the PS3 speedtest seems to be telling the truth because when its low iplayer etc wont work and when its high iplayer works fine.

So it seems my internet is no longer stable i am still using the same hub that i had before but i notice thast im now on docsis 2 and im sure i was on docsis 1 before.

So could it be that docsis 2 has too many users in my area and thats slowing me down?

Also does docsis 1 only support up to 10mb?

If it does i would rather go back to docsis 1 and 10mb than put up with this, will virgin downgrade me again?

Thanks for any help.

[Zee]

you said you're having trouble with buffering.

See this thread: http://community.virginmedia.com/t5/...3/td-p/1582824

This is part 3 as the other threads became too long. There are links to the other 2 threads in the first post.

[thenry]

could you post your connection stats please

[raging bull]

I recon tiny T is on an ambit 255/256 modem.

[robson689]

I'm not sure but I think anything up to 20Mbps is on the DOCSIS 1.1 network? I didn't think VM used DOCSIS 2.

[Ken W]

Originally Posted by raging bull

I recon tiny T is on an ambit 255/256 modem.

The 256 modem can handle 20 Mbit.

My speed has been doubled to 20Mbit, I have the 256 modem and I get 20 Mbit solid.

[General Maximus]

20mbit is on docsis 2 and the ambit 256 can handle 20mbit no probs. What will be interesting is if the op hasnt got an ambit 256 and is using an older modem which is only good for 10mbit such as the terayon tj210.

Anyways, the chances are that there were too many users on 10mbit which have now been banged up to 20mbit and there isnt enough juice to go around.

There were talks many years ago about moving 20mbit users onto docsis 3 so I don't know if you can ring up to get a shub and if you use that you'll be on 20mbit on docsis 3.

[Sephiroth]

Originally Posted by Ken W

The 256 modem can handle 20 Mbit.

My speed has been doubled to 20Mbit, I have the 256 modem and I get 20 Mbit solid.

Before I upgraded to XXL, I started out on the 20 meg service (just round the corner from Ken btw). Had the Ambit 256 and always got 20 meg.

Downstream was DOCSIS 1.1; upstream was DOCSIS 1.0. It tells you on the upstream stats "Channel Type".

[Ken W]

Originally Posted by Sephiroth

Before I upgraded to XXL, I started out on the 20 meg service (just round the corner from Ken btw). Had the Ambit 256 and always got 20 meg.

Downstream was DOCSIS 1.1; upstream was DOCSIS 1.0. It tells you on the upstream stats "Channel Type".

My cable modem info.

Cable Modem Information
Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant
MAC Address : xxxxxxxxxxxxxxxxxxxxxxxxxxx
Serial Number :xxxxxxxxxxxxxxxxxxxxxxxxxx
Boot Code Version : 1.1.2c
Software Version : 2.111.1002
Hardware Version : 1.9

[Sephiroth]

Your current upstream type, Ken, is on the power levels page.

[Ken W]

Originally Posted by Sephiroth

Your current upstream type, Ken, is on the power levels page.

Cable Modem Upstream
Upstream Lock :
Locked
Upstream Channel ID :
1
Upstream Frequency :
45800000 Hz
Upstream Modulation :
QPSK
Upstream Symbol Rate :
5120 Ksym/sec
Upstream transmit Power Level :
47.2 dBmV
Upstream Mini-Slot Size :
4

[thenry]

it'll say in your log. remove the MAC addy before posting.

[Sephiroth]

Originally Posted by Ken W

Cable Modem Upstream
Upstream Lock :
Locked
Upstream Channel ID :
1
Upstream Frequency :
45800000 Hz
Upstream Modulation :
QPSK
Upstream Symbol Rate :
5120 Ksym/sec
Upstream transmit Power Level :
47.2 dBmV
Upstream Mini-Slot Size :
4

Hi Ken

Your upstream is on DOCSIS 2. This is ascertained from your upstream symbol rate (5120K), which is the rate at which the 6.4MHz channel operates and is only supported on DOCSIS 2.

BTW, is your upstream power steady at 47 dBmv? Or does it rise/fluctuate? I've noticed that your upstream modulation is QPSK, which means there's noise on your upstream which isn't good.

[General Maximus]

i noticed that as well but to be fair on the few occasions I have been on it (not happened in aaaaaaaaages) i didnt suffer performance wise

[Tiny Tinkle]

Ok guys my hub is a netgear vmdg280. Here are my connection stats, if this is not what you wanted then please excuse me im new to this.

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 282750000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+


--------------------------------------------------------------------------------

Downstream Channel
Lock Status Locked Modulation QAM256
Channel ID 99 Symbol Rate 6952000
Downstream Frequency 282750000 Hz Downstream Power 9.8 dBmV
SNR 40.9 dBmV


--------------------------------------------------------------------------------

Upstream Channel
Lock Status Locked Modulation QAM16
Channel ID 1 Symbol Rate 5120 Ksym/sec
Upstream Frequency 45800000 Hz Upstream Power 47.2 dBmV


--------------------------------------------------------------------------------

Primary Downstream Service Flow
Downstream(0)
SFID 9870
Max Traffic Rate 21480000 bps
Max Traffic Burst 3044 bytes
Mix Traffic Rate 0 bps


--------------------------------------------------------------------------------

Primary Upstream Service Flow
Upstream(0)
SFID 9869
Max Traffic Rate 1180000 bps
Max Traffic Burst 8160 bytes
Mix Traffic Rate 0 bps
Max Concatenated Burst 8160 bytes
Scheduling Type Best Effort


--------------------------------------------------------------------------------

Current System Time:Tue Dec 04 18:35:55 2012