TTB speed Fluctuations

Hello,

I am seeing some strange drops in speed with our TTB line. Usually do about 72mbps and then we will star seeing speeds of between 9mbps to 30mbps. Any ideas? All tests done via wired connection.

http://i.imgur.com/UZpieqQ.png

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 34672 Kbps, Downstream rate = 92520 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79987 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:     34672 kbps     92520 kbps
Actual Aggregate Tx Power:   -   0.9 dBm     12.5 dBm
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 4.6 14.2 19.4   N/A   N/A 7.2 16.1 23.8
Signal Attenuation(dB): 4.6 13.5 18.8   N/A   N/A 9.4 15.9 23.8
SNR Margin(dB): 16.3 15.3 15.4   N/A   N/A 9.6 9.6 9.6
TX Power(dBm): -15.8 -29.1 -1.0   N/A   N/A 8.3 7.8 7.0


# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 34644 Kbps, Downstream rate = 92520 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79987 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 9.6 15.4
Attn(dB): 11.8 0.0
Pwr(dBm): 12.5 -0.9
VDSL2 framing
Bearer 0
MSGc: 18 26
B: 239 237
M: 1 1
T: 23 42
R: 0 16
S: 0.0955 0.3781
L: 20104 5374
D: 1 1
I: 240 127
N: 240 254
Counters
Bearer 0
OHF: 590735 245678
OHFErr: 6 0
RS: 0 1723985
RSCorr: 0 0
RSUnCorr: 0 0

Bearer 0
HEC: 25 0
OCD: 0 0
LCD: 0 0
Total Cells: 150176815 0
Data Cells: 5594729 0
Drop Cells: 0
Bit Errors: 0 0

ES: 3 0
SES: 0 0
UAS: 27 27
AS: 975

Bearer 0
INP: 0.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 1.65 3.98
OR: 116.09 64.22
AgR: 80103.09 20063.54

Bitswap: 85/85 0/0

You rebooted the router about quarter of an hour before taking those stats. Did that make any difference?

Does it only do this at certain times of the day or always? What ISP are you with

I also see your on the Drumchapel exchange or you used that postcode as a refrence lol.

If your ISP is talktalk that exchange is congested but they wont admit it

Edited by deleted (Wed 30-Dec-15 01:53:09)

In reply to a post by RobertoS:

You rebooted the router about quarter of an hour before taking those stats. Did that make any difference?

That's correct. The reboot made no difference.

In reply to a post by tthom:

Does it only do this at certain times of the day or always? What ISP are you with

I also see your on the Drumchapel exchange or you used that postcode as a refrence lol.

If your ISP is talktalk that exchange is congested but they wont admit it

I have not yet noticed a pattern so I couldn't say for sure, I will certainly be running some speed tests on/off peak. The provider is TalkTalk Business and this is indeed on the Drumchapel exchange.

Also try a different router if the problem persists. Failing that get in touch with TTB network team directly (they answer emails from direct TTB customers)

[email protected]

In reply to a post by baby_frogmella:

Also try a different router if the problem persists. Failing that get in touch with TTB network team directly (they answer emails from direct TTB customers)

[email protected]

Thanks for that I will drop them an e-mail. This is a new router (not using the talk talk one). I have the ASUS RT-AC88U connected to an Openreach modem (unlocked).

I have e-mailed TalkTalk and they have asked me to send in three traceroutes and three pings an hour apart, I have done that both peak and off-peak. It does look like this is an issue at peak time so possibly is congestion and first suggested.

What is going to be the outcome of this? I assume I am going to have to fight with TalkTalk Business to fix this? I assume I would have the same issue across all ISPs? (TalkTalk and Sky are the only LLU providers in this exchange).

My Broadband Ping

Thanks
Sam

Was it you that did the two lengthy disconnections in the middle of the night? Or was it them?

In reply to a post by RobertoS:

Was it you that did the two lengthy disconnections in the middle of the night? Or was it them?

It was them, I was tucked up in bed

Thanks
Sam