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deleted
(deleted) Sat 22-Sep-18 09:07:35

RTX Low Possible?

[link to this post]

Hi guys,

I've seen that many people have managed to force DLM to change the RTX level from high to low, by capping the downstream line rate. I would appreciate it if someone can analyse my stats below, to see if it's likely that DLM will do this on my line.

Text

adsl info --stats
adsl: ADSL driver and PHY statusStatus: Showtime
Last Retrain Reason:    0Last initialization procedure status:   0
Max:    Upstream rate = 8554 Kbps, Downstream rate = 54973 KbpsBearer: 0, Upstream rate = 8554 Kbps, Downstream rate = 29999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 KbpsLink Power State:       L0
Mode:                   VDSL2 Annex BVDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)Trellis:                U:ON /D:ON
Line Status:            No DefectTraining Status:        Showtime
                Down            UpSNR (dB):        16.1            6.7
Attn(dB):        26.5            0.0Pwr(dBm):        12.0            6.4
                         VDSL2 framing
                        Bearer 0MSGc:           -6              -6
B:              65              227M:              1               1
T:              0               0R:              6               10
S:              0.0000          0.0000L:              8340            2246
D:              8               4I:              72              238
N:              72              238Q:              8               4
V:              6               0RxQueue:                125             15
TxQueue:                25              5G.INP Framing:          18              18
G.INP lookback:         25              5RRC bits:               24              24
                        Bearer 1MSGc:           90              58
B:              0               0M:              2               2
T:              2               2R:              16              16
S:              10.6667         16.0000L:              24              16
D:              1               1I:              32              32
N:              32              32Q:              0               0
V:              0               0RxQueue:                0               0
TxQueue:                0               0G.INP Framing:          0               0
G.INP lookback:         0               0RRC bits:               0               0
                         Counters
                        Bearer 0OHF:            0               0
OHFErr:         0               0RS:             3279058680              1946864
RSCorr:         165472          5857RSUnCorr:       0               0
                        Bearer 1OHF:            3538614         407616
OHFErr:         0               0RS:             21231315                1328474
RSCorr:         11584           6RSUnCorr:       0               0
                         Retransmit Counters
rtx_tx:         2146520         42rtx_c:          119297          674
rtx_uc:         0               75944 
                        G.INP CountersLEFTRS:         0               135
minEFTR:        29978           8553errFreeBits:    26148303                115318745
                         Bearer 0
HEC:            0               0OCD:            0               0
LCD:            0               0Total Cells:    3278163157              0
Data Cells:     62483521                0Drop Cells:     0
Bit Errors:     0               0 
                        Bearer 1HEC:            0               0
OCD:            0               0LCD:            0               0
Total Cells:    0               0Data Cells:     0               0
Drop Cells:     0Bit Errors:     0               0
 ES:             0               0
SES:            0               0UAS:            256             256
AS:             56854 
                        Bearer 0INP:            54.00           47.00
INPRein:        1.00            0.00delay:          0               0
PER:            0.00            0.00OR:             0.01            0.01
AgR:            30461.01        8573.03 
                        Bearer 1INP:            2.50            4.00
INPRein:        2.50            4.00delay:          0               0
PER:            16.06           16.06OR:             47.81           31.87
AgR:            47.81   31.87 
Bitswap:        22717/25486             311/317 
Total time = 15 hours 53 min 45 secFEC:            195016          5859
CRC:            0               0ES:             0               0
SES:            0               0UAS:            256             256
LOS:            0               0LOF:            0               0
LOM:            0               0Latest 15 minutes time = 8 min 45 sec
FEC:            1162            0CRC:            0               0
ES:             0               0SES:            0               0
UAS:            0               0LOS:            0               0
LOF:            0               0LOM:            0               0
Previous 15 minutes time = 15 min 0 secFEC:            1606            0
CRC:            0               0ES:             0               0
SES:            0               0UAS:            0               0
LOS:            0               0LOF:            0               0
LOM:            0               0Latest 1 day time = 15 hours 53 min 45 sec
FEC:            195016          5859CRC:            0               0
ES:             0               0SES:            0               0
UAS:            256             256LOS:            0               0
LOF:            0               0LOM:            0               0
Previous 1 day time = 0 secFEC:            0               0
CRC:            0               0ES:             0               0
SES:            0               0UAS:            0               0
LOS:            0               0LOF:            0               0
LOM:            0               0Since Link time = 15 hours 47 min 33 sec
FEC:            165472          5857CRC:            0               0
ES:             0               0SES:            0               0
UAS:            0               0LOS:            0               0
LOF:            0               0LOM:            0               0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

Thanks,

Will

Edited by deleted (Sat 22-Sep-18 09:11:06)

deleted
(deleted) Sat 22-Sep-18 10:19:22

Re: RTX Low Possible?

[re: deleted] [link to this post]

Also, can anyone advise as to why re-transmissions would just suddenly stop like this? They've stopped several times in the past and sometimes for a few hours at a time. I can't find anything in the house that turns off when this occurs...

http://prntscr.com/kxcf6p

Edited by deleted (Sat 22-Sep-18 10:22:34)

Ixel
(committed) Sat 22-Sep-18 11:42:34

Re: RTX Low Possible?

[re: deleted] [link to this post]

Your current stats indicate that your downstream is still on 'retransmission high'.

Text
1	INPRein: 1.00

This needs to be 0.00 for it to be 'retransmission low'.

j0hn83
(experienced) Sat 22-Sep-18 11:54:53

Re: RTX Low Possible?

[re: deleted] [link to this post]

Your line is heavily banded at 30Mb.
I would be more interested in fixing that than getting a tiny increase in throughput.

Retransmission Low offers less protection than Retransmission High and considering your line is banded so heavily I wouldn't be trying to decrease protection.

Pointless adding a cap anyway... it's capped by the DSLAM.

That's a much heavier cap than would be needed to get retx low so your line doesn't want to go there.

Edited by j0hn83 (Sat 22-Sep-18 11:55:51)

deleted
(deleted) Sat 22-Sep-18 13:56:50

Re: RTX Low Possible?

[re: j0hn83] [link to this post]

John, sorry I didn't make it clear. I've capped it...

Edited by deleted (Sat 22-Sep-18 13:57:36)

RobertoS
(elder) Sat 22-Sep-18 13:57:58

Re: RTX Low Possible?

[re: Ixel] [link to this post]

In reply to a post by Ixel:
Your current stats indicate that your downstream is still on 'retransmission high'.
Text
1
INPRein:        1.00
This needs to be 0.00 for it to be 'retransmission low'.

And even that doesn't zeroise retransmissions. (Ref the second post by the OP).

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 68038/12542Kbps @ 600m. BQMs - IPv4 & IPv6

deleted
(deleted) Sat 22-Sep-18 14:01:59

Re: RTX Low Possible?

[re: RobertoS] [link to this post]

Bob, I know it doesn't. I'm not wanting to stop the retransmissions, I was wondering why they suddenly stop and start, for no apparent reason? Plus, I also know that INPRein has to drop from 1 to 0, too, hence why I know the downstream is 'retransmission high'.

Edited by deleted (Sat 22-Sep-18 14:02:53)

RobertoS
(elder) Sat 22-Sep-18 14:07:58

Re: RTX Low Possible?

[re: deleted] [link to this post]

Ref that second post of yours, presumably there is somewhere along the line that someone else turns things off then back on, and it is that causing the zeroising for a while of the retransmissions.

It's a pity in a way you have hijacked your own thread with a different Subject altogether from the opening one. It just causes confusion.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 68038/12542Kbps @ 600m. BQMs - IPv4 & IPv6

j0hn83
(experienced) Sat 22-Sep-18 14:22:22

Re: RTX Low Possible?

[re: deleted] [link to this post]

In reply to a post by WilliamGrimsley:
John, sorry I didn't make it clear. I've capped it...

Indeed.
I'm wondering why you were asking for advice on capping your line and then posting stats that you've already done it.

You should probably have linked to the relevant thread on kitz as anyone who doesn't use that site probably has no idea what you're talking about.

To the point, the cap you have placed is more than sufficient for most lines.
Some lines just refuse to go to Retransmission Low though, even after weeks of capping.

I've only seen the rtx_tx drop like that from interference caused by powerline adapters.
This was on my own line.
I was using a Powerline adapter for my YouView multicast channels and any time I was sending data over the powerline my FEC and rtx_tx shot up considerably.
FEC would go from roughly 1,000/min to 10,000+/min.
rtx_tx would increase from 10/min to about 100/min.

As soon as I stopped watching using data over the powerline kit then the numbers would immediately go back to the lower levels.

Having the plug socket that was right next to my master socket removed fixed this instantly.
I wasn't even using that socket but it made no difference, the electrical wiring ran parallel to the incoming phone line.
The socket and its wiring was removed and those symptoms haven't returned since.

deleted
(deleted) Sat 22-Sep-18 14:38:47

Re: RTX Low Possible?

[re: j0hn83] [link to this post]

In reply to a post by j0hn83:
I'm wondering why you were asking for advice on capping your line and then posting stats that you've already done it.

Because I wasn't asking for advice on that?! I was wondering if the stats I posted would be good enough for DLM to reduce the level of retransmission to low.

In reply to a post by j0hn83:
You should probably have linked to the relevant thread on kitz as anyone who doesn't use that site probably has no idea what you're talking about.

Agreed, sorry. Here it is: https://forum.kitz.co.uk/index.php/topic,22086.0.html

In reply to a post by j0hn83:
I've only seen the rtx_tx drop like that from interference caused by powerline adapters.
This was on my own line.
I was using a Powerline adapter for my YouView multicast channels and any time I was sending data over the powerline my FEC and rtx_tx shot up considerably.
FEC would go from roughly 1,000/min to 10,000+/min.
rtx_tx would increase from 10/min to about 100/min.

As soon as I stopped watching using data over the powerline kit then the numbers would immediately go back to the lower levels.

Having the plug socket that was right next to my master socket removed fixed this instantly.
I wasn't even using that socket but it made no difference, the electrical wiring ran parallel to the incoming phone line.
The socket and its wiring was removed and those symptoms haven't returned since.

I'm also using powerline adapters, but there was no change in what was being used by them during the decrease/increase in retransmissions. Maybe most of the retransmissions are being caused by something that's outside of the house, that I can't control. LOL. Unfortunately, the electrical wiring/sockets that give power to the devices in the room where the router is, cannot be moved. But, I don't think it's that because sometimes the FECs/retransmissions stop completely for minutes at a time.

Edited by deleted (Sat 22-Sep-18 14:42:02)

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