VDSL Stats - Whats yours?

TheDriver

Got vdsl installed today, cabinet a nice distance away down the road but says on modem profile that down is 98 and up is 18. Wired speed test gives 92 down and 16 up so more than expected.
Wifi of course gives only 48 but that's never full speed

andybroke

I created a profile with a target noise ratio of 2dB today.
23915/3943kbit isnt too bad on a 1.5 km phone line.
Hope it will be stable


AHB_ciscoen>sh controllers vdsl 0
Controller VDSL 0 is UP

Daemon Status: Up

XTU-R (DS) XTU-C (US)
Chip Vendor ID: 'BDCM' 'BDCM'
Chip Vendor Specific: 0x0000 0xA48D
Chip Vendor Country: 0xB500 0xB500
Modem Vendor ID: 'CSCO' ' '
Modem Vendor Specific: 0x4602 0x0000
Modem Vendor Country: 0xB500 0x0000
Serial Number Near: FCZ1530C3DS 887V-SEC 15.3(3)M3
Serial Number Far:
Modem Version Near: 15.3(3)M3
Modem Version Far: 0xa48d

Modem Status: TC Sync (Showtime!)
DSL Config Mode: AUTO
Trained Mode: G.993.2 (VDSL2) Profile 17a
TC Mode: PTM
Selftest Result: 0x00
DELT configuration: disabled
DELT state: not running
Trellis: ON ON
SRA: disabled disabled
SRA count: 0 0
Bit swap: enabled enabled
Bit swap count: 0 0
Line Attenuation: 0.0 dB 0.0 dB
Signal Attenuation: 0.0 dB 0.0 dB
Noise Margin: 2.2 dB 2.1 dB
Attainable Rate: 24704 kbits/s 3943 kbits/s
Actual Power: 14.5 dBm 6.3 dBm
Per Band Status: D1 D2 D3 U0 U1 U2 U3
Line Attenuation(dB): 26.2 74.6 102.3 10.7 60.5 N/A N/A
Signal Attenuation(dB): 26.2 N/A N/A 10.7 59.8 N/A N/A
Noise Margin(dB): 2.2 N/A N/A 2.2 2.1 N/A N/A
Total FECC: 407 0
Total ES: 130 11
Total SES: 64 0
Total LOSS: 21 0
Total UAS: 74973 74973
Total LPRS: 0 0
Total LOFS: 25 0
Total LOLS: 0 0

Full inits: 6
Failed full inits: 0
Short inits: 0
Failed short inits: 0

Firmware Source File Name (version)

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VDSL embedded VDSL_LINUX_DEV_01212008 (1)

Modem FW Version: 130205_1433-4.02L.03.A2pv6C035j.d23j
Modem PHY Version: A2pv6C035j.d23j
Vendor Version: Ap6v35j.23j 68


DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 23915 0 3943
SRA Previous Speed: 0 22812 0 3602
Previous Speed: 0 22812 0 3602
Reed-Solomon EC: 9 2352 0 3473
CRC Errors: 1595 1595 0 0
Header Errors: 0 0 0 0
Interleave (ms): 0.00 0.00 0.00 2.00
Actual INP: 2.01 40.00 0.00 0.00

freelancerTax

Seem to have very high line attenuation on my upstream - im with eir fiber approx 1km from cabinet.

my downspeed is fine (29mps) but my upload is slow (3mbps)
am i wrong in thinking i should be getting closer to 10mps up ?



DSL synchronization status: Up
Connection status: Showtime

Upstream line rate (kbit/s): 3887

Downstream line rate (kbit/s): 30717

Maximum upstream rate (kbit/s): 3976

Maximum downstream rate (kbit/s): 33465

Upstream noise safety coefficient (dB): 5.9

Downstream noise safety coefficient (dB): 7.9

Upstream interleave depth: 0

Downstream interleave depth: 0

Line standard: VDSL

Upstream line attenuation (dB): 60.8

Downstream line attenuation (dB): 21.2

Upstream output power (dBmV): 7.1

Downstream output power (dBmV): 14.4

Downstream interleave depth: None

DSL up time:

ED E

andybroke wrote: »

I created a profile with a target noise ratio of 2dB today.
23915/3943kbit isnt too bad on a 1.5 km phone line.
Hope it will be stable

Pushing it balls to the wall there. If its stable you're very very lucky.

freelancerTax wrote: »

Seem to have very high line attenuation on my upstream - im with eir fiber approx 1km from cabinet.

my downspeed is fine (29mps) but my upload is slow (3mbps)
am i wrong in thinking i should be getting closer to 10mps up ?



DSL synchronization status: Up
Connection status: Showtime

Upstream line rate (kbit/s): 3887

Downstream line rate (kbit/s): 30717

Maximum upstream rate (kbit/s): 3976

Maximum downstream rate (kbit/s): 33465

Upstream noise safety coefficient (dB): 5.9

Downstream noise safety coefficient (dB): 7.9

Upstream interleave depth: 0

Downstream interleave depth: 0

Line standard: VDSL

Upstream line attenuation (dB): 60.8

Downstream line attenuation (dB): 21.2

Upstream output power (dBmV): 7.1

Downstream output power (dBmV): 14.4

Downstream interleave depth: None

DSL up time:

US Attn as measured by the CPE is very unreliable and not hugely useful diagnostically.

DS Atten would hint its closer to 1.5KM than 1KM in cabling, could that be right? You're barely at the 30 limit and really its pushing things too far. That puts you down at the 25_7 profile but still US would be low. So if 1KM is right, your line has a quality issue. If 1.5 or 1.6KM is correct you probably should be much lower(slower).

freelancerTax

ED E wrote: »

Pushing it balls to the wall there. If its stable you're very very lucky.




US Attn as measured by the CPE is very unreliable and not hugely useful diagnostically.

DS Atten would hint its closer to 1.5KM than 1KM in cabling, could that be right? You're barely at the 30 limit and really its pushing things too far. That puts you down at the 25_7 profile but still US would be low. So if 1KM is right, your line has a quality issue. If 1.5 or 1.6KM is correct you probably should be much lower(slower).

hi thanks for the info,
i am less than 1km from the cabinet. my connection is stable its just my upload that is slow. if the line is an issue is there anything that can be done about it?

ED E

Is the modem at the master where KNN installed it with the cable they used? If so its time to call your provider and have them investigate.

freelancerTax

ED E wrote: »

Is the modem at the master where KNN installed it with the cable they used? If so its time to call your provider and have them investigate.

yes its at the master socket ... i will contact eir.. should i say its a line fault? or how should i describe it

thanks
ft

ED E

Just be straight with them, for your location and downstream speed your upstream is relatively very low. I suspect once they run the standard test battery they'll see a flaw.

freelancerTax

ED E wrote: »

Just be straight with them, for your location and downstream speed your upstream is relatively very low. I suspect once they run the standard test battery they'll see a flaw.

thanks alot for the info ed e
i will contact them next week to get sorted i hope!!
ft

KeRbDoG

1.5~1.6k from the cab - the upload changes between 2.7ish to 3.4ish.

Fairly stable, about once every 2 weeks though it drops out.

   VDSL Training Status:   Showtime
                    Mode:   VDSL2 Annex B
            VDSL Profile:   Profile 17a
                G.Vector:   Enable
            Traffic Type:   PTM Mode
             Link Uptime:   3 days: 12 hours: 30 minutes
====================================================================================
       VDSL Port Details       Upstream         Downstream
               Line Rate:      2.751 Mbps       30.718 Mbps
    Actual Net Data Rate:      2.752 Mbps       30.719 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        9.2 dB           10.7 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:        7.2 dBm          14.2 dBm
           Receive Power:       -9.6 dBm         -18.2 dBm
              Actual INP:       12.0 symbols      30.0 symbols
       Total Attenuation:        0.0 dB          27.2 dB
Attainable Net Data Rate:      2.763 Mbps       34.276 Mbps
====================================================================================
  VDSL Band Status        U0      U1      U2      U3      U4      D1      D2      D3
  Line Attenuation(dB):	 10.0	 59.0	 75.4	  N/A	  N/A	 24.5	 72.6	  N/A	
Signal Attenuation(dB):	 10.0	 58.2	  N/A	  N/A	  N/A	 32.2	 73.1	  N/A	
        SNR Margin(dB):	 9.1	 9.2	  N/A	  N/A	  N/A	 10.8	 9.9	  N/A	
         TX Power(dBm):	 0.3	 6.2	  N/A	  N/A	  N/A	 13.9	 2.7	  N/A