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#1 December 11 2020

LifeEngineer
Member

Ping in DSL vs VDSL

So I decided to make this thread to avoid cluttering other threads.

Long story short,
Ogero FTTC cabinet is like 50m away from my house.
I was on ogero DSL (15/1mbps connection) but with interleaving off, my ping in most games was around 50 to 80ms.
Then I switched to VDSL (30/9mbps connection) and my ping immediately jumped like 30ms at least. No hardware changes whatsoever neither from my side nor from ogero side.
Called them many times after that to turn interleaving off and they confirmed that it's already off.

I expected much better/lower ping with the better upload. So what is it all about? Is that a known issue with VDSL? Anything I can do to keep VDSL but get the better ping I had before?

Last edited by LifeEngineer (December 11 2020)

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#2 December 12 2020

duke-of-bytes
Member

Re: Ping in DSL vs VDSL

It is a DLM issue , sometime it can add up to 32 ms of delay

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#3 December 12 2020

Beta0
Member

Re: Ping in DSL vs VDSL

LifeEngineer wrote:

Called them many times after that to turn interleaving off and they confirmed that it's already off.

Have you checked the modem info for interleaving?
DLM is not VDSL exclusive.

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#4 December 12 2020

DNA
Member

Re: Ping in DSL vs VDSL

duke-of-bytes wrote:

It is a DLM issue , sometime it can add up to 32 ms of delay

there is no DLM in lebanon on adsl and am pretty sure it is same on VDSL i might be wrong though , they only use fixed profiles
@lifeengineer post your stats

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#5 December 13 2020

Kareem
Member

Re: Ping in DSL vs VDSL

why don't you post traceroute... it tells the whole story.

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#6 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

How to get those stats and traceroute guys?

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#7 December 13 2020

anayman_k7
Member

Re: Ping in DSL vs VDSL

Just call "tracert 8.8.8.8" in Windows command line

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#8 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Is that good?

Tracing route to dns.google [8.8.8.8]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.0.1
  2    <1 ms    <1 ms    <1 ms  192.168.1.1
  3    24 ms    24 ms    24 ms  172.30.96.51
  4    23 ms    23 ms    23 ms  172.30.96.1
  5    61 ms    61 ms    61 ms  dns.google [8.8.8.8]

Trace complete.

Last edited by LifeEngineer (December 13 2020)

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#9 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Also in my router settings, there's the Network/DSL settings page, having those values:
//
DSL Settings
DSL Modulation Type: Auto Sync-up
Annex Type: Annex A
Bit Swap: Enable
SRA: Enable
//
For DSL Modulation Type there are these options: Auto Sync-up; ADSL Auto Sync-up; VDSL2; T1.413; G.dmt; ADSL2; ADSL2+.
As for Annex Type there are these options: Annex A; Annex I; Annex A/L; Annex A/I/L.

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#10 December 13 2020

Beta0
Member

Re: Ping in DSL vs VDSL

ADSL2+ syncing at 13Mbit no interleaving trace:
traceroute to 8.8.8.8 (8.8.8.8) from 192.168.2.3, 30 hops max, 46 byte packets
1  192.168.2.1 (192.168.2.1)  8.668 ms  2.210 ms  1.107 ms
2  172.30.224.110 (172.30.224.110)  7.805 ms  10.422 ms  7.292 ms
3  dns.google (8.8.8.8)  53.896 ms  54.040 ms  52.979 ms

image.png

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#11 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Sorry I'm not a telco guy (although i love tech and have some minor idea) but this is a bit much for me.
What does all that mean @Beta0?! How do I get such table?! Am I doing anything wrong?!

Last edited by LifeEngineer (December 13 2020)

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#12 December 13 2020

Beta0
Member

Re: Ping in DSL vs VDSL

LifeEngineer wrote:

Sorry I'm not a telco guy (although i love tech and have some minor idea) but this is a bit much for me.
What does all that mean @Beta0?! How do I get such table?! Am I doing anything wrong?!

Not all modems show much info unfortunately, the table shows interleaving status, 1 is disabled, I don't know what hardware you're using.
I posted traceroute for a simple comparison, did you get ~60ms on ADSL2 before? You can change the modulation back to ADSL2+ and test. ("Auto sync up" field)

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#13 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

From my router status:

Line Status: Connected
DSL Up Time: 4 days 5 hours 50 minutes
DSL Modulation Type: VDSL2
Annex Type: Annex A
                                     Upstream                   Downstream
Current Rate (kbps)    10000                        45196
Max Rate (kbps)             16522                         50495
SNR Margin (dB)              14.3                           9.6
Line Attenuation (dB)        3.7                          12.9
Errors (pkts)                         5                               89284

Last edited by LifeEngineer (December 13 2020)

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#14 December 13 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Beta0 wrote:
LifeEngineer wrote:

Sorry I'm not a telco guy (although i love tech and have some minor idea) but this is a bit much for me.
What does all that mean @Beta0?! How do I get such table?! Am I doing anything wrong?!

Not all modems show much info unfortunately, the table shows interleaving status, 1 is disabled, I don't know what hardware you're using.
I posted traceroute for a simple comparison, did you get ~60ms on ADSL2 before? You can change the modulation back to ADSL2+ and test. ("Auto sync up" field)

Never tried such command on ADSL.
I will try that and see. Thanks for your help mate

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#15 December 13 2020

nefe_lpmk
Member

Re: Ping in DSL vs VDSL

Once you are on VDSL, you can't change back to modulation to ADSL.

Last edited by nefe_lpmk (December 14 2020)

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#16 December 14 2020

Beta0
Member

Re: Ping in DSL vs VDSL

nefe_lpmk wrote:

Once you are on VDSL, you can't change back to modulation to VDSL.

Did they change your port (cabinet) when you requested VDSL?

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#17 December 14 2020

Kareem
Member

Re: Ping in DSL vs VDSL

LifeEngineer wrote:

Is that good?

Tracing route to dns.google [8.8.8.8]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.0.1
  2    <1 ms    <1 ms    <1 ms  192.168.1.1
  3    24 ms    24 ms    24 ms  172.30.96.51
  4    23 ms    23 ms    23 ms  172.30.96.1
  5    61 ms    61 ms    61 ms  dns.google [8.8.8.8]

Trace complete.

You have interleaving ON....

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#18 December 15 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Beta0 wrote:
nefe_lpmk wrote:

Once you are on VDSL, you can't change back to modulation to VDSL.

Did they change your port (cabinet) when you requested VDSL?

I really don't know. Can I know figure that now somehow?!

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#19 December 15 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Kareem wrote:

You have interleaving ON....

May I ask how did you know that?! (just so I know what to tell ogero guy when i call him)

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#20 December 15 2020

Kareem
Member

Re: Ping in DSL vs VDSL

e49603fdc1c5b6818085eaf039bb338d.png

When interleaving is ON there's a 20-30 ms to the first hop outside your network. When it's off it's in the few ms range.

Last edited by Kareem (December 15 2020)

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#21 December 16 2020

LifeEngineer
Member

Re: Ping in DSL vs VDSL

Thanks guys you are awesome! Finally they turned interleaving off after like 3 previous calls where they confirmed that it was off, but obviously it wasnt!

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