Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
   Glossary   Glossary
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: [1] 2

Author Topic: Best way to change modem without DLM intervention?  (Read 6762 times)

digitalnemesis

  • Reg Member
  • ***
  • Posts: 403
Best way to change modem without DLM intervention?
« on: April 20, 2016, 09:39:42 PM »

Is it better to unplug the power cable or the RJ11 cable when switching modems?

Wait 30 minutes or more to be safe?
Logged

William Grimsley

  • Kitizen
  • ****
  • Posts: 1489
    • Newton Poppleford Weather
Re: Best way to change modem without DLM intervention?
« Reply #1 on: April 20, 2016, 09:49:49 PM »

Is it better to unplug the power cable or the RJ11 cable when switching modems?

Wait 30 minutes or more to be safe?

Well, coming from someone who wanted to induce it, you probably won't trust me. :lol:

Anyway, I always power off the modem then switch modems and yes leave it for 30 minutes just incase, though 1 disconnection won't evoke DLM.
Logged

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: Best way to change modem without DLM intervention?
« Reply #2 on: April 20, 2016, 10:50:53 PM »

I would say that it is best to pull the power lead. If you only do one reboot then it probably isn't necessary, but otherwise it is a wise idea to wait 30 mins with the modem off, to get over the next 15 min time period boundary.
Logged

skyeci

  • Kitizen
  • ****
  • Posts: 1383
    • Line stats
Re: Best way to change modem without DLM intervention?
« Reply #3 on: April 21, 2016, 05:54:46 AM »

Is it better to unplug the power cable or the RJ11 cable when switching modems?

Wait 30 minutes or more to be safe?

Always pull the dsl lead first. Never had an issue that way provided I go with the 31 minute rule.

roseway

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 43467
  • Penguins CAN fly
    • DSLstats
Re: Best way to change modem without DLM intervention?
« Reply #4 on: April 21, 2016, 07:15:05 AM »

I have to disagree with the above. If you only do it occasionally it will probably make no difference, but the safest from a DLM point of view is to power down the modem.
Logged
  Eric

digitalnemesis

  • Reg Member
  • ***
  • Posts: 403
Re: Best way to change modem without DLM intervention?
« Reply #5 on: April 21, 2016, 08:23:37 AM »

I have to disagree with the above. If you only do it occasionally it will probably make no difference, but the safest from a DLM point of view is to power down the modem.

Is there a shutdown command for the HG612?
Logged

PhilipD

  • Reg Member
  • ***
  • Posts: 591
Re: Best way to change modem without DLM intervention?
« Reply #6 on: April 21, 2016, 01:34:50 PM »

Hi

I have to disagree with the above. If you only do it occasionally it will probably make no difference, but the safest from a DLM point of view is to power down the modem.

Is there a shutdown command for the HG612?

If you can telnet in to a modem and it's Broadcom then:

Code: [Select]
xdslctl connection --down
Feels like a nice way to disconnect, then power down or reboot the modem.  On rebooting or restarting the connection will come back up.

Regards

Phil
Logged

Dray

  • Kitizen
  • ****
  • Posts: 2361
Re: Best way to change modem without DLM intervention?
« Reply #7 on: April 21, 2016, 01:41:57 PM »

No such command as XDSLCTL use XDSLCMD instead
Logged

ejs

  • Kitizen
  • ****
  • Posts: 2078
Re: Best way to change modem without DLM intervention?
« Reply #8 on: April 21, 2016, 05:11:20 PM »

It depends on the modem firmware, it may be called xdslctl on some devices.
Logged

roseway

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 43467
  • Penguins CAN fly
    • DSLstats
Re: Best way to change modem without DLM intervention?
« Reply #9 on: April 21, 2016, 06:28:37 PM »

There are several different command prefixes, depending on the hardware manufacturer. If you scroll down this page you'll see a selection of them.

(Note to self: it's time I updated that in respect of 'routers'.)
Logged
  Eric

digitalnemesis

  • Reg Member
  • ***
  • Posts: 403
Re: Best way to change modem without DLM intervention?
« Reply #10 on: April 21, 2016, 07:57:33 PM »

Hi

I have to disagree with the above. If you only do it occasionally it will probably make no difference, but the safest from a DLM point of view is to power down the modem.

Is there a shutdown command for the HG612?

If you can telnet in to a modem and it's Broadcom then:

Code: [Select]
xdslctl connection --down
Feels like a nice way to disconnect, then power down or reboot the modem.  On rebooting or restarting the connection will come back up.

Regards

Phil

What does that do exactly? Does it send a last gasp for DLM to pick up?
Logged

skyeci

  • Kitizen
  • ****
  • Posts: 1383
    • Line stats
Re: Best way to change modem without DLM intervention?
« Reply #11 on: April 21, 2016, 08:13:39 PM »

Interestingly BT OR engineer was here yesterday. He did not power down the modem. Just removed the dsl lead. In fact he didn't even reboot the modem before plugging it back in or wait 30 mins before resyncing the modem without performing a dlm reset . The result actually resulted in a 1mb increase on the ds  :lol:

kitz

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 33879
  • Trinity: Most guys do.
    • http://www.kitz.co.uk
Re: Best way to change modem without DLM intervention?
« Reply #12 on: April 21, 2016, 10:07:02 PM »

DLM itself does not use dying gasp.... 

However I read in some BT doc or other (cant recall for the life of me where) that dying gasp can be used by the ISPs to check that a customer has powered down a modem when told to do so as part of their fault finding process.
Logged
Please do not PM me with queries for broadband help as I may not be able to respond.
-----
How to get your router line stats :: ADSL Exchange Checker

Black Sheep

  • Helpful
  • Addicted Kitizen
  • *
  • Posts: 5717
Re: Best way to change modem without DLM intervention?
« Reply #13 on: April 21, 2016, 10:11:50 PM »

I may be wrong ............ but I can't ever recall in all the years of BB faulting, receiving any info from the Chief Engineers Office regarding the 'Dying gasp', and/or unplugging the power first before working on the circuit ?.

I'm not saying whatsoever that it does or doesn't play a part, I'm simply surmising as to the impact of unplugging the DSL lead first as opposed to cutting the power, due to us not receiving any guidance from them above ?? They usually inform us rapido-style if something has been found that would seriously affect the circuit ?  :-\ :-\
Logged

NewtronStar

  • Kitizen
  • ****
  • Posts: 4898
Re: Best way to change modem without DLM intervention?
« Reply #14 on: April 21, 2016, 10:16:04 PM »

We forgot to mention this when you have done a 30 minute power off you must leave the modem on for another 30 minutes before the next power off

This should give you a retrain reason 0 each time if you don't you will see a retain reason 1 which is not good.
Logged
Pages: [1] 2
 

anything