RE: ISDN & ppp multilink things...

From: Anthony Pace (anthonypace@xxxxxxxxxxx)
Date: Wed Jul 10 2002 - 21:21:26 GMT-3


   
If I am doing PPP MULTILINK should I use the PPP MULTILINK version of
the load-threshold command? All the books do not use that. They use
dialer load-threshhold.

Anthony Pace

On Tue, 9 Jul 2002 11:12:13 +1000 , "Tony Huang"
<thuang@tdwaterhouse.com.au> said:
> If your isdn configured with two spids, you will have to employ two map
> statements. For the isdn with only one number,but two channels without spid
> support, you cannot use two maps but just one. By keying dialer threshold
> you will be able to bring up a second channel provided the threshold is me.
>
> Tony
>
>
> -----Original Message-----
> From: Dang Quang Minh [mailto:minhdq@saigonctt.com]
> Sent: Tuesday, 9 July 2002 10:33 AM
> To: 'Anthony Pace'; 'Carlos G Mendioroz'; 'Oliver Boehmer'
> Cc: 'Groupstudy ccielab list'
> Subject: RE: ISDN & ppp multilink things...
>
>
> The ppp multilink command is used on ISDN interface to bundle both
> 64Kbps channels so they function together as 128kbps pipe.
>
> The dialer load thres-hold command specidies how much traffic on the
> first channel will force the second channel to be brought up. This
> command take a numerical argument from 1 255. The number 1 is the
> minimum load and the number 255 is a full load. Using this system, 128
> would be approximately a 50% load.
>
> So, if you use only one dialer map and you used load-threshold, you can
> still bring up another BRI. If you use ppp multilink, you should use 2
> dialer maps for two B channels and the load-threshold command.
>
> HTH
> Minh
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Anthony Pace
> Sent: Tuesday, July 09, 2002 3:53 AM
> To: Carlos G Mendioroz; Oliver Boehmer
> Cc: Groupstudy ccielab list
> Subject: Re: ISDN & ppp multilink things...
>
> So if only one dial map existed and you used "load-threshold", would it
> bring up another BRI and put every other PPP frame onto each of the 2
> BRI's?
>
> Or would you need 2 dial maps?
>
> If you use PPP multilink, then is it best to use the same generic
> "load-threshold" command or the PPP multilink version of the command?
> I would think that PPP multilink puts traffic accross the links in some
> very low level or bit level load balancing. Is that the difference
> between using "load-threshold" without multilink and "PPP multilink"?
>
> Anthony Pace
>
>
>
>
>
> On Sat, 29 Jun 2002 17:49:58 -0300, "Carlos G Mendioroz"
> <tron@huapi.ba.ar> said:
> > Oliver Boehmer wrote:
> > >
> > > At 14:59 29.06.2002 -0300, Carlos G Mendioroz wrote:
> > > >Hi,
> > > >just going over ISDN things, some I have not been able to clarify:
> > > >
> > > >-using load-threshold, you can bring 2 (or more?) B channels into
> > > >a link using ppp but without ppp multilink. What's the protocol
> used
> > > >then ?
> > >
> > > None, it's basically standard load-sharing over multiple, parallel
> links.
> > > There are no such things as interleaving or fragmentation without
> PPP
> > > multilink, though..
> >
> > This is not standard, as you got only one layer3 interface (bri0/0 in
> my
> > case)
> > and only one fib entry. There must be some protocol controling this...
> > Also, the balancing is done packet by packet, even though I have not
> > disabled
> > fast switching...
> >
> > >
> > > >-when MPP is used, a virtual-access interface is created and the
> info on
> > > >seconds left and seconds idle from "show isdn active" vanishes...
> > > >How do you see that info ?
> > >
> > > Hmm, which IOS are you using? Try "show caller" or "show caller
> timeout"..
> > >
> > Nope,
> > 12.1.13
> > Idle time is gone from there too:
> >
> > #sh caller
> > Active Idle
> > Line User Service Time Time
> > con 0 - TTY 03:16:11 00:00:00
> > BR0/0:1 2602 PPP 00:00:16 -
> > #sh isdn act
> >
> ------------------------------------------------------------------------
> --------
> > ISDN ACTIVE CALLS
> >
> ------------------------------------------------------------------------
> --------
> > Call Calling Called Remote Seconds Seconds Seconds
> > Charges
> > Type Number Number Name Used Left Idle
> > Units/Currency
> >
> ------------------------------------------------------------------------
> --------
> > In +ne number> ---N/A--- 2602 91 - -
> >
> ------------------------------------------------------------------------
> --------
> >
> >
> >
> > > oli
> >
> >
> > --
> > Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina



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