From: Dang Quang Minh (minhdq@xxxxxxxxxxxxx)
Date: Mon Jul 08 2002 - 21:33:00 GMT-3
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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