From: yakout esmat (yesmat@xxxxxxxxxxxxxx)
Date: Fri Apr 19 2002 - 06:40:31 GMT-3
Mas,
Good point.
In first scenario "dialer load-thresold", what you are saying is that
traffic will be load balanced in any case whether per destination (default)
or per packet. But the router will treat both B channels as two separate
links.
In second scenario "PPP Multilink", the router will treat both B channels as
ONE channel, i.e. the concept of load balancing -as we know it in layer 3-
doesn't exist.
In a scenario, If you've been asked to bring up the second B channel and
make sure to equally distribute your traffic among both channels, which
option would you go for.
I would say we have to use "PPP Multilink"
Thanks for your feedback
Ya
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Mas Kato
Sent: Friday, April 19, 2002 4:15 PM
To: yesmat@iprimus.com.au
Cc: ccielab@groupstudy.com
Subject: RE: ISDN PPP Multilink
[demime could not interpret encoding binary - treating as plain text]
Ya,
'dialer load-threshold' sets the threshold for bringing up additional links,
but each remains a discrete link. Any load balancing of traffic across the
links is subject to normal IOS route-caching rules (on=per destination,
off=per packet). Load balancing at layer-3, if you will.
'ppp multilink' provides options on how to handle ppp encapsulated traffic,
including a means to mux traffic across the two (or more) physical links as
if they were one "virtual" pipe (fragmentation). Load balancing at layer-2,
if you will. It also provides a means to control the way the traffic is
"striped" across the links (interleaving and fragment-delay), which can
prove useful when you are trying to share bandwidth between traffic with
significantly differing packet sizes and delay sensitivities (say FTP and
voice).
Regards,
Mas Kato
https://ecardfile.com/id/mkato
P.S. You are so lucky to live in Sydney! Man I love it there. -Cheers
> "yakout esmat" <yesmat@iprimus.com.au> "Groupstudy"
<ccielab@groupstudy.com> ISDN PPP MultilinkDate: Wed, 17 Apr 2002 21:56:27
+1000
>Reply-To: "yakout esmat" <yesmat@iprimus.com.au>
>
>Hi all,
>
>I have a concept problem with PPP Multilink in BRI Interface.
>
>Cisco Documentation states:
>
>1) Don't have to use "PPP Multilink" to bring up the second BRI link when
>needed, only "dialer load-threshold <n>" command is enough to do that, and
>in this case we have to use "bandwidth" command to specify the interface
>bandwidth so that Load-threshold can cancalculate the load on the first
link
>before bringing up the second one.
>
>2) If we use "PPP Multilink" command, "dialer load-threshold 1 " command
can
>no longer bring up both links
>
>My findings contradict all that.
>
>No difference between configuring "PPP Multilink" or not, I can still bring
>up the other link by only using "dialer load-threshold <n>"
>
>I must be missing the point, can any body share views on this one.
>
>Appreciate your help in advance.
>
>Cheers from beautiful Sydney
>
>Ya
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