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  • Subject: Re: default route with PPP
  • From: "Jeffrey Silberberg" <jsilberberg@xxxxxxxxxxxxxx>
  • Date: Sat, 23 Jun 2001 19:01:50 -0400

Okay,

        Group, please read carefully before responding to this note.

        The problem is not making a DEFAULT route work, but rather replacing
the DEFAULT route with a backup DEFAULT route when the Primary one is not
available.  In BSD we can use a combination of etc/ppp.conf, etc/ppp.link,
and etc/ppp.linkdown to do this an force the new DEFAULT by overlaying the
DEFAULT link with the "add! default HISADDR" command, using the same command
in the linkdown to back out the override.

         Now on my WIN/95 workstation if I dial an ISP that route becomes
the DEFAULT but if I look at the netstat -rn I  see both the permanent
route, and the new ISP route.  Just the ISP route has a higher priority so
everything not specifically routed will and does go to the ISP.  (I know
this works as I have done it when the DSL gateway router has been down.)

        So what we need here is a way on the iSeries to either temporarily
override the DEFAULT as we do in BSD, or set the priority as Mr. Gates does
for us.  You might also view the links:

http://www.as400service.ibm.com/a_dir/as4ptf.NSF/a18db68aae4a7d81862566ba005
d145c/83a26408fa1d788c8625690d004768a0?OpenDocument

http://www.mentortech.com/learn/welcher/papers/default.htm

for some further insight into this problem.  (Wish Bruce V. was not on
vacation !)

        I am still looking for a specific answer to Carl's question, any
IBMers out there this weekend ?

Jeffrey M. Silberberg
Independent Consultant
CompuDesigns, Inc.
(770) 399-9464

AS SOON AS I KNOW THE ANSWERS
THEY CHANGE THE QUESTIONS


----- Original Message -----
From: Carl Galgano <cgalgano2@ediconsulting.com>
To: <MIDRANGE-L@midrange.com>
Sent: Saturday, June 23, 2001 3:16 PM
Subject: RE: default route with PPP


> Problem with that is that the interface address changes each time I dial
the
> ISP because they assign the IP address via DHCP when I connect w/PPP.
> cjg
>
>
> Carl J. Galgano
> EDI Consulting Services, Inc.
> 550 Kennesaw Avenue, Suite 800
> Marietta, GA  30060
> (770) 422-2995 - voice
> (419) 730-8212 - fax
> mailto:cgalgano@ediconsulting.com
> http://www.ediconsulting.com
> AS400 EDI, Networking, E-Commerce and Communications Consulting and
> Implementation
> http://www.icecreamovernight.com
> Premium Ice Cream Brands shipped Overnight
>
> "You ain't gonna learn what you don't want to know" - rw
>
> -----Original Message-----
> From: owner-midrange-l@midrange.com
> [mailto:owner-midrange-l@midrange.com]On Behalf Of Evan Harris
> Sent: Thursday, June 21, 2001 3:57 PM
> To: MIDRANGE-L@midrange.com
> Subject: Re: default route with PPP
>
>
> Carl
>
> have you tried associating the default routes with a specific interface ?
>
> I seem to remember having the same problem when adding an internet
> connection and bound each of the default routes I needed to a specific
> interface.
>
> Sorry I can't remember the parameters that I added but maybe this will
> point you in the right direction.
>
> Hope this helps
>
> Regards
> Evan Harris
>
> >I am developing some code for a client.  Basically the code will attempt
to
> >FTP to a site on the internet over the company's existing T1.  I ping the
> >FTP server first to see if the route is there.  If I can not get a return
> on
> >my ping I want to start a PPP dial up connection to an ISP, and then do
the
> >FTP over the dial up line.
> >
> >All the pieces work fine, except one.  In my PPP profile I have set that
> the
> >dial up connection gets assigned the default route.  If I currently have
a
> >default route set up in my routing table, the PPP connection will not
work,
> >it says there is already a default route set up.  If I remove the default
> >route on the AS400, the PPP connection works fine and the data is routed
> >over the dial up to the internet.  All of my customer's systems already
> have
> >a default route set up on their AS400 pointing to the local router so the
> >data is moved over their WAN.  The only way I see to solve this problem
is
> >to programmatically remove the default route in the routing table, start
my
> >PTP PPP connection, do my FTP, end the PPP connection and then
> >programmatically add the default route entry back to the AS400.  This
seems
> >less than elegant.  Any better ideas?
> >cjg
>
> +---


+---
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