[pptp-server] Dual DSL Connections and routing

[George Vieira]

not sure about individual routes on devices as you were saying (correct me
if I'm wrong) that the problem was the default route was going to the wrong
device....???.. argh.. little confused I guess.
M..u..stt...dr.r.aaww....d...i.a..graa...m.!!

You can setup routes using what you said below in the /etc/ppp/ip-up.local
when the devices come online...

what distro are you using and do you have /etc/ppp/ip-up.loca files or
/etc/ppp/ip-up?


thanks,
George Vieira


-----Original Message-----
From: tytyty [mailto:djolivier at bigfoot.nospam.com]
Sent: Thursday, May 24, 2001 10:05 AM
To: George Vieira
Cc: 'Doug Olivier'; vpnd; pptp-server
Subject: Re: [pptp-server] Dual DSL Connections and routing


Im not using Redhat but I belive I understand your point, basically I
should NOT have a default route, but set individual routes on devices as
I was thinking. These are the routes I am going to try:
route add -net 999.1.34.221 netmask 255.255.255.255 gw 999.86.241.1 eth0
< only pointing at home office 
route add -net 0.0.0.0 netmask 0.0.0.0 gw 999.86.241.1 eth2 <- for
internet

Thank you for your response.

George Vieira wrote:
> 
> I think your problem is your network configuration in your system. Is this
> RedHat linux?
> If so, check your /etc/sysconfig/network-scripts/ifcfg-eth0 and remove the
> GATEWAY= settings and put it into ifcfg-eth1
> 
> If it doesn't exist then it may appear in /etc/sysconfig/network and the
> same setting is in there.
> 
> If it's in the /etc/sysconfig/network file then your problem will be as
you
> said "both devices use the same gateway" then use the
> /etc/sysconfig/static-routes file and specify the device NOT the
> gateway..eg.
> 
> eth1 default dev eth1
> 
> not
> 
> eth0 default eth0
> 
> hopefully this will help. Basically make sure on reboot that both ETH
> devices have default gateways turned off then apply the static route via
the
> device (ETH1, or whateva)..
> 
> good luck
> 
> thanks,
> George Vieira
> 
> -----Original Message-----
> From: Doug Olivier [mailto:dolivier at bondedcollections.com]
> Sent: Thursday, May 24, 2001 12:57 AM
> To: vpnd; pptp-server
> Subject: [pptp-server] Dual DSL Connections and routing
> 
> Sorry to cross post to both mailing list but this situation seem to apply
to
> both protocols.
> 
> The Situation:
> 
> Remote office with 2 DSL connections provided by the same ISP.
> 
> This office has been running a vpnd connection to the main facility over 1
> DSL connection for over 90 days. Due to an increase in employees and
> requested Internet browsing, email etc.. We obtained a second DSL line at
> their site.
> 
> Objective:
> 
> Use the original DSL connection for the vpnd link only (15 telnet
> connections to db server). Use the 2nd DSL connection for Internet only
> (web, email).
> 
> Results:
> 
> When I activated the routing for the second DSL using
> route add -net 0.0.0.0 netmask 0.0.0.0 gw 999.86.241.1 eth2
> and adjusted the ipchains to only allow web, email via eth2 it worked
fine.
> The commands were then added to the startup files.
> The vpnd link was already up and running at this time.
> 
> However on a subsequent reboot all access to the internet was lost.
> When I turned off the eth2 connection and removed the route and ipchains
for
> it I was able to reestablish the vpn link and internet access.
> 
> My theory is that the first DSL (eth0) is acquiring the default gw via the
> route add default gw 999.86.241.1 netmask 0.0.0.0 metric 1
> Since both DSL routes use the same gateway.
> 
> Since this is a production box and I have a limited time frame to
manipulate
> it (1-2 hrs. a day)
> I'm looking for suggestions.
> 
> My Ideas:
> 
> Setup 2nd DSL on eth0 and let it have the default route and adjust the
> firewall rules re that interface.
> Setup a static route on the 2nd DSL line to point only at our home office
IP
> (i.e. route add -net 999.1.34.221 netmask 255.255.255.255 gw 999.86.241.1
> eth2 even though that route gets set when vpnd links up.
> 
> Does anyone else have any other ideas, advice, words of wisdom on this
> situation ?
> 
> Douglas J. Olivier
> Network Administrator
> Bonded Collections of Tucson Inc.
> 
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