[pptp-server] Dual DSL Connections and routing

[tytyty]

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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