Ric:
To complement Jeff useful info:
> On Tue, 11 Jun 2002, Richard Amerman wrote:
> > As some of you may have noted I am working on a Bering configuration
> > with a main external interface at eth0 of a DSL router and an
> > additional external connection consisting of an external modem for
> > redundant failover.
>
> I have been playing with a dsl/ppp connection for a couple of days. I am
> not sure I need a redundant failover though... I can make it work
> manually if I need to.
>
> > I have had no problem getting the modem to work and it looks like the
> > firewall portion may not be too bad (knock on wood!) but I can't
> > seem to get past the existing defaultroute.
>
> I did:
>
> ifdown eth0
> ifup ppp0
If you want to see the commands executed "behind" ifup/down use the -v flag
ifdown -v eth0
if a "gateway" statement appears in your interface list it will be used to
defined the default route
E.G with :
iface eth2 inet static
address 192.168.1.100
masklen 24
gateway 192.168.1.7
broadcast 192.168.1.255
in /etc/network/interfaces, you will get:
# ifup -v eth2
Configuring interface eth2=eth2 (inet)
run-parts /etc/network/if-pre-up.d
ip addr add 192.168.1.100/24 dev eth2 broadcast 192.168.1.255
ip link set eth2 up
ip route replace default via 192.168.1.7 dev eth2
run-parts /etc/network/if-up.d
> to switch from dsl to ppp, and have commented out the "auto ppp0" line in
> /etc/network/interfaces.
whenever an "auto" statement appears before an interface name it will be
called automatically at boot time (and boot time only) by the ifup -a
statement in /etc/init.d/networking. With no "auto" statement you have to
activate the interface with ifup/ifdown
<snip>
> > I also experimented with settings in the interfaces config file in the
> > "ppp0" interface section. The default is auto ppp0
> > iface ppp0 inet ppp
> > provider provider
> >
> > I changed this to :
> > auto ppp0
> > iface ppp0 inet ppp
> > Address xxx.xxx.xxx.xxx
> > Masklen 27
> > Gateway xxx.xxx.xxx.xxx
> >
> > I'm not sure this is appropriate but I could not find further
> > documentation on this file to indicate whether I can use these
> > settings with a ppp interface, and even if I can, that it is
> > appropriate.
Once again ifup -v ppp0 will show you that "provider provider" will just run
"pon provider". Therefore whatever ppp options must be setup in
/etc/ppp/peers/provider file
Hope that help. If you feel like writing an "how-to" on the failover setup
I'll hapilly include it in the Bering user's guide
Jacques
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