Forcing a packet through an interface (OT?)

Mario Lobo mlobo at ocp.nlink.com.br
Tue Jul 12 21:24:26 GMT 2005


That sounds close to what I need !!

> > 1) rl0 -----------> router ----------> antenna ------>  ISPx ------> internet

So would it be something like:
route add -host ${ip.of.public.host} netmask 255.255.255.255 gateway ${ip.of.rl0}

is that correct?

In this case that host will be "sacrificed", if rl0 is down.

Do you have any suggestions on time or whois servers? Don't worry
because the pings I send are standard 56 bytes long.

Thanks John !

P.S. - I'm replying to your post from my home e-mail. I made the post from my work e-mail.
-- 
   //|  //||
  // | // ||
-//--//--|| ARIO LOBO
//  //    ||
---------------------------------
mlobo at ocp.nlink.com.br
http://mariolobo.70d.com
http://www.mallavoodoo.com.br


> Mario,
> 
> I think the only way to do what you want is to find two hosts on the
> internet that don't conflict with what you do on a day to day basis. Then
> add custom routes for those two specific hosts, and with those routes, you
> force traffic through each NIC.
> 
> A perfect example of two public servers would be time or whois servers.
> Just be nice and dont ping too much (i.e., only send two "small" pings
> every 2 minutes or something).
> 
> -john
> 
> On Tue, 12 Jul 2005, Mario Lobo wrote:
> 
> > Yeah Stefan. They do take the default route. That is what I am already doing.
> >
> > I even wrote a little prog using a variation of ping to do just that.
> >
> > The problem lies with the fact that, there is a router between my rl0 and the internet.
> >

> >
> > So the fact that i can ping the hop next to rl0 doesn´t mean the link is up :(.
> >
> > That is why I NEED to ping something on the internet.
> >
> > Thanks,
> > --
> >    //|  //||
> >   // | // ||
> > -//--//---|| ARIO LOBO
> > //  //    ||
> > ---------------------------------
> > mario.lobo at ipad.com.br
> > http://www.ipad.com.br
> >
> >
> > On 12 Jul 2005 at 15:48, stsp at stsp.in-berlin.de wrote:
> >
> > > In case you got a static IP on rl0 from ISP x (and rl0 is up),
> > >
> > > 	ping -I <IP of rl0> www.google.com
> > >
> > > might help.
> > >
> > > Just a guess though. Packets might still take the default route, even with -I.
> > >
> > > Good luck,
> > > --
> > > stefan
> > > http://stsp.in-berlin.de                                 PGP Key: 0xF59D25F0
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