Mailinglist Archive: opensuse (1483 mails)

[Per Jessen <per@xxxxxxxxxxxx>]

phanisvara das wrote:

> On Sun, 26 Feb 2012 20:21:06 +0530, James Knott
> <james.knott@xxxxxxxxxx> wrote:
>
> > Per Jessen wrote:
> > > Yep, I have a number of servers in just such a setup - each server
> > > has two possible outbound paths, but the kernel cannot know which
> > > one is
> > > actually available, so I control that manually (scripted).  (three
> > > options: left is up, right is up, both are up).
> >
> > When both are up, how do you select?  Are both on the same ISP?  If
> > not, you have to use some method to determine which becomes the
> > default
> > route.  It is possible in Linux to have two or more ISPs and then a
> > TCP connection uses one or the other for the duration of the
> > connection. But again, there has to be some mechanism to chose a
> > default route.
>
> yes, i wasn't commenting on the no. of possible default routes (i've
> got only one at a time), but on the no. of routing tables in use.
>
> i _think_ i could have one default route / table (not sure), but while
> this might be possible according to  the ip command, it wouldn't make
> logical sense.

It does make sense - you will only have one active routing table per
package, without a default route any traffic with external destination
won't go anywhere. 


-- 
Per Jessen, Zürich (5.5°C)

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