[Xorp-users] wanted: OSPF metrics per neighbor. can vif help?

[Kristian Larsson]

On Thu, Nov 10, 2005 at 01:48:04AM -0500, Nick Feamster wrote:
> On Thu, Nov 10, 2005 at 06:25:03AM +0100, Kristian Larsson wrote:
> > > I understand what the RFC says, and sticking to standards seems like a
> > > good idea in general.  If I could create multiple virtual interfaces
> > > (vifs) on top of a single phyiscal interface (e.g., one vif per
> > > neighbor) and subsequently set the interface cost per vif, then would
> > > that not comply with the standard and give me the functionality we
> > > want/need?
> > Even if you could create several interfaces it
> > would not do you much good. How would you separate
> > the traffic between the interfaces?
> > I beleive it to be very difficult.
> 
> Easy: each vif would have a separate IP address on which traffic could
> be demuxed.
If you want separate ip adresses in different this
should be possible to solve via alias interface.
On linux:
ifconfig eth0 1.1.1.1 netmask 255.255.255.0
ifconfig eth0:1 2.2.2.2 netmask 255.255.255.0
though if you wan't them all in the same subnet it
would be hard. This was what I assumed but I
suppose I'm wrong.

  Kristian
> 
> -Nick