[c-nsp] OSPF, load balancing

[Rodney Dunn]

I checked. No way to do it.

You will have to break the subnets up and let them prefer
one path over the other and have failover capability.

I don't think you can do it with OSPF.

I think EIGRP will allow you to set the metric based on an ACL.

Or BGP could probably be made to work.

Rodney

On Wed, Mar 07, 2007 at 03:24:15PM +0100, Paolo Losi wrote:
> Rodney Dunn wrote:
> > There are all kinds of hacks we could probably come up with and
> > some are uglier than others.
> > 
> > It all depends on what your tolerance is. :)
> 
> Well, we are already using a hack!
> We were looking for a better one :-)
> 
> > You coul do NAT on the outside interface and then only route traffic
> > back to that ip address over the upper path for example.
> > 
> > Similar to what is done for dual ISP connections. The shortest IGP
> > path back to the address you NAT to would force it to be symmetrical.
> 
> That is clear. using NAT is not feasible. There is flowing traffic
> of customers with static ip already assigned.
> 
> > No easy way wit OSPF in an equal path scenario to direct the traffic
> > one way vs. the other.
> > 
> > Let me ask the OER folks. I thought they were working on something
> > at one point that would actually fix this.
> 
> 
> Thanks!
> Paolo