RE: Cisco - ip verify unicast reverse-path

[Paul Ferguson <ferguson () cisco com>]

At 09:18 PM 02/12/2000 -0500, jlixfeld () idirect com wrote:

> Correct me if I'm wrong, but it has the potential to cause more damage than
> anything else if you network routes asynchronously.  I turned it on a while
> ago and noticed my in and outbound traffic dropped by about 60%.  I'm sure
> that the 60% drop in traffic had to do with traffic coming into the network
> on one interface and being local pref'd out a different interface.
>
> Because of the asynchronous routing, it's useless in my environment, unless
> there is a knob that doesn't cause it to break under these circumstances.
>
> If not, would this feature not be best suited for ISPs who are not in a BGP
> relationship with their upstreams?

Like everything else, it depends.

There's always RFC2267.

- paul