[c-nsp] c6500 turn interface up whitout any physical device connected to it

[Peter Rathlev]

On Fri, 2011-07-15 at 12:01 +0200, Alexandre Durand wrote:
> Well it s not really a problem, I just don t want  to connect anything
> on this port but still get the port up so I can advertise the network
> over ospf and bgp. I could use loopback interfaces instead but I ll
> get /32 mask advertised over ospf ... and I want to advertise a
> network mask like  /24. Or an other solutionmay  be to resdtribute
> static null route with /24 prefix from this routeur ...

Using a floating (i.e. AD >> normal, e.g. 250) static Null0-route is
IMHO the best idea. Keep in mind that when the source of a BGP prefix
changes from e.g. a connected net to a static Null0-route the attributes
will change, and that might have an effect regarding e.g. route-flap
dampening. Supressing the more specifics with e.g. "aggragate-addresse"
might help here.

Otherwise a Loopback interface configured just like you would the
Ethernet interface should, like Tim mentioned, work out right.

-- 
Peter