On Aug 10, 2009, at 6:24 PM, Joakim Tjernlund wrote:
There's nothing wrong with advertising it in multiple areas, though particular implementations may or may not let you do so. Putting itin only one area and advertising a summary into other areas would havethe same effect at forwarding time.But you may not be connected to the backbone in all cases.
True, though it would be an odd box that was configured to be in multiple areas, none of which were the backbone.
Lots of room for implementation choices here.Yes, do you know of any? I Would be really like to use some existing template.
There are policy languages on multiple vendors' routers that can do all sorts of stuff. Or one could imagine having a command that says "advertise the loopback address in all areas." Or you could imagine advertising the loopback address by default in any area that didn't have a numbered interface bound to it. Etc.
--Dave
Jocke--Dave On Aug 10, 2009, at 12:59 PM, Joakim Tjernlund wrote:I got routers which only have unnumbered PtoP interfaces and I wonderhow to advertise a host route as described in RFC 2328: [2]It is possible for all of a router's interfaces to be unnumberedpoint-to-point links. In this case, an IP address must be assignedto the router. This address will then be advertised in the router's router-LSA as a host route. The first that comes to mind is to just assign an IP address/32 to the loopback or dummy interface and start OSPF on that I/F. However, you can only assign one area to that I/F. How have other people solved this? Ideally there would be a command that lets me assign a IP address which will be advertised in all areas.