At 02:51 PM 2/25/97 -0500, you wrote:

At 10:50 AM 2/25/97 -0500, Paul Ferguson wrote:

...

Well, without naming names, the prefix-length based filtering is done on non-customer routes. A byproduct of this is it grudgingly encourages aggregation.

Well, yes, but now that multiple providers are doing this the fact that they are non-customer filters affects anyone who is not a customer of BOTH providers, thus further encouraging people to aggregate. I would not mind seeing these filters become more prevalent, making it unreasonable for people to become customers of everyone who filters to get around the filters. Renumbering is NOT that hard folks, and it DOES help.

We service hundreds of dedicated customers and some customers don't mind renumbering (if they are small) but most of our larger customers who have more than 100-200 hosts on their network have expressed GREAT opposition to any such notion of renumbering. Its not that they don't want to do it because they are lazy, on the contrary, many companies cannot the afford the downtime or cost asociated with renumbering their LAN/WAN. I agree that renumbering is an important aspect of address grooming for better agregation but there are some real $$$ costs to some end-user networks to do so. Also, how many times can you ask a customer to renumber before they bail and go elsewhere? -- Christopher K. Phillips Chief Technical Officer Rocky Mountain Internet, Inc ckp@rmi.net 303.672.0799 http://www.rmi.net