Thus spake Mike Andrews
On Tue, 16 Nov 1999, Jeff Mcadams wrote:
Just out of curiosity, what does a list ip networks, or show ip network <blah> show for the netmask on that network after picking up the new OSPF routes?
If you shut OSPF off and reboot, you get:
IP ROUTES
Yeah, but what about "list ip networks" or "show ip network <blah>" rather than "list ip routes"? ;) I'm curious whether the actual network definition changes or not. :)
What should probably happen is that it should probably put BOTH routes in the table, rather than trying to pick between the two... then when making routing decisions later, use the most specific.
No "probably" to it.
I can see cases where just throwing one of the two routes away would cause problems. (Suppose one of the routes goes down, for example.)
Or even just look at the concept of classless routing...packets in the more-specific route should be sent to the destination for the more specific...that doesn't mean that there won't be packets destined for the part of the less-specific route that isn't covered by the more-specific...those packets should go to the less-specific (most specific that it matches) next-hop. To not keep both routes and pick the most-specific for each packet is rather bogus routing behavior actually. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.