The book did not make it clear but both are right. 1. If your use "point-to-multipoint" command on interface, the routing packets will be send using multicast packet. 2. If you use "point-to-multipoint non-broadcast" command on interface, you need "neighbor" under "router ospf" and the routing packets will be sent using unicast.
You can turn on debug mode to watch ospf packets, like hello packets, which is easy to observe. CCIE Study Professional Checklist http://www.geocities.com/berdde/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jim Bond Sent: Sunday, October 21, 2001 1:52 PM To: [EMAIL PROTECTED] Subject: ospf point-to-multipoint [7:23655] Hello, On Jeff Doyle's TCP/IP volume I, P417 it says point-to-multipoint is multicast; P433 it says it's unicast. Which one is correct? Thanks in advance. Jim __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23666&t=23655 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

