I believe someone might have mentioned this already but since I'm studying it right now I thought I'd ask again... It would be greatly appreciated if someone can shed some light on this.
For OSPF Point-to-MulitPoint Network type, does the OSPF packets use multicast or unicast? My understanding is that Point-to-Multipoint Network type is a special config of NBMA network in which the network are treated as a collection of Point-to-Point links. And since Point-to-Point links always use multicast (to ALLSPFRouter address 224.0.0.5), I thought Multicast will hence use Multicast too... however... the TCP / IP Vol1 by Jeff Doyle says Point-to-Point links' Updates as well as Hello packets use unicast Please help... Best Regards, Hunt Lee Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36352&t=36352 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

