Actually, OSPF neighbour states will become "Full" on point to point links. I don't have the time or playpen to double-check the state transitions at the moment, but a quick check shows "Full" across point to point frame relay sub-interfaces and also across leased lines.
JMcL "Kane, Christopher A." Sent by: [EMAIL PROTECTED] 15/01/2002 02:04 pm Please respond to "Kane, Christopher A." To: [EMAIL PROTECTED] cc: Subject: RE: Encapsulation Failed [7:31916] Yes, OSPF sends hellos on Serial interfaces. In point-to-point networks OSPF's hello is multicast. There is no DR/BDR so it's my understanding that it simply becomes a Master/Slave relationship. Mindful that in OSPF a Neighbor is not the same as an Adjacency. All routers become neighbors (assuming all aspects of the Hello protocol are agreed upon) They only become Adjacent with the respective DR and BDR of the network in the case of a network on a broadcast medium. I'm pretty sure you only see "2-way" as a neighbor state on point-to-point links rather than seeing "Full" as on a broadcast medium. I'd need someone else to chime in on point-to-multipoint as I haven't configured that lately. Chris -----Original Message----- From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]] Sent: Monday, January 14, 2002 8:40 PM To: [EMAIL PROTECTED] Subject: Re: Encapsulation Failed [7:31916] At 07:57 PM 1/14/02, s vermill wrote: >Priscilla, > >May I ask what led you to believe that bridging was involved as opposed to >just assuming that the source address was the Cisco router itself? Good question. The IBM 6611 does bridging for one thing. The other hint was that it was attempting to send an OSPF Hello on a serial interface. Does OSPF do that? How does it establish adjacency to a neighbor router on a WAN? On a point-to-point network, I figured it just knew who its neighbor was. On a non-broadcast, multiple-access network, such as Frame Relay, you normally configured the neighbor command. I've only seen the OSPF multicast Hellos on LANs, (but I can't afford a WAN Sniffer anymore! ;-) Gurus? Help? Thanks. Priscilla P.S. Anyone seeing this may be confused because you didn't include the original message. PLEASE, people, reply with the body of the message in the reply. We work in connectionless, stateless mode. How do you expect anyone to easily connect this to the discussion about a router failing to forward a packet on a PPP link to an IBM 6611. Hello????? >Just as an opportunity to learn something. > >Regards, > >Scott ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31954&t=31916 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]