1. Hopefully someone else will tell you the answer to this one as I have no idea what the benefit is.
2. The cost dosen't have to be the same. The router will report it's own calculated cost to the neighbor based on it's cost because it's directly connected to it. So if you have: RA------RB (s0)------(s0) RC (e0)___| If router C considers it's S0 link to be a cost of 20000 and Router B considers the same link to be 1000, then RA will receive link to be based on RB's calculation. But router A will receive Router C's e0 link as based on the cost of Rc's calculation of the link. 3. According to RFC 2328, it's the router ID which is used in the master/slave determination. I tested it and it is the Router ID. 4. I believe you are correct in your explanation. 5. I believe they both mean Database Descriptor Packet. -- RFC 1149 Compliant. ""bergenpeak"" wrote in message news:[EMAIL PROTECTED].; > 1) A loopback address is normally advertised by OSPF as a host route. > The command "ip ospf network point-to-point" enables one to specify > that the interface should be advertised as a subnet route. What are > the benefits for doing this? > > 2) Must a link cost be the same on for all routers that share the > link? Is there a protocol reason for this? Some other reason? > > 3) In the Exstart phase, how is the master selected? Chappel's > book says RID while Doyle's say highest interface IP address. Which > is it? > > 4) I'm somewhat unclear on the Exchange and the Loading states. When > a router goes into Exchange state, does it send all DDPs it knows > about before processing any DDPs received from other adjancent > neighbors? > Thus, a router goes into Exchange state, sends all DDPs it knows about, > then goes into Loading state, where it issues LSRs for LSAs it wants > more > details on? Is this the process? > > 5) Is there a difference between DBD and DDP packets? > > Thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37156&t=37142 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
