This question is more protocol related than perhaps Cisco (vendor) specific.
Someone posted a question to the group today pertaining to OSPF and EIGRP. One of the poster's questions were about OSPF and multi-vendor interoperability. I've worked with OSPF on different routers and have not run into any problems. But it got me thinking more about the Hello protocol. It's within the Hello protocol that there are certain criteria that must be met. ACCORDING TO CISCO they are: Hello/Dead Interval, Area ID, Stub Flag and Authentication [method and password]. So, I wanted to see what RFC 2328 had to say about it. I also checked John T. Moy's book, Anatomy of an Internet Routing Protocol. In both of those sources I find that the following must match: Network mask, HelloInterval and RouterDeadInterval and the E-bit of the Options Field. The exception being the Network mask (depending on the Network Type in use). RFC states: HelloInterval RouterDeadInterval Network Mask E-bit of Options Field (Area capable of processing AS-external-LSAs) Cisco implementation: Hello/Dead Interval Area ID Stub Flag Authentication Method/password I realize vendors have the choice of how closely they follow an RFC. I'm just trying to make sure I understand the protocol for what it is and for how Cisco deploys it. Can someone experienced with this protocol check my understanding? -chris Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=41647&t=41647 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]