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]

Reply via email to