I made out a diagram showing the different types of areas and listed which
LSA's would be allowed into the area. The NSSA was the wierdest one to
remember.
>>>Brian
>From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>Reply-To: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>To: Robert Nickson <[EMAIL PROTECTED]>,
>[EMAIL PROTECTED]
>Subject: RE: ccnp routing frames
>Date: Thu, 15 Feb 2001 11:03:50 -0800
>
>At 10:19 AM 2/15/01, Robert Nickson wrote:
> >sorry for OSPF
>
>You should have left out that extra piece of information that the packets
>you mention are for OSPF, and anyone who didn't know that should go back to
>studying. &;-) This is an odd way of saying that you would have to know at
>least that much for the routing exam. You don't have to know the exact
>frame formats. It's must more important to understand the general
>principles of how OSPF routers become adjacent and synchronize their
>databases, and to be able to recognize the commonality in the frame
>formats.
>
>With regards to frame formats, I think you should know the following:
>
>OSPF runs directly above IP, using protocol type 89. (It does not use TCP
>or UDP.)
>
>OSPF packets have an IP TTL of 1.
>
>OSPF packets are sent to a reserved multicast address, either AllSPFRouters
>(224.0.0.5) or AllDRouters (224.0.0.6).
>
>Each OSPF packet type begins with an OSPF packet header.
>
>The Hello packet is used to find neighbors and detect problems.
>
>All the other packet types carry link-state advertisement information of
>some sort.
>
>The best book for describing what you should "really care about" when
>learning OSPF is Howard Berkowitz's "Designing Routing and Switching
>Architectures." I think he does a better job than Doyle in making sure the
>reader focuses on what really matters. And, as we know, he dispels urban
>myths with style and aplomb.
>
>Priscilla
>
>
>
> >-----Original Message-----
> >From: Robert Nickson
> >Sent: Thursday, February 15, 2001 10:10 AM
> >To: [EMAIL PROTECTED]
> >Subject: ccnp routing frames
> >
> >
> >On the CCNP routing exam is there any questions on (i.e do i have to
> >memorise)
> >frame for frame the format of hello packets,DD packets,LSA packet
> >frames...etc
> >like ..version,type,packet length,route ID,Area ID,Checksum,Au
> >type,Authentication etc etc
> >or is there certain fields i should learn
> >
> >Any help would be useful
>
>
>________________________
>
>Priscilla Oppenheimer
>http://www.priscilla.com
>
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