blank.gif (43 bytes)

Church Of The
Swimming Elephant

8. Protocol Packet Processing Connected: An Internet Encyclopedia
8. Protocol Packet Processing

Up: Connected: An Internet Encyclopedia
Up: Requests For Comments
Up: RFC 1583
Prev: 7.5. The graph of adjacencies
Next: 8.1. Sending protocol packets

8. Protocol Packet Processing

8. Protocol Packet Processing This section discusses the general processing of OSPF routing protocol packets. It is very important that the router topological databases remain synchronized. For this reason, routing protocol packets should get preferential treatment over ordinary data packets, both in sending and receiving.

          +---+            +---+
          |RT1|------------|RT2|            o---------------o
          +---+    N1      +---+           RT1             RT2

            +---+   +---+   +---+                /|\        |
            |RT7|   |RT3|   |RT4|               / | \       |
            +---+   +---+   +---+              /  |  \      |
              |       |       |               /   |   \     |
         +-----------------------+        RT5o RT6o    oRT4 |
                  |       |     N2            *   *   *     |
                +---+   +---+                  *  *  *      |
                |RT5|   |RT6|                   * * *       |
                +---+   +---+                    ***        |

                  Figure 10: The graph of adjacencies

Routing protocol packets are sent along adjacencies only (with the exception of Hello packets, which are used to discover the adjacencies). This means that all routing protocol packets travel a single IP hop, except those sent over virtual links.

All routing protocol packets begin with a standard header. The sections below give the details on how to fill in and verify this standard header. Then, for each packet type, the section is listed that gives more details on that particular packet type's processing.

Next: 8.1. Sending protocol packets

Connected: An Internet Encyclopedia
8. Protocol Packet Processing


Protect yourself from cyberstalkers, identity thieves, and those who would snoop on you.
Stop spam from invading your inbox without losing the mail you want. We give you more control over your e-mail than any other service.
Block popups, ads, and malicious scripts while you surf the net through our anonymous proxies.
Participate in Usenet, host your web files, easily send anonymous messages, and more, much more.
All private, all encrypted, all secure, all in an easy to use service, and all for only $5.95 a month!

Service Details

Have you gone to church today?
All pages ©1999, 2000, 2001, 2002, 2003 Church of the Swimming Elephant unless otherwise stated
Church of the Swimming Elephant©1999, 2000, 2001, 2002, 2003 is a wholly owned subsidiary of Packetderm, LLC.

Packetderm, LLC
210 Park Ave #308
Worcester, MA 01609