There are different OSPF Packet Types which are used for different purposes. OSPF has five types of Packets. OSPF uses its own protocol and doesn’t use a transport protocol like TCP or UDP. It uses IP Protocol 89. Let us have a detailed look into each type of Packet now.
Below is a general view of OSPF Packet. When changing from one type to another in above five categories, just the TYPE & DATA fields are changed.
This is how it will look when we deep dive into the packet itself.
Below are the five types of Packets in detail & description of each field in them:
Type1. Hello packet
Type2. DBD (Database Descriptor)
Type3. LSR (Link State Request)
Type4. LSU (Link State Update)
Type5. LSAck (Link State Acknowledgment)
Below is the detailed Explanation on each type of packet:
OSPF Type5 Message / LSAck Packet (Link State Acknowledgment)
Good work!!!
Nice one
Thanks for app
I am looking more into the OSPF Hello type of packet. Plz if you can explain it.
Please have a look at: https://aurumme.com/atech/ospf-type1-message-hello-packet/
Hello packet, also called Type1 OSPF Packet, is a special packet/message that is sent out periodically from a router to establish and confirm network adjacency relationships. These packets are sent periodically on all interfaces in order to establish and maintain neighbor relationships.
Nice post but it would have been great if you could explain each type of packet a little bit …
Yes, they have been explained on next posts.
Please follow:
https://aurumme.com/atech/ospf-type1-message-hello-packet/
https://aurumme.com/atech/ospf-type2-message-dbd-packet-database-descriptor/
https://aurumme.com/atech/ospf-type3-message-lsr-packet-link-state-request/
https://aurumme.com/atech/ospf-type4-message-lsu-packet-link-state-update/
https://aurumme.com/atech/ospf-type5-message-lsack-packet-link-state-acknowledgment/
Nice & concise post
Thanks for app!!
I was browsing through your OSPF articles. Nice set of articles!
Thanks