Ospf basics: Unterschied zwischen den Versionen
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!colspan="16" style="background:#FFFF99"| Length<br /> | !colspan="16" style="background:#FFFF99"| Length<br /> | ||
|- | |- | ||
| − | !colspan="32" style="background:#FFFF99"| Router ID<br /> | + | !colspan="32" style="background:#FFFF99"| Router ID<br /> |
|- | |- | ||
| − | !colspan="32" style="background:#FFFF99"| Area ID<br /> | + | !colspan="32" style="background:#FFFF99"| Area ID<br /> |
|- | |- | ||
| − | !colspan="16" style="background:#FFFF99"| Checksum<br /> | + | !colspan="16" style="background:#FFFF99"| Checksum<br /> |
| − | !colspan="8" style="background:#FFFF99"| Instance ID<br /> | + | !colspan="8" style="background:#FFFF99"| Instance ID<br /> |
| − | !colspan="8" style="background:#FFCC99"| Reserved<br /> | + | !colspan="8" style="background:#FFCC99"| Reserved<br /> |
|- | |- | ||
| − | !colspan="32" style="background:#00EEEE"| Data<br /> | + | !colspan="32" style="background:#00EEEE"| Data<br /> |
|} | |} | ||
* Die Version 3 des OSPF ist für [[IPv6]] vorgesehen und in RFC 5340 definiert. | * Die Version 3 des OSPF ist für [[IPv6]] vorgesehen und in RFC 5340 definiert. | ||
| − | * Die ''Instance ID'' | + | * Die ''Instance ID'' 8 Bit. |
| − | * ''Reserved'' | + | * ''Reserved'' 8 Bit |
Version vom 14. Dezember 2017, 20:10 Uhr
Overview
- OSPF is an interior gateway protocol
Structure
- encapsulates its data directly in IP
- protocol number 89.
- multicast addresses 224.0.0.5
- variety authentication methods
Router relationships
- router identifies with Hello packet
- link state protocol
- neighbor relationships
Adjacency state machine
- down
- attempt
- init
- 2-way
- exstart
- exchange
- loading
- full
Protocol messages
- Hello
- Database Description
- Link State Request
- Link State Update
- Link State Acknowledgment
OSPF Version 3
| OSPF Header Version 3 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Version (Version) |
Type (Typ) |
Length | |||||||||||||||||||||||||||||
| Router ID | |||||||||||||||||||||||||||||||
| Area ID | |||||||||||||||||||||||||||||||
| Checksum |
Instance ID |
Reserved | |||||||||||||||||||||||||||||
| Data | |||||||||||||||||||||||||||||||
- Die Version 3 des OSPF ist für IPv6 vorgesehen und in RFC 5340 definiert.
- Die Instance ID 8 Bit.
- Reserved 8 Bit