As stated in the previous section, OSPF uses several types of Link State Advertisements. Each LSA begins with a standard 20-byte LSA header. This header contains the following fields:
- Link State Age
- Link State Type
- Link State ID
- Advertising Router
- Link State Sequence Number
- Link State Checksum
The 2-byte Link State Age field states the time (in seconds) since the LSA was originated. The maximum age of the LSA is 3600 seconds, which means that if the age . . .
The content below this message is for members only.