Connected: An Internet Encyclopedia
13.1. Determining which link state is newer

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13.1. Determining which link state is newer

13.1. Determining which link state is newer

When a router encounters two instances of a link state advertisement, it must determine which is more recent. This occurred above when comparing a received advertisement to its database copy. This comparison must also be done during the Database Exchange procedure which occurs during adjacency bring-up.

A link state advertisement is identified by its LS type, Link State ID and Advertising Router. For two instances of the same advertisement, the LS sequence number, LS age, and LS checksum fields are used to determine which instance is more recent:


Next: 13.2. Installing link state advertisements in the database

Connected: An Internet Encyclopedia
13.1. Determining which link state is newer