Building Adjacencies
Because adjacencies are vital to the reliable flooding of these link-state advertisements, you should examine how an adjacency is built and learn from some special cases. Figure A-1 begins with an illustration of two routers connected to the same network.
Figure A-1. Building Adjacencies
When Routers A and B are first attached to the serial link between them, they will begin sending hello packets on this network. Next, the routers begin receiving each other's hello packets, as shown in Figure A-2.
When Routers A and B receive each other's hellos, they will place their new neighbors in init-state.
Figure A-2. Router Exchange ...
Get Advanced IP Network Design (CCIE Professional Development) now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
