IBGP Meshing

• Under normal circumstances, every interior router runs an IBGP session with every other interior router.

• Yes, that's right, every time you add a router you have to go to every other router and add a new “neighbor” line to its BGP setup.

• There are features I won't go into here (“peer groups”) which make that fairly painless.

• Write some perl to autogenerate your configs.