How BGP Works

How it works, Incremental updates, Path vector protocols, BGP and the seven layer model, The BGP header, BGP message types, Open, Notification, Keepalives, Updates, NLRI, Unreachable routes, Path attributes, Route dampening.

Route Reflectors and Confederations

Full mesh IBGP, Route reflectors, Route reflector design, confederations, migration issues.

BGP Path Selection

Policy based routing, BGP attributes, Well known mandatory, well known discretionary, optional transitive/nontransitive, AS path, Route selection order, weight, Local preference, Multi Exit Discriminator.

BGPv4 Aggregation

CIDR, benefits, techniques, shortcuts, BGP aggregation attributes, summarisation options.

Policies

Policy control and filtering, filter-lists, distribute-lists, prefix-lists, route maps, match commands, set commands, applying route maps.

Policies on the Internet
Communities, Peer groups, RIPE objects, RIPE, RPSL.

BGP Architectures