BGP Operation

1. Finite State Model
   1. Idle
   2. Connect
   3. Active
   4. Open Sent
   5. Open Confirm
   6. Established
2. Metrics
3. Timers
4. Advertisements
5. Messages
   1. Open
   2. Keepalive
   3. Notification
   4. Update
      1. Network Layer Reachability Information (NLRI)
      2. AS-Path Attributes
         1. WEIGHT
         2. LOCAL PREFERENCE
         3. AS_PATH
         4. ORIGIN
         5. NEXTHOP
         6. METRIC
         7. MULTI_EXIT_DISC
         8. COMMUNITY
         9. CLUSTER_ID
6. BGP Best Path Selection Algorithm
7. Route Flaps and Route Dampening
8. Cisco Nonstop Forwarding
   1. Routing Information Base
   2. Forwarding Informaton Base