BGP

Posted Leave a commentPosted in BGP

Configuring Basic BGP  Comparison with Other Scalable Routing Protocols Protocol Interior or Exterior Type Hierarchy Required? Metric OSPF Interior Link-state Yes Cost IS-IS Interior Link-state Yes Metric EIGRP Interior Advanced distance-vector No Composite BGP Exterior Path-Vector No Path-vector(attributes) When to Use BGP BGP use in an AS is most appropriate when the effects of BGP […]

EIGRP

Posted Leave a commentPosted in EIGRP

EIGRP (Enhanced Interior Gateway Protocol) Hybrid Protocol / Classless / Hello Packet Updates / AD of 90 Benefits Rapid Convergence – Uses Diffusing Update Algorithm (DUAL) to achieve rapid convergence.  If no appropriate backup route exists in the local routing table, EIGRP queries its neighbors to discover an alternative route Reduced bandwidth usage – EIGRP […]

OSPF

Posted Leave a commentPosted in OSPF, Protocols

OSPF (Open Shortest Path First) Link-State Protocol / Classless / Triggered Updates/ AD of 110 Characteristics Link-State Protocol Characteristics Responds quickly to network changes Send triggered updates when a network change occurs Send periodic updates, known as link-state refresh, at long time intervals, such as every 30 minutes. Uses a 2 layer are hierarchy Transit […]