OSPF (OPEN SHORTEST PATH FIRST) AND EIGRP(ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL)

OSPF: Open Shortest Path First

Link-state routing

Very infrequent broadcast updates

Extremely granular metrics

EIGRP: Enhanced IGRP

Hybrid routing protocol

Uses distance vectors, however they are triggered by changes, not timers.

Faster convergence, multiprotocol support

Link-state

No-second hand info, and understands entire network

Uses LSP packets to build ‘personal’ copy of entire network structure to route from

LSP: link-state packets or “hello packets”

Chooses ‘best’ path based on: bandwidth, congestion, metrics, etc.

Update times can be set very lengthy as changes cause triggered udpates.