CCNA / lesson 2 - Differences from the other routing protocols

Differences from the other distance vector routing protocols like RIP

• ·         Reliable transport protocol (RTP) – RTP has both reliable and unreliable protocol formatting. Network layer independent by not using IP and using RTP. EIGRP can service IP, IPX and Apple Talk. RTP is the protocol that takes to other routers.
• ·        Bounded and partial updates – information sent only to routers that need it. ‘Triggered’ not periodic updates. RIP does send all the information in every 30 seconds. Partial means only the information needed not the whole routing table.
• ·         Diffusing update algorithm (DUAL) – guarantee loop free routes, also will install back up routes. No hold down timers because of guarantee loop free routes.
• ·         Establishing adjacencies – using hello packets (RTP) EIGRP establishes active neighbor relationship.
• ·         Neighbor and Topology table – in addition to the routing table EIGRP maintains two other tables of information the neighbor table which has the adjacencies and topology table which has all routers learned in the network, lesser routes and backup routes not just the best routes.