Enhanced IGRP (2)
Technologies used in E-IGRP:
- neighbor discovery / recovery - dynamically learns about other routers in directly attached networks( periodically exchanged small hello packets)
- reliable transport protocol (RTP) - responsible for guaranteed delivery of E_IGRP packets to all neighbors
- protocol dependent modules - used for network layer protocol-specific requirements
- DUAL finite-state machine - tracking all routers and selecting efficient, loop-free paths
Types of packets: hello and acknowledgment, update, query, replay