Dynamic Routing Protocols Comparison Key Elements Rip - Ver1 Rip - Ver2 IGRP EIGRP OSPF

Abbreviation Routing Information Protocol

Routing Information Protocol

Interior Gateway Routing Protocol

Enhanced Interior Gateway Routing Protocol

Open Shortest Path First

Algorithm Bellman Ford algorithm

Bellman Ford algorithm Bellman Ford algorithm

DUAL algorithm Dijkstra algorithm

Protocol Standard

Open Standard Protocol

Open Standard Protocol

Cisco Proprietary Protocol

Cisco Proprietary Protocol

Open Standard Protocol

Routing Protocol

Classful Routing Protocol

Classless Routing Protocol

Classful routing protocol

Classless routing protocol

Classless Routing Protocol

Updates Through

Broadcasted via 255.255.255.255

Broadcasted via 255.255.255.255

Broadcasted via 255.255.255.255

Multicast via 224.0.0.10

Multicast via 224.0.0.5

Administrative distance

120 120 100 90 110

Metric Hop Count Hop Count

Metric (24 bit) : Composite Metric (BW+Delay+Load+MTU+Reliability)

Metric (32 bit) : Composite Metric (BW+Delay+Load+MTU+Reliability)

Metric = Cost =108/Bandwidth in bps (CISCO)

Hop Count Max 15, Routers - 16 Max 15, Routers - 16 Max Hop count is 255 (100 is default)

Max Hop count is 255 (100 by default)

Dynamic Routing Protocols Comparison

Timers Key Elements Rip - Ver1 Rip - Ver2 IGRP EIGRP OSPF

Update Timer 30 Seconds 30 Seconds 90 Seconds 5 Seconds 10 Seconds

Invalid Timer 180 Seconds 180 Seconds 270 Seconds

Flush Down Timer 240 Seconds 240 Seconds 630 Seconds

Holddown Timer 180 Seconds 180 Seconds 280 Seconds

Load Balancing 4 Equal paths 4 Equal Paths 6 equal or unequal paths

Supports IP, IPX and Apple Talk protocols

Hierarchical design with Multiple Areas

Usuage Small Organisations Small Organisations large organizations

large organizations Very Large Organisations

Others Doesn’t Support VlSM & Multicast

Supports VLSM & Multicast

No More in use Convergence rate is fast

Convergence rate is fast