RIP v1 RIP v2 IGRP EIGRP OSPF IS-IS BGP
Interior/Exterior? Interior Interior Interior Interior Interior Interior Exterior
Type Distance Vector Distance Vector Distance Vector Hybrid Link-state Link-state Path Vector
Default Metric Hopcount Hopcount Bandwidth/Delay Bandwidth/Delay Cost Cost Multiple Attributes
90 (internal) 20 (external)
170 (external) 200 (internal)
EBGP Neighbors: 1 (default)
IBGP Neighbors: None
Convergence Slow Slow Slow Very Fast Fast Fast Average
Only when changes occur;
(LSA table is refreshed every 30
minutes, however)
Updates Full table Full table Full table Only Changes Only Changes Only changes Only changes
Classless No Yes No Yes Yes Yes Yes
Supports VLSM No Yes No Yes Yes Yes Yes
Algorithm Bellman-Ford Bellman-Ford Bellman-Ford DUAL Dijkstra Dijkstra Best Path Algorithm
224.0.0.5 (All SPF Routers)
224.0.0.6 (DR’s and BDR’s)
Protocol and Port UDP port 520 IP Protocol 9 IP Protocol 88 IP Protocol 89 TCP port 179
Routing Protocol Comparison
Routing Protocol Comparison v1.01 – Aaron Balchunas
Only when change occurs Only when changes occur Only when changes occur
110 115
Hopcount Limit 15 15
Unicast
Update timers 30 seconds 30 seconds 90 seconds
Update Address Broadcast 224.0.0.9 224.0.0.10
* * *
All original material copyright © 2007 by Aaron Balchunas (aaron@routeralley.com),
unless otherwise noted. All other material copyright © of their respective owners.
This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the
above copyright. Updated material may be found at http://www.routeralley.com.
Administrative Distance 120 120 100
255 (100 default) 224 (100 default) None None
224.0.0.10