I have had many classes where students have asked me for a simple chart that I write on the whiteboard when covering the routing protocols.  I finally put it to paper and am providing it here.  I hope some of you find it useful.

Name Class Type Administrative Distance Metric Classful/less Algorithm
RIP v1 Distance Vector IGP 120 Hop Count Classful Bellman-Ford
RIP v2 Distance Vector IGP 120 Hop Count Classless Bellman-Ford
OSPF Link State IGP 110 Cost Classless Dikstra (SPF)
Integrated IS-IS Link State IGP 115 Cost Classless Dikstra (SPF)
EIGRP Hybrid (Advanced Distance Vector) IGP 90 (internal)
170 (external)		 Composite (BW + DLY) Classless DUAL
BGP Path Vector EGP 20 (external)
200 (internal)		 Path Attributes (Usually AS-Path) Classless

There is obviously more to it than what you see here but for the this should be pretty good.

You can download it from the link below if you prefer a PDF.

Routing_Protocol_Comparison

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