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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 CCNA this should be pretty good.
You can download it from the link below if you prefer a PDF.
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