|
Routing Protocol
|
Metric
|
|
Routing Information Protocol (RIP)
|
- The metric is “hop count”
- Each router along a path adds a hop to the hop count
- A maximum of 15 hops allowed
|
|
Open Shortest Path First (OSPF)
|
- The metric is “cost” which is the based on the cumulative bandwidth from source to destination
- Faster links are assigned lower costs compared to slower (higher cost) links
|
|
Enhanced Interior Gateway Routing Protocol (EIGRP)
|
- It calculates a metric based on the slowest bandwidth and delay values
- It could also include load and reliability into the metric calculation
|