6.6 Routing Information Protocol (RIP)

• RIP version 1 uses only classful routing - all devices in the network must use the same subnet mask
• RIP version 2 uses classless/prefix routing - send subnet mask information with route updates
• RIP uses four different kinds of timers - Route update timer (30s), Route invalid timer (180s), Holddown timer (180s), Route flush timer (240s)
• RIP v1 vs. RIP v2:

• RIPv2 is classless and works in VLSM and dis-contiguous networks