RIP

Intro

  • Routing Information Protocol

  • Distance vector IGP (used 'routing by rumor' logic to learn/share routes).

  • Used hop count as its metric. One router = one hop (bandwidth is irrelevant!).

  • The maximum hop count is 15 (anything more than that is considered unreachable).

  • Has three versions:

    • RIPv1 and RIPv2, used for IPv4.

    • RIPng (RIP Next Generation), used for IPv6.

  • Uses two message types:

    • Request - To ask RIP-enabled neighbor routers to send their routing table.

    • Response - To send the local router's routing table to neighboring routes.

  • By default, RIP-enabled routers will share their routing table every 30 seconds.

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