How is IGRP similar to RIP?

Answer 1

Interior Gateway Routing Protocol (IGRP) IGRP is a distance-vector interior gateway protocol (IGP). Distance-vector routing protocols call for each router to send all or a portion of its routing table in a routing-update message at regular intervals (every 90 seconds) to each of its neighboring routers. As routing information proliferates through the network, routers can calculate distances to all nodes within the internetwork. IGRP uses a combination (vector) of metrics. Internetwork delay, bandwidth, reliability, and load are all factored into the routing decision. Network administrators can set the weighting factors for each of these metrics. IGRP uses either the administrator-set or the default weightings to automatically calculate optimal routes.

Routing Information Protocol (RIP) The Routing Information Protocol (RIP) is a distance-vector protocol that uses hop count as its metric. RIP is widely used for routing traffic in the global internet and is an interior gateway protocol (IGP), which means that it performs routing within a single autonomous system. RIP only uses hop count to determine the best route to a remote network, RIP has a maximum hop count of 15, 16 is deemed unreachable. RIP works well in small internetworks, but is inefficient for large networks. RIP is susceptible to all the problems normally associated with distance vector routing protocols. It is slow to converge and forces routers to learn network information only from neighbors. RIP version 1 uses classful routing (all devices in the network must use the same subnet mask because RIP version 1 doesn't send updates with subnet information). RIP version 2 uses classless routing and does send subnet mask information with route updates. RIP networks need the same hop count to load balance multiple links.

Answer 2

it is suitable for routing data on large networks.

it uses a composite metric that allows flexible route selection.

it can select multiple nonequal paths to a distination