netwyman

Routing is a process in which the layer 3 devices (either router or layer 3 switch) finds the optimal path to deliver a packet from one network to another. Dynamic routing protocols uses metric, cost and hop count to identify the best path from the path available for destination network. Below are the types of Routing Protocol: - Distance Vector Routing Protocol RIP IGRP - Link State Routing Protocol OSPF IS-IS - Advanced Distance vector routing protocol EIGRP Distance Vector Routing Protocol: Distance vector protocols usually send the complete routing table to each neighbor (a neighbor is directly connected router that runs the same routing protocol). They employ some version of Bellman-Ford algorithm to calculate the best routes. Compared with link state routing protocols. Distance vector protocols are easier to configure and require little management, but are susceptible to routing loops and converge slower than the link s...

Following are the differences between OSPFv3 and OSPFv2- 1. Removal of addressing semantics: IPv6 addresses are not present in OSPF packets, except in Link-State Update (LSU) packets. Router and Network LSAs do not contain network addresses, but only contains topology information. OSPF Router ID, Area ID and Link-State IDs remain at 32-bits size- they cannot be assigned IPv6 addresses. Neighboring routers are identified by Router IDs only. OSPF v2 OSPF v3 2. Addition of Flooding scope: There are three seperate scopes for flooding LSAs-           Link-local scope -  LSA is flooded only on local link and no further. New Link-LSA uses link-local scope.      Area scope -  LSA is flooded in a single OSPF area. Router-LSAs, Network-LSA, Inter-area Prefix-LSAs, Inter-area Router-LSAs and Intra-area Prefix-LSAs use Area scope.      AS scope -  LSA is flooded throughout the routing domain. AS-external L...