CCNP Self-Study CCNP Practical Studies: Switching

Chapter 5. Inter-VLAN Routing

Networks are constantly evolving, and in the past few years a number of trends have become apparent. First of all, the Internet Protocol (IP) has become the Layer 3 protocol of choice for modern networks, with other Layer 3 protocols such as Internetwork Packet Exchange (IPX) and AppleTalk rapidly being phased out. IP interconnects the Internet. The increasing reliance of organizations on the Internet has promoted IP as the Layer 3 protocol of choice. Secondly, local-area networks (LANs) have seen tremendous advances in terms of performance, bandwidth, and lowering cost. The LAN provides the medium over which users and devices connect to the internal IP network and the Internet hence is an important component of networking. ...