tailieunhanh - sams teach yourself tcp ip in 24 hours phần 4

Như bạn sẽ nhớ lại từ phần trước, mặt nạ mạng con là một số nhị phân 32-bit. Bạn có thể chuyển đổi subnet mask nhị phân đến một địa chỉ chấm thập phân bằng cách sử dụng các kỹ thuật chuyển đổi địa chỉ được mô tả trong Giờ 4. Một mặt nạ mạng con thường dễ dàng hơn nhiều để chuyển đổi sang định dạng số thập phân rải rác hơn một địa chỉ IP. | PART III Networking with TCP IP HOUR 8 Routing 121 HOUR 9 Getting Connected 143 HOUR 10 Firewalls 175 HOUR 11 Name Resolution 185 HOUR 12 Automatic Configuration 215 HOUR 13 IPv6 The Next Generation 229 From the Library of Athicom Parinayakosol This page intentionally left blank From the Library of Athicom Parinayakosol HOUR 8 Routing What You ll Learn in This Hour IP forwarding Direct and indirect routing Routing protocols The infrastructure that supports global networks such as the Internet could not function without routers. TCP IP was designed to operate through routers and no discussion of TCP IP is complete without a discussion of what the routers are doing. As you learn in this hour a router participates in a complex process of communication with other routers on the network to determine the best path to each destination. In this hour you learn about routers routing tables and routing protocols. At the end of this hour you ll know how to Describe IP forwarding and how it works Distinguish between distance vector routing and link state routing Discuss the roles of core interior and exterior routers Describe the common interior routing protocols RIP and OSPF Routing in TCP IP In its most basic form a router is a device that filters traffic by logical address. A classic network router operates at the Internet layer OSI Network layer using IP addressing information in the Internet layer header. In OSI shorthand the Network layer is also known as Layer 3 and a router is sometimes called a Layer 3 device. In recent years From the Library of Athicom .