Flat unicast routing method applicable to campus network
A campus network and routing technology, applied in the field of computer networks, can solve problems such as poor mobility and inflexible configuration of terminal IP addresses
Active Publication Date: 2017-05-31
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to propose a flat unicast routing method suitable for campus networks i
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[0061] figure 1 It is the topological structure diagram of the campus network described in the background art. Such as figure 1 Shown: The campus network is mainly composed of two types of equipment: switches and terminals. Each switch deploys the IS-IS protocol to calculate the forwarding table (each entry in the forwarding table includes the switch identifier and the interface number of the next hop), and the message transmission path is determined according to the result of searching the forwarding table. In a campus network, the IP address of the terminal must be in the network segment of the campus network. Once a new terminal is connected to the campus network, the administrator must reassign a new IP address to the terminal. During the period when the terminal obtains a new IP address, its previously established service connections are all interrupted. In order to continue to maintain the normal service, the terminal needs to re-establish the service connection.
[0062...
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The invention discloses a flat unicast routing method applicable to a campus network, which aims to solve the problems that a network layer routing method in a traditional campus network is not flexible in terminal IP address configuration, and the support mobility is bad and so on. The technical scheme is as follows: firstly, a flat unicast routing system applicable to the campus network is constructed, terminals, an ingress switch, an egress switch and intermediate switches are all equipped with corresponding flat unicast routing protocol software, a unique switch identifier is configured for each switch, a unique terminal identifier is configured for each terminal, and an LSA (Link State Advertisement) message in an IS-IS (Intermediate System-to-Intermediate System) protocol is extended; and the terminals, the ingress switch, the egress switch and the intermediate switches execute the corresponding flat unicast routing protocol in parallel to complete the forwarding of the message. By adopting the flat unicast routing method applicable to the campus network provided by the invention, the terminals do not need to regain new IP addresses after the terminals are connected to the campus network, and when the terminals move to different campus networks, the terminal service connection is not interrupted, so that the reliability of the terminal service is guaranteed.
Description
technical field [0001] The invention relates to a routing method in the field of computer networks, in particular to a flat unicast routing method suitable for park networks. Background technique [0002] A campus network is a typical packet-switching network. Multiple campus networks are connected to the backbone network to form an Internet network. Routing technology is the core technology supporting the campus network. Routing technology ensures the reachability of end-to-end communication in the network by calculating the packet transmission path. Although routing technology exists at all levels in the network model, the performance of routing technology at the network layer directly affects network transmission performance. In the campus network, the network layer routing protocol includes link state routing protocol and distance vector routing protocol. However, the characteristics of routing information propagation one by one and distributed routing calculation lim...
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Login to View More IPC IPC(8): H04L12/721H04L12/741H04L45/74
CPCH04L45/12H04L45/74
Inventor 王宝生邓文平高先明苏金树陈曙晖彭伟郦苏丹陶静王宏唐竹
Owner NAT UNIV OF DEFENSE TECH