link state routing protocol tutorial

... link- state updates to all other routers Link- State Routing Protocols © 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—5-6 Link- State Routing Protocol Algorithms © 2002, Cisco Systems, ... v2.0—5-11 Summary • Link- state routing uses LSAs, a topological database, the SPF algorithm, the resulting SPF tree, and a routing table of paths and ports to each network. • Link- state routing algorithms ... a network. • Link- state routing may flood the network with LSAs during initial topology discovery and can be both memory- and processor-intensive. • Balanced hybrid routing protocols combine...

Ngày tải lên: 17/02/2014, 08:20

... 09:26:26:%STANDBY-6-STATECHANGE: Standby: 0: FastEthernet0/1 state Active-> Init Reconnect West router: 09:26:57: %STANDBY-6-STATECHANGE: Standby: 0: FastEthernet0/0 state Listen-> ... you can watch the state changes as it is disconnected and reconnected to the network. Disconnect West router: 09:26:26:%STANDBY-6-STATECHANGE: Standby: 0: FastEthernet0/0 state Active-> ... they are both connected to the same network. A routing protocol is not needed. Each router has knowledge of all networks in the network. IP Routing will need to be enabled on all routers. ...

Ngày tải lên: 11/12/2013, 14:15

... vector protocol, link state protocol không phi giải quyết vấn đề chống loop và thời gian hội tụ rất lớn bởi vì không giống như routing- by-rumor approach của distance vector các router link state ... Gateway Routing protocol (EIGRP) là một sự nâng cấp của IGRP. Bên cạnh những tính chất vốn có IGRP là một distance-vector protocol, EIGRP còn mang một số tính chất của link state protocol. Tất ... Routing Protocol( EIGRP) Tác giả: Trần Văn Thành Enhanced Interior Gateway Routing Protocol( EIGRP) Lần đầu tiên được đưa vào sử dụng trong phiên bn ISO 9.21, Enhanced Interior Gateway Routing...

Ngày tải lên: 12/12/2013, 17:15

... an easy protocol to use. All that is required is to enable RIP and configure a network statement for the router interfaces that will be running RIP. RIP version 1 is a classful routing protocol, ... router an Intermediate System. Thus, the protocol defines communication from an Intermediate System to another Intermediate System. IS-IS is a link- state protocol and, like OSPF, divides the network ... OSPF, mostly because there are fewer changes you can make to the protocol s operation. Network Topology IS-IS is a link- state protocol and thus divides the network into a two-level hierarchy...

Ngày tải lên: 17/01/2014, 06:20

... Gateway Routing Protocol (EIGRP) ● AS number of the destination ● Configurable administrator tag ● ID of the external protocol ● Metric from the external protocol ● Bit flags for default routing Route ... to make routing decisions, the results of which are stored in the IP routing table. IP-Enhanced IGRP is responsible for redistributing routes learned by other IP routing protocols. Routing Concepts Enhanced ... learned from the Routing Table Maintenance Protocol (RTMP). The IP implementation redistributes routes learned from OSPF, Routing Information Protocol (RIP), IS-IS, Exterior Gateway Protocol (EGP),...

Ngày tải lên: 18/01/2014, 05:20

... Gateway Routing Protocol (EIGRP) As internetworks grew in scale and diversity in the early 1990s, new routing protocols were needed. Cisco developed Enhanced Interior Gateway Routing Protocol ... of link- state protocols. Specifically, EIGRP is “enhanced” by using four routing technologies: • Neighbor discovery/recovery • Reliable Transport Protocol (RTP) • DUAL finite -state ... Gateway Routing Protocol (EIGRP) Technical Overview of EIGRP EIGRP offers many advantages over other routing protocols, including the following: • Support for VLSM —EIGRP is a classless routing...

Ngày tải lên: 24/01/2014, 19:20

... this interface interface 32 OSPF Network Types 50 show ip protocols show ip protocols Router# • Verifies the configured IP routing protocol processes, parameters and statistics Verifying OSPF ... 30.0.0.1 30.0.0.2 40.0.0.1 10.0.0.2 40.0.0.2 A B 1 Distance Vector Link State Hybrid Distance Vector vs. Link State Route table Topology Incremental Update Periodic UpdateRouting by rumor A B C D X E 23 OSPF Design  Each ... convergence  Based on detailed knowledge of every link in the area and the OSPF "cost" of each  builds an OSPF tree OSPF tree with itself at the route 8 Link State  There are two types of Packets  Hello  LSA’s 44 OSPF...

Ngày tải lên: 06/03/2014, 07:20

... demand. Hybrid protocols combine properties of both proactive and reactive protocols. Among those protocols, it is known that gradient-based routing protocols which belong to the proactive protocols ... directly determined by the routing protocol. Particularly, in large- scale WSNs, communication protocols should scale with the number of sensor nodes [4]. Routing protocols pro- posed in the ... gradient-based routing protocols In gradient-based routing protocols, no routes are set up prior to sending data. Nodes are assigned only gradients, which are equal to the minimum cumulative link (or node)...

Ngày tải lên: 21/06/2014, 00:20

... Considerations for Routing. Ideally, a link quality esti- mator for a routing protocol should be accurate, agile, and stable, and should add minimum overhead to the routing protocol. Below, we ... trafficconfiguration 0 10 20 30 40 50 60 70 80 90 100 Link delivery ratio (%) Average LQI -link 1 Average LQI -link 2 LDR -link 1 LDR -link 2 Figure 21: Influence of background trafficonLQIandLDRfortwo different links in scenario A. ... trafficconfiguration 0 10 20 30 40 50 60 70 80 90 100 Link delivery ratio (%) Average LQI -link 1 Average LQI -link 2 LDR -link 1 LDR -link 2 Figure 22: Influence of background trafficonLQIandLDRfortwo different links in scenario B....

Ngày tải lên: 21/06/2014, 11:20

... efficiency of the routing protocols. The traditional flooding routing protocols have the advantages that they normally have high success rate in finding the path to destination, however, flooding protocols ... to update their routing tables with the new path corresponding to the link failure. Since RAURs inform the upstream nodes to update the routing table related to the failure link to providecorrectroutepathinthefuture,weconsiderithaving the ... LEACH, all the other protocols support multihop routing. Depending on how many copies of one data packet are forwarded to the destination simultaneously, these multihop routing protocols can be divided...

Ngày tải lên: 21/06/2014, 17:20

... Energy-Aware Routing Protocol 637 1.3. Link availability Link availability addresses the problem of prediction of the status of a link between two nodes after time t based ... energy-aware rout- ing protocol (EARP) is presented and its energy efficiency is compared with that of the ad hoc on-demand distance- vector (AODV) routing protocol. 2. ENERGY-AWARE ROUTING PROTOCOL In energy-efficient ... the energy consumption in vari- ous phases of routing. 2.1.1. Probability of link validity (P link- valid ) This is defined as the probability of any link which is valid at t = 0, will remain valid...

Ngày tải lên: 23/06/2014, 00:20

... base protocol. So IS-IS can be used for routing IP packets just as well as the other major link- state protocol, the Open Shortest Path First (OSPF) protocol. But why bother having another link- state ... the configuration file are propagated to the routing processes that “speak” router-to-router protocols like OSPF or IS-IS or Border Gateway Protocol (BGP). If the same routing protocol is provisioned on both ... based on an entirely new routing tech- nology called link- state routing. All previous packet-based network technology at that time was based on variations of distance-vector routing (sometimes also...

Ngày tải lên: 27/06/2014, 00:20

... Distance Vecter Routing Protocol. Mặc dù vậy nó vượt trội hơn các giao thức cùng loại khác về khả năng định tuyến và có vài nét giống với các giao thức định tuyến Link State Routing Protocol. • Metric ... định tuyến IGPs. Cụ thể là các giao thức định tuyến động distance vecter protocols và link state protocols. Distance vecter protocols: Sử dụng thuật toán vecter khoảng cách, tính toán khoảng cách ... 2. • EIGRP (Enhanced Interior Getway Routing Protocol) : sử dụng thuật toán DUAL (Diffusing Update Algrorithm) để tính toán đường đi ngắn nhất. Link state protocols: • Sử dụng thuật toán Dijksta’s...

Ngày tải lên: 27/06/2014, 06:51

... base protocol. So IS-IS can be used for routing IP packets just as well as the other major link- state protocol, the Open Shortest Path First (OSPF) protocol. But why bother having another link- state ... routing, and new protocol features all contribute to making routing protocols complex to design, write and deploy effectively in networks. For example, IS-IS started as a link- state routing protocol ... Novell then decided to augment their network architecture with link- state routing. At that time, DEC was widely known for their link- state routing experience, and so Novell recruited Neil Castagnoli,...

Ngày tải lên: 02/07/2014, 20:21

... duties of the routing protocols to report that a certain sub-net is unreachable. The routing protocols propagate this change and all routers along the path recompute their IP routing tables. ... the packet processing stress placed on the routing protocols. However, a modern control plane has to do more than just run a single instance of a routing protocol. It usually also has to run a variety ... (CLI) • Several instances of multiple routing protocols including OSPF, IS-IS and BGP • Several instances of MPLS-related signalling protocols like RSVP and LDP Routing and Forwarding Tables 21 Lookup SRAM memory Forwarding...

Ngày tải lên: 02/07/2014, 20:21

Ngày tải lên: 02/07/2014, 20:21

Ngày tải lên: 02/07/2014, 20:21

Ngày tải lên: 02/07/2014, 20:21

Ngày tải lên: 02/07/2014, 20:21

Ngày tải lên: 02/07/2014, 20:21