based hierarchical link state routing protocol

... www.bkacad.com Link- State Routing Học viện mạng Bach Khoa - Website: www.bkacad.com Link- State Routing • Link state routing protocols – Also known as shortest path first algorithms – These protocols ... www.bkacad.com Link- State Routing • Routers with link- state routing protocols use a Hello protocol to discover any neighbors on its links A neighbor is any other router that is enabled with the same link- state ... www.bkacad.com 21 Implementing Link- State Routing Protocols Học viện mạng Bach Khoa - Website: www.bkacad.com 22 Advantages of Link- State Routing Protocols Routing protocol Router can Builds independent...

Ngày tải lên: 28/07/2014, 18:21

... the routing table ITE PC v4.0 Chapter © 2007 Cisco Systems, Inc All rights reserved Cisco Public 20 Link- State Routing Protocols Advantages of a Link State Routing Protocol Link- State Routing protocol ... benefits and requirements of link- state routing protocols ITE PC v4.0 Chapter © 2007 Cisco Systems, Inc All rights reserved Cisco Public Link- State Routing Link state routing protocols -Also known as ... routing protocols, link- state routing protocols not send periodic updates Hierarchical Design • Link- state routing protocols such as OSPF and IS-IS use the concept of areas Multiple areas create a hierarchical...

Ngày tải lên: 01/08/2014, 18:20

... with link- state routing and identify solutions to those issues • Describe the features of balanced hybrid routing protocols © 2002, Cisco Systems, Inc All rights reserved ICND v2.0—5-3 Link- State ... Balanced Hybrid Routing • Shares attributes of both distance vector and link- state routing © 2002, Cisco Systems, Inc All rights reserved ICND v2.0—5-10 Summary • Link- state routing uses LSAs, ... Benefits of Link- State Routing • Fast convergence: changes are reported immediately by the source affected • Robustness against routing loops: – Routers know the topology – Link- state packets...

Ngày tải lên: 17/02/2014, 08:20

... reactive protocols allow routes to be computed on demand Hybrid protocols combine properties of both proactive and reactive protocols Among those protocols, it is known that gradient -based routing protocols ... the first class, the link cost is defined as the amount of energy consumption or the hop count when establishing the Routing protocols in WSNs Proactive Gradient -based routing protocols Reactive ... by the most overloaded sensor B Gradient -based routing protocols with load balancing In this section, two classes of existing gradient -based routing protocols with load balancing which are mentioned...

Ngày tải lên: 21/06/2014, 00:20

... will use the LQI for link quality estimation Link Quality -Based Routing Metrics for Low-Power Wireless Networks This section surveys the most relevant link quality -based routing metrics that ... bad quality links, but it does not distinguish the quality of the links that are considered for path selection 4.3 Link Quality Routing One of the first attempts at routing based on link qualities ... quality links) Awareness of link quality No Properties of the metric Quality of all links Link quality is distinguished estimation method No — Nature of the routing protocol — Yes No Packet-based...

Ngày tải lên: 21/06/2014, 11:20

... and routing protocols are briefly investigated to illustrate the basic design principles CHAPTER PROTOCOL DESIGN GUIDELINES AND PRELIMINARY REMARKS 15 2.2.1 MAC Protocols In the MAC layer, protocol ... routing protocols should be carefully designed to support a robust infrastructureless networking architecture Routing protocols for mobile ad hoc networks (MANET) appear to fit this need However, routing ... procedure and the priority -based probabilistic routing approach In Chapter 5, simulation results for the performance evaluations of PRIMP and other comparable routing protocols are presented, and...

Ngày tải lên: 26/09/2015, 09:47

... subnet chổ có nhiều subnet có entry routing table II SO SÁNH DISTANCE VECTOR VÀ LINK- STATE: Distance Vector Link State giao thức định tuyến động (Dynamic Routing Protocol) cấu hình thiết bị layer ... subnet mask Vì routing protocol nhận routing update net khác (các network không kết nối trực tiếp), classfull routing protocol lấy giá trị subnet mask cổng (interface) router mà nhận routing update ... thêm đường đến mạng B Chính routing table Router1 route đến mạng B (10.11.0.0/16) Để giải vấn đề này, dùng static routing dùng routing hỗ trợ VLSM Khi cần phải có routing protocol support VLSM (...

Ngày tải lên: 07/09/2013, 15:00

... the data link protocol The next section of this chapter looks at yet another routing protocol classification: distance vector and link- state protocols Distance Vector Versus Link- State Protocols ... operation of the link- state routing protocols and their respective protocols in more detail Metrics in Link- State Protocols Both OSPF and IS-IS use metrics, which are measures of link bandwidth ... classification of routing protocols: interior gateway routing protocols (for intradomain routing) and exterior gateway protocols (for interdomain routing) Figure 1-9 shows two routing domains,...

Ngày tải lên: 16/10/2013, 12:15

... 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-> Active 09:26:57: %STANDBY-6-STATECHANGE: ... so 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-> Init ... and 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 We...

Ngày tải lên: 11/12/2013, 14:15

... bảo EIGRP có module chính: + Protocol- Dependent Modules + Reliable Transport Protocol (RTP) + Neighbor Discovery/ Recovery + Diffusing Update Algorithm (DUAL) a/ Protocol- Dependent Modules EIGRP ... có metric nhỏ lưu vào routing table Và neighbor qung bá route Seccessor The DUAL Finite State Machine Khi router không thực diffusing computations route trạng thái passive state Khi router tính ... passive state Nếu FS tìm thấy update gửi tới tất neighbor state không đổi Nếu không tìm thấy FS topology table router thực diffusing computations route chuyển trạng thái sang active state Cho...

Ngày tải lên: 12/12/2013, 17:15

... Interior Routing Protocol Denise Donohue, Global Knowledge Instructor, CCIE #9566 Introduction Choosing an IP routing protocol is an important step The right protocol can make your routing operate ... paper, for those wishing more information on a particular protocol Routing Information Protocol (RIP) RIP was one of the first IP routing protocols It is simple to understand and simple to configure ... for each protocol, as well as suggestions on designing your network to maximize the efficiency of each protocol This paper assumes the reader is already familiar with interior routing protocols...

Ngày tải lên: 17/01/2014, 06:20

... Chapter 11 Configuring Advanced Routing Protocols TWO-MINUTE DRILL OSPF ❑ OSPF is an open-standard, link- state protocol It’s classless and supports hierarchical routing and route summarization ... up-to-date link state information It does this with a destination address of 224.0.0.5 (all OSPF routers on the segment) When building the routing table using link A two-way state indicates state ... Seq: Sequence number T: OSPF packet type (1-hello, 2-data description, 3 -link state request, 4 -link state update, 5 -link state acknowledgment V: D:\omh\CertPrs8\934-9\ch11.vp Monday, August 04,...

Ngày tải lên: 18/01/2014, 04:20

... Chapter 11 Configuring Advanced Routing Protocols TWO-MINUTE DRILL OSPF ❑ OSPF is an open-standard, link- state protocol It’s classless and supports hierarchical routing and route summarization ... up-to-date link state information It does this with a destination address of 224.0.0.5 (all OSPF routers on the segment) When building the routing table using link A two-way state indicates state ... Seq: Sequence number T: OSPF packet type (1-hello, 2-data description, 3 -link state request, 4 -link state update, 5 -link state acknowledgment V: D:\omh\CertPrs8\934-9\ch11.vp Monday, August 04,...

Ngày tải lên: 18/01/2014, 04:20

... 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), ... DUAL 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 ... Gateway Routing Protocol (EIGRP) q AS number of the destination q Configurable administrator tag q ID of the external protocol q Metric from the external protocol q Bit flags for default routing...

Ngày tải lên: 18/01/2014, 05:20

... of link- state protocols Specifically, EIGRP is “enhanced” by using four routing technologies: • • • • Neighbor discovery/recovery Reliable Transport Protocol (RTP) DUAL finite -state machine Protocol- dependent ... 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 ... 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 protocol...

Ngày tải lên: 24/01/2014, 19:20

... Classless Routing Protocol  Classless routing protocols include the subnet mask with the network address in their routing updates 17 Classless Routing Protocol  With a classless routing protocol: ... Classful IP Addressing  Classful Routing Protocols  Classless IP Addressing  Classless Routing Protocols Classful and Classless Routing Protocols  Routing protocols:  classful or classless ...  Only classless routing protocols can propagate supernets  Classless routing protocols include both the network address and the mask in the routing update  Classful routing protocols cannot...

Ngày tải lên: 23/02/2014, 09:20

... in the routing table 41 Implementing Link- State Routing  Advantages of a Link- State Routing Protocol  Requirements of a Link- State Routing Protocol  Comparison of Link- State Routing Protocol ... Link- State Routing Protocol Comparison of Link- State Routing Protocol Link- State Routing  Link- State Routing Protocols  Introduction to the SPF Algorithm  Link- State Routing Process  Step 1: Learning ... Constructing a LinkState Database Shortest-Path First (SPF) Tree  Implementing Link- State Routing Protocols Advantages of a Link- State Routing Protocol Requirements of a Link- State Routing Protocol...

Ngày tải lên: 23/02/2014, 09:20

... Distribution Protocol  Enhanced version of the Resource Reservation Protocol  An interior routing protocol, such as OSPF or EIGRP is also used within the MPLS network to exchange routing information ... assigned an independent routing table - the virtual routing and forwarding (VRF) table in the PE router  PE routers maintain separate routing tables for each customer  Routing across the provider ... Forwards packets based on the label  After a path has been established:  Packets destined to the same endpoint with the same requirements can be forwarded based on these labels without a routing decision...

Ngày tải lên: 05/03/2014, 17:20

... Vector vs Link State Distance Vector • Updates frequently • Each router is "aware" only of its immediate neighbors • Slow convergence • Prone to routing loops • Easy to configure Link State • Updates ... and Link State Advertisements (LSAs) build and maintain the topological database • Hello packets are addressed to 224.0.0.5 10 Link State Advertisement (LSA)  An OSPF data packet containing link ... the topology of the network Link State • More router resource intensive • Updates require less bandwidth • Has detailed knowledge of distant networks and routers Link State Example OSPF IS-IS...

Ngày tải lên: 06/03/2014, 07:20

... minimum edit distance from state to state j, and the cost(i,j) is the cost of insertion, deletion or substitution from state j to state i The equation means the minED of state i can be computed ... minED of state i can be computed by the accumulated minEDcost of state j in the phase p The state j belongs to the have-been-calculated state set {X0 , ,Xp−1 } in phase p In phrase p, we compute ... in picture composition Therefore, we build a FST -based model to extract features related to the transcription assessment in this paper As the FSTbased model is similar to the BOW metrics, it is...

Ngày tải lên: 07/03/2014, 18:20