link state routing protocol vs distance vector

Ngày tải lên: 28/07/2014, 18:21

Ngày tải lên: 01/08/2014, 18:20

... R1(config-router)#^Z A B 2 Distance Vector vs. Link State Distance Vector Distance Vector ã Updates frequently ã Each router is "aware" only of its immediate neighbors ã Slow convergence ã Prone to routing ... 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 ... this interface interface 32 OSPF Network Types 50 show ip protocols show ip protocols Router# ã Verifies the configured IP routing protocol processes, parameters and statistics Verifying OSPF...

Ngày tải lên: 06/03/2014, 07:20

Ngày tải lên: 27/08/2014, 15:47

... RIP: Routing Information Protocol version 1 (RIPv1) là một giao thức đơn giản và vì vậy hoạt động hiệu quả trong những mạng nhỏ ít có những thay đổi. RIP là giao thức đầu tiên trong nhóm distance ... (link failure occurs). Holddown Sau khi quyết định rằng một địa chỉ mạng trong bảng định tuyến là không còn hợp lệ, quá trình định tuyến sẽ chờ trong khoảng thời gian 3 lần thời gian gửi routing ... via "igrp 1", distance 100, metric 8576 Redistributing via igrp 1 Advertised by igrp 1 (self originated) Last update from 192.168.6.2 on Serial0, 00:00:20 ago Routing Descriptor Blocks: *...

Ngày tải lên: 06/11/2013, 04:15

... v2.05-26 Summary ã Distance vector- based routing algorithms (also known as Bellman-Ford algorithms) pass periodic copies of a routing table from router to router. ã When the topology in a distance vector protocol ... to: ã Describe the features offered by distance vector routing protocols and give examples of each ã Describe the issues associated with distance vector routing and identify solutions to those ... router. Maintaining Routing Information â 2002, Cisco Systems, Inc. All rights reserved. ICND v2.05-4 ã Routers pass periodic copies of routing table to neighbor routers and accumulate distance vectors. Distance...

Ngày tải lên: 17/02/2014, 08:20

... small event-triggered 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 ... v2.05-11 Summary ã 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. ã Link- state routing algorithms ... complex ã Troubleshooting easier than in distance vector routing © 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—5-7 Benefits of Link- State Routing ã Fast convergence: changes are...

Ngày tải lên: 17/02/2014, 08:20

Ngày tải lên: 07/07/2014, 00:20

Ngày tải lên: 25/07/2014, 08:20

Ngày tải lên: 28/07/2014, 18:21

Ngày tải lên: 01/08/2014, 18:20

... trình này cứ lặp đi lặp lại (vì A sẽ gửi lại 1 update nói với B và D rằng la N1 vẫn good) ===> routing loop Nguyên nhân: B và D có thể nhận được update từ A còn C thì không , bởi vì 1 "HÔI ... route bị poison ==> Do có Split horizon, thông tin về route đến N1 không bị lặp đi lặp lại trên link giữa A và E (count-to- infinite) Split horizon with Poison reverse : Bình thường, A không...

Ngày tải lên: 27/10/2013, 20:15

... 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-> ... 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

... distace 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 ... 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 cả các distance ... 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

... can ping it when troubleshooting. Enhanced Interior Gateway Protocol (EIGRP) EIGRP is a Cisco proprietary distance- vector routing protocol. It was created to be used with basically any media ... 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

... to basic IP routing protocol configuration. CERTIFICATION OBJECTIVE 10.02 IP RIP IP RIP (Routing Information Protocol) comes in two different versions: 1 and 2. Version 1 is a distance vector protocol ... OBJECTIVE 10.03 IP IGRP The Interior Gateway Routing Protocol (IGRP) is a Cisco-proprietary routing protocol for IP. Like IP RIPv1, it is a distance vector protocol. However, it scales better than RIP ... distance vector protocol. RIP is a very old protocol and therefore is very stable; in other words, Cisco really doesn’t do that much development on the protocol, unlike other, more advanced protocols....

Ngày tải lên: 18/01/2014, 04:20

... 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 ... the most popular routing protocols among network engineers. EIGRP can be referred to as a hybrid protocol. It combines most of the characteristics of traditional distance vector protocols with ... characteristics of link- state protocols. Specifically, EIGRP is “enhanced” by using four routing technologies: ã Neighbor discovery/recovery ã Reliable Transport Protocol (RTP) ã DUAL nite-state...

Ngày tải lên: 24/01/2014, 19:20

... 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