distance vector routing protocols characteristics

Ngày tải lên: 07/07/2014, 00:20

Ngày tải lên: 28/07/2014, 18:21

Ngày tải lên: 01/08/2014, 18:20

... 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 ... 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 ... 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

... overview of routing protocols, including the different types and their advantages and disadvantages. This chapter covers the basic configuration of distance vector protocols, specifically the IP Routing ... show ip protocols command displays all of the IP routing protocols that you have configured and are running on your router. Here’s an example of this command: Router# show ip protocols Routing ... command to view which routing protocols are active on your router, as well as their characteristics and configuration: __________. 11. Enter the router command to clear the routing table: __________. IP...

Ngày tải lên: 18/01/2014, 04:20

... nhưng nó chỉ có một entry trong routing table II. SO SÁNH DISTANCE VECTOR VÀ LINK-STATE: Distance Vector và Link State đều là các giao thức định tuyến động (Dynamic Routing Protocol) cấu hình ... trong routing table của Router1 sẽ không có route nào đến mạng B (10.11.0.0/16). Để giải quyết vấn đề này, dùng static routing hoặc dùng các routing hỗ trợ VLSM. Khi này thì cần phải có các routing ... kỳ. Đặc điểm của distance vector là thời gian hội tụ chậm. Đối với các routers đang chạy routing protocol nhóm DV, định kỳ mỗi 30 giây, các routers sẽ trao đổi toàn bộ bảng routing table sang...

Ngày tải lên: 07/09/2013, 15:00

... principles behind distance vector protocols and link-state protocols. Distance Vector Routing Concepts This section reviews key concepts that underlie the operation of distance vector routing protocols, ... are advertised by distance vector protocols, makes such environments very susceptible to routing loops—for example, when a router running a distance vector protocol broadcasts routing updates ... the vector with the best cost for each route. Hence, routing protocols that are based on the Bellman-Ford algorithm commonly are referred to as distance vector protocols (see Table 1-4). Routing...

Ngày tải lên: 16/10/2013, 12:15

... 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...

Ngày tải lên: 27/10/2013, 20:15

... 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: * ... định tuyến trên router 1 như sau: Router_1#show ip route 133.33.0.0 Routing entry for 133.33.0.0/16 Known via "igrp 1", distance 100, metric 8576 Redistributing via igrp 1 Advertised by ... 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...

Ngày tải lên: 06/11/2013, 04:15

... Also, classless protocols include the subnet mask value along with the route when advertising routing information: distance vector protocols do not include the subnet mask in their routing updates. D:\omh\CertPrs8\934-9\ch11.vp Monday, ... packet The following sections cover these commands. The show ip protocols Command The show ip protocols command displays all of the IP routing protocols that you have configured and are running on your ... nssa Maximum path: 4 Routing for Networks: 0.0.0.0 255.255.255.255 area 0 Routing Information Sources: Gateway Distance Last Update 192.168.1.100 110 00:00:24 192.168.100.1 110 00:00:24 Distance: (default...

Ngày tải lên: 18/01/2014, 04:20

... and the sequence number of the link. This is different from distance vector protocols. Distance vector protocols share their entire routing table with their neighbors with the exception of routes ... you were introduced to the configuration of two distance vector routing protocols: IP RIP and IGRP. This chapter focuses on two advanced routing protocols: OSPF and EIGRP. OSPF is a link state ... table. ý A is incorrect because this is what distance vector protocols use. B is incorrect because this is what link state protocols use. D is a nonexistent routing algorithm. Self Test Answers 41 CertPrs8...

Ngày tải lên: 18/01/2014, 04:20

... Chapter 6 VLSM and CIDR Routing Protocols and Concepts 17 Classless Routing Protocol  Classless routing protocols include the subnet mask with the network address in their routing updates. 44 Route ... and 172.30.3.0/24) as 172.30.0.0.  R3 applies the /8 mask (classful routing protocol) 8 Classful Routing Protocol  Routing protocols, such as RIPv1, only needed to propagate the network address, ... with the route in the routing table. A classless routing protocol includes the subnet mask with the network address in the routing update. 40 CIDR  Classless interdomain routing (CIDR) is a...

Ngày tải lên: 23/02/2014, 09:20

... Only the information regarding the affected link.  Unlike some distance vector routing protocols (RIP), link-state routing protocols do not send periodic updates. OSPF routers do flood their ... routing process, it must be: In the up state. Included in one of the network statements. 43 Advantages of a Link-State Routing Protocol  Builds a Topological Map Distance vector routing protocols ... link- state routing protocol, OSPF. 46 Hierarchical Design  Link-state routing protocols such as OSPF and IS-IS use the concept of areas. Better route aggregation (summarization) Isolation of routing...

Ngày tải lên: 23/02/2014, 09:20

... 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 ... interface-number  Defines a neighboring router to exchange EIGRP routing information.  Instead of using multicast packets, EIGRP exchanges routing information with the specified neighbor using unicast ... circuits  Advantages  IP routing provides dynamic, automatic path setup  Provides best path and backup paths  Provides QoS  Disadvantages  Latency in hop-by-hop Layer 3 lookup  Latency in routing – switching...

Ngày tải lên: 05/03/2014, 17:20

... 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 ... to 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...

Ngày tải lên: 06/03/2014, 07:20

... network command  OSPF Router ID  Verifying OSPF  Examining the Routing Table 44 Verifying OSPF R1# show ip protocols Routing Protocol is “ospf 1” Outgoing update filter list for all interfaces ... 4 Routing for Networks: 172.16.1.16 0.0.0.15 area 0 192.168.10.0 0.0.0.3 area 0 192.168.10.4 0.0.0.3 area 0 Reference bandwidth unit is 100 mbps Routing Information Sources: Gateway Distance ... 10.3.3.3 110 11:29:29 Distance: (default is 110) OSPF Process ID OSPF Router ID Networks OSPF is advertising that are originating from this router OSPF Neighbors Administrative Distance 45 Verifying...

Ngày tải lên: 09/03/2014, 13:20

... Added to the Routing Table l The debug ip routing displays routing table processes for any route, Ÿ directly connected network Ÿ static route Ÿ dynamic route. l Disable debug ip routing by either: Ÿ ... debug ip routing by either: Ÿ undebug ip routing Ÿ undebug all R2# undebug all All possible debugging has been turned off ! or ! R2# undebug ip routing IP routing debugging is off R2# 1818 Unsolicited ... to display the routing table. l Initially, the routing table is empty if no interfaces have been configured. l Note: Static routes and dynamic routes cannot be added to the routing table until...

Ngày tải lên: 09/03/2014, 13:20

Ngày tải lên: 09/03/2014, 13:20

Ngày tải lên: 09/03/2014, 13:20