routers routes and routing tables

... Files and Directories Featured in This Part of the Book Part VII: Routing Chapter 30 Routing: Concepts Section 30.1 Routers, Routes, and Routing Tables Section 30.2 Essential Elements of Routing ... protocols and the details of the ARP neighboring protocol used by IPv4 Routing Part VII, the biggest one of the book, describes the routing cache and tables Advanced features such as Policy Routing and ... file and directory names, program and command names, command-line options, URLs, and new terms Constant Width Used in examples to show the contents of files or the output from commands, and in...

Ngày tải lên: 13/08/2014, 04:21

... keyword and the associated handler with the _ _setup macro, defined in include/linux/init.h This is its syntax: _ _setup(string, function_handler) where string is the keyword and function_handler ... counterpart of probe and is used to clean up any data structure and state Network devices use this function to release the allocated I/O ports and I/O memory, to unregister the device, and to free the ... self-explanatory vendor and device are usually sufficient to identify the device.subvendor and subdevice are rarely needed and are usually set to a wildcard value (PCI_ANY_ID) class and class_mask represent...

Ngày tải lên: 13/08/2014, 04:21

... frame is to be handed to the bridging code When the frame is handed to the bridging code and the latter consumes it, handle_bridge returns In all other cases, handle_bridge returns and netif_receive_skb ... shortly to dequeue and handle the frames Figure 10-3 shows what it checks for and the flow of its events The figure is practically longer than the code, but it is useful to help understand how netif_rx ... section "Enabling and Disabling Transmissions " In both cases, reception and transmission, the kernel provides a set of functions to set, clear, and retrieve the status of the receive and transmit...

Ngày tải lên: 13/08/2014, 04:21

... Timers The STP uses both per-bridge and per-port timers In Tables 15-4 and 15-5, you can see the default timeouts, and what the allowed values are, for per-bridge and per-port timers, respectively.[*] ... DESIGNATED role and maintains its root bridge role On the other hand, when BR3 receives the BPDU from BR1, it realizes that BR1 has a better bridge ID (and thus a better priority vector) and therefore ... implements both routing and bridging, we can merge the two devices into a single Linux system and obtain something like the topology in Figure 16-2(a) The network connection between the bridge and the...

Ngày tải lên: 13/08/2014, 04:21

... dùng BGP để kết nối với ISP khác Thường internal routers có default gateway bgp routers bgp routers phân phối prefixes học từ IGP để đẩy bgp routers ISP khác Một trường hợp khác cần đến route ... trị Kiểm soát routing update redistribution Kiểm soát routing update hữu ích nhiều trường hợp Các lý để kiểm soát routing update gồm: - Che dấu vài network khỏi phần lại Ngăn ngừa routing loop ... dùng routing static, bên dynamic, bên RIP, bên dùng IGRP phải dùng lệnh redistribute Router biên Lệnh redistribute dùng để chia thông tin định tuyến miền routing khác Một miền định tuyến (routing...

Ngày tải lên: 25/01/2014, 09:20

... Classful and Classless Addressing  Classful IP Addressing  Classful Routing Protocols  Classless IP Addressing  Classless Routing Protocols Classful and Classless Routing Protocols  Routing ... route in the routing table A classless routing protocol includes the subnet mask with the network address in the routing update  Propagating VLSM and supernet routes requires a classless routing ... 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:...

Ngày tải lên: 23/02/2014, 09:20

... Link-State Routing Protocols Advantages of a Link-State Routing Protocol Requirements of a Link-State Routing Protocol Comparison of Link-State Routing Protocol Link-State Routing  Link-State Routing ... explanation and details, please read the chapter/curriculum  Book: Routing Protocols and Concepts By Rick Graziani and Allan Johnson ISBN: 1-58713-206-0 ISBN-13: 978-58713206-3 Topics  Link-State Routing ... Functionality and configuration not complex Algorithm is easy to understand Introduction Link-State Routing Protocols Distance Vector Link-State  Distance vector routing protocols - road signs Distance and...

Ngày tải lên: 23/02/2014, 09:20

... curriculum/book  For further explanation and details, please read the chapter/curriculum  Book:  Routing Protocols and Concepts  By Rick Graziani and Allan Johnson  ISBN: 1-58713-206-0  ... router ospf command  The network command  OSPF Router ID  Verifying OSPF  Examining the Routing Table  The OSPF Metric  OSPF Metric  Modifying the Cost of the Link  OSPF and Multiaccess ... ospf command  The network command  OSPF Router ID  Verifying OSPF  Examining the Routing Table Topology  Notice that the addressing scheme is discontiguous  OSPF is a classless routing protocol...

Ngày tải lên: 09/03/2014, 13:20

... Router Ÿ Routers are computers Ÿ Router CPU and Memory Ÿ Internetwork Operating System Ÿ Router Bootup Process Ÿ Router Ports and Interfaces Ÿ Routers and the Network Layer Path Determination and ... Configuration Building the Routing Table Ÿ Introducing the Routing Table Ÿ Directly Connected Networks Ÿ Static Routing Ÿ Dynamic Routing Ÿ Routing Table Principles Inside the Router l Routers are computers ... Router CPU and Memory l Internetwork Operating System l Router Bootup Process l Router Ports and Interfaces l Routers and the Network Layer Routers are Computers Leonard Kleinrock and the first...

Ngày tải lên: 09/03/2014, 13:20

... Topics l Static Routes - Next-Hop Addresses Ÿ ip route command l Routers and the Network Ÿ Configuring Static Routes Ÿ Role of the Router Ÿ Routing Table Principles Ÿ Introducing ... Networks l Summary and Default Static Routes Ÿ Verifying Changes to the Ÿ Summary Static Routes Routing Table Ÿ Default Static Routes Ÿ Devices on Directly Connected l Managing and Troubleshooting ... to routing table l The debug ip routing command will display any changes that the router performs when adding or removing routes Ÿ After no shutdown interface up and up Ÿ Network added to routing...

Ngày tải lên: 09/03/2014, 13:20

... sending and receiving routing information Mechanism for calculating the best paths and installing routes in the routing table Mechanism for detecting and reacting to topology changes 12 Routing ... EIGRP, and so on) 33 Periodic Updates Some distance vector routing protocols use periodic updates with their neighbors and to maintain up-to-date routing information in the routing table RIPv1 and ... configured static routes Incorrectly configured route redistribution (redistribution is a process of handing the routing information from one routing protocol to another routing protocol and is discussed...

Ngày tải lên: 09/03/2014, 13:20

... indicates RIP routes Because this command displays the entire routing table, including directly connected and static routes, it is normally the first command used to check for convergence Routes might ... interfaces containing its own routing table so that RIP neighbors can be informed of any new routes 11 IP Address Classes and Classful Routing No subnet mask RIPv1: Classful routing protocol Does not ... Interior Gateway Routing Protocol (EIGRP) igrp Interior Gateway Routing Protocol (IGRP) isis ISO IS-IS iso-igrp IGRP for OSI networks mobile Mobile routes odr On Demand stub Routes ospf Open...

Ngày tải lên: 09/03/2014, 13:20

... other RIPv1 routes? Redistribution involves taking the routes from one routing source and sending those routes to another routing source Routes can only be redistributed into a dynamic routing protocol ... Configuring RIPv2 Enabling and Verifying RIPv2 Auto-Summary and RIPv2 Disabling Auto-Summary in RIPv2 Verifying RIPv2 Updates VLSM and CIDR RIPv2 and VLSM RIPv2 and CIDR Verifying and Troubleshooting ... differences between a classful routing protocol (RIPv1) and a classless routing protocol (RIPv2) RIPv1 and RIPv2 RIPv2 is actually an enhancement of RIPv1’s features and extensions rather than an...

Ngày tải lên: 09/03/2014, 13:20

... utilization and management We used software tools such as Mapinfo 8.5 and Excel in order to modify maps and reckon the surveyed data And we also used the comparative method to collate Viet Nam standards ... published literature, and legal and policy documentation in relation to changes in lagoon’s resource management policy, aquaculture development activities under land policy and globalization of ... edible seaweeds and farm on the sandy land at its edge The area used for food production is 269 hectares, of which 220 hectares are planted spring paddy crop (from December to April) and 49 hectares...

Ngày tải lên: 14/03/2014, 15:20

... feedback and monitoring system, and incentives and career prospects, economic resource base and political commitment will largely determine the amount of attention they receive in the design and implementation ... interviews and FGD; with nurse and CHW Age nurse 25-53; CHWs 30-55; predominantly women the community, a stable job and income and training The main discouraging factors were related to low salaries and ... of China and Community health agents in Brazil 10 (Jokhio, Winter, & Cheng, 2005) Pakist an Cluster Randomized control sampling of subdistricts randomly assigned delivery kits to TBAs and LHWs...

Ngày tải lên: 14/03/2014, 20:20

... Level Routes Longest Match: Level Routes Routing Behavior Classful and Classless Routing Behavior Classful Routing Behavior: no ip classless Classless Routing Behavior: ip classless The Routing ... The Routing Table Structure Topology Routing Table Entries Level Routes Parent and Child Routes: Classful Networks Parent and Child Routes: Classless Networks Routing Table Lookup Process Steps ... have routes to subnets 172.16.1.0/24, 172.16.2.0/24, or 172.16.3.0/24 32 The Route Lookup Process Routing Table Step The router examines level routes, including network routes and supernet routes, ...

Ngày tải lên: 18/03/2014, 14:20

... Autonomous Systems and Process IDs The router eigrp Command The network Command Verifying EIGRP Examining the Routing Table EIGRP Metric Calculation EIGRP Composite Metric and the K Values EIGRP ... bandwidth Command Calculating the EIGRP Metric DUAL DUAL Concepts Successor and Feasible Distance Feasible Successors, Feasibility Condition, and Reported Distance Topology Table: Successor and ... Introduction to EIGRP Instead of hop count, both IGRP and EIGRP use metrics composed of bandwidth, delay, reliability, and load Only bandwidth and delay are used by default EIGRP Message Format...

Ngày tải lên: 18/03/2014, 14:20

... to Dynamic Routing Protocols Perspective and Background Network Discovery and Routing Table Maintenance Dynamic Routing Protocol Advantages Classifying Dynamic Routing Protocols IGP and EGP Distance ... of Dynamic Routing Protocols A routing protocol is a set of processes, algorithms, and messages that are used to exchange routing information and populate the routing table with the routing protocol’s ... on its interfaces The router shares routing messages and routing information with other routers that are using the same routing protocol Routers exchange routing information to learn about remote...

Ngày tải lên: 18/03/2014, 14:20

... Public 23 Routing Table Structure  Maintaining routing tables – Dynamic routing protocols are used to share routing information with other router & to maintain and up date their own routing table ... Routing Table Structure  Static routes in the routing table – Includes: network address and subnet mask and IP address of next hop router or exit interface – Denoted with the code S in the routing ...  Connected and Static routes © 2007 Cisco Systems, Inc All rights reserved Cisco Public 22 Routing Table Structure  Dynamic routing protocols – Used to add remote networks to a routing table...

Ngày tải lên: 03/04/2014, 13:45

Ngày tải lên: 18/05/2014, 09:24