ccna textbook

CCNA Experiment 13 STP the Load Balancer Environment: Windows XP , GNS3.0.7 Purpose: Learn how to Achieve load balancing in STP Description: The load balancing of STP is actually the use of another blocking link in the loop to share the load in the network steps: Open the GNS to build the project with the following topology:650) this.width=650; "src=" Http://hi.csdn.net/attachment/201011/21/0_12903238230y3w.gif "/>Note: to SW1 and the SW2 Two devi

CCNA Experiment 15 Protection of the STPEnvironment: Windows XP ,Packet Tracert 5.3.Purpose: To understand how to protect STP NetworkDescriptionBPDU Guard (BPDU protection ):BPDU protection is typically used in PortFast mode. after configuring BPDU protection on a port with PortFast mode enabled , receiving BPDUs will turn the port into a err-disable state . (portfast is typically usedon ports in Access mode)Root guard: The purpose of root protection

Chapter 1: Internetworking Ccna Chinese Reading Notes Cisco Certified Network Associate 640-801 icnd Course Notes Chapter 1 Internetworking Internetworking basic Dividing a large network into several smaller networks is called network segments, which are completed by routers, switches, and bridges. The possible causes of LAN congestion are: 1. Too many hosts exist in one broadcast domain) 2. broadcast storm 3. Multicast 4. l

Yeslab October July 12, instructor Chen ccna + ccnp real machine rack Practical Course Ccna is an entry-level course in the network industry. In order to give students a good understanding of the network, yeslab provides the real Equipment Rack. The students build the topology and complete the configuration to create a real network for the students, in short, as long as the students want to learn, yeslab i

Tags: Cisco CCNA router Password managementfor device security, the device administrator typically sets the user name and password for the device. Here's how to configure 3 passwords, with emphasis in the middle.Username Test password Cisco//This is to set up a layer of accounts and passwordsEnable password 123// This is the Setup admin passwordRouter (config) #line console 0// configuration control PortRouter (config-line) #password 456// Configure p

DoPost (HttpServletRequest request, httpservletresponse response)Throws Servletexception, IOException {TODO auto-generated Method StubRequest.setcharacterencoding ("UTF-8");This.doget (request, response);}}2. Use the $.ajax () method to asynchronously check whether the registered mailbox already existsRegistered Email: nbsp; User name: nbsp;nbsp; Password: Confirm Password: 3. Display JSON data with common page elementsString path = Request.getcontextpath ();String basepath = request.getscheme

After going through a lot of resumes, and decided to continue to recharge their otl, and began to learn the neural network this piece.Found the classic textbook of deep learning. Online Address: http://neuralnetworksanddeeplearning.comBut here is python2.7, and I learned is python3, so some code can not directly exactly shown, first put on Python3 and python2 what is different.Then record what needs to change in the course of learning:Chapter One (ide

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CCNA Experiment Four turn on the WEB Management Service for the routerEnvironment: Windos XP , GNS3.0.7Objective: practice how to turn on the router WEB Management Services, through IE managing the RouterSteps:1.First install the loopback Virtual network card on thephysical machine XP system , open the "Control Panel"-- Add Hardware to do the following650) this.width=650; "src=" Http://hi.csdn.net/attachment/201010/30/0_1288428865pzZC.gif "/>650) thi

IntroductionThis article describes what the IP address and its function and IP address composition, IP address classification, IP subnet partition, subnet mask, public address, private address,VLSM (variable eldest son netmask), CIDR (Non-class inter-domain routing) and other CCNA basics.Article Directory0x1. What is an IP addressthe role of the 0X2.IP address0x3.ipv4 Address Composition0x4.ipv4 Address CategoriesA. Reserved IP addressB. Private IP ad

CCNA Training Course (3) -- Vlan VTP relay single-arm route generation Tree Protocol This is the third day of the CCNA training course. There are many knowledge points on this day, and the experiment content is gradually becoming more complicated.VLAN A vswitch separates the conflict domains and the broadcast domains. A vro separates the conflict domains and the broadcast domains. In a pure exchange network

CCNA Learning must be remembered--Hundred dishesIn the study Shehiren "Computer network" over the name, found that there are some very important but not dissected knowledge points in the book, perhaps in the new version of the content will be constantly updated, but in any case, we can often look at these points of knowledge, strengthen memory. After continuous learning, bloggers will occasionally add something else-something they think is useful to n

From today on we review together to learn the debugging of routers and switches. Based on the CCNA tutorial, we practice a few small commands every day, and make up a little, and finally become an amplifier.Enable: Enter privileged mode and the command prompt becomes hostname# after runConfigure Terminal: Enter the global mode command prompt to change to hostname (config) #Hostname: Naming the deviceExit quit PrivilegeNo IP domain-lookup: Turn off add

CCNA Experiment 24 Security of routing updatesEnvironment: Windows XP , GNS3.0.7.2Objective:Learn how to pass MD5 authentication and passive port protection routing updates, Note that both methods are in EIGRP ,OSPF, RIP, IGRP can be used in all routing protocols. DescriptionMD5 Certification : to prevent invalid routing updates from potentially threatening and damaging the network through routing update authentication between neighbor routers. Pas

CCNA Experiment one landing device consoleEnvironment: Windows XP ,GNS3.0.7Purpose: Know how to log in to a routing device using tools.Steps: First Open the GNS to build the topology environment as follows: 650) this.width=650; "src=" Http://hi.csdn.net/attachment/201010/25/0_1287994002BmG3.gif "/>start R1 and right- view the port connected to the console ( to be used when logging in ) 650) this.width=650; "src=" Http://hi.csdn.net/attachment/201010/

CCNA Experiment 38 ZFW ( Zone firewall ) Environment: Windows XP ,Packet Tracert5.3Objective: To understand the principle and basic configuration of ZFWDescriptionZFW(zone-based policy Firewall), is a zone-based firewall, the firewall policy of zone-based firewall configuration is only effective when data is sent from one region to another. Data in the same region does not apply any policy, so we can use the interface that needs to be used in differ

CCNA Experiment 14 STP redundant backup link (EtherChannel)Environment: Windows XP , GNS3.0.7 , VPCS.exePurpose: Learn how to configure redundant backup links.Steps:1 , open GNS Create the following project:650) this.width=650; "src=" Http://hi.csdn.net/attachment/201011/21/0_1290326291ColF.gif "/>Description:(1) First to add switching modules for SW1 and SW2 two virtual devices(2) Note the console port number for both devices: sw1:2002, sw2:2003(3)

CCNA Experiment 16 fast Spanning Tree Protocol (RSTP)Environment: Windows XP, Packet Tracer5.3Purpose: To understand and configure RSTPDescription: RSTP: Fast Spanning Tree Protocol (Rapid spaning Trees Protocol): This kind of protocol can converge the network faster when the network structure is changed . There are only three port status forbidden ports in RSTP, blocking ports, and listening ports are much shorter than STP convergence time. Steps: