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Lab line connection diagram:  Lab content:Test Machine configuration [display]DCRS-5526S ConfigurationSwitchA (Config) # vlan 10SwitchA (Config-Vlan10) # switchport interface ethernet 0/0/1-8Set the port Ethernet0/0/0/1 access vlan 10

1. Point-to-point communicationPoint-to-point is a physical topology, such as optical fiber, which must be a point-to-point connection and a ddnleased line. That is, no machine exists in the middle of each machine at both ends. Point-to-point is at

"Error 800: cannot establish a VPN connection" occurs when you connect to a VPN. The following are generally the reasons: 1. Check that the "destination host name or IP address" in the configuration uses a domain name instead of an IP address.

Use R3 to set the ip default-network 5.0.0.0 as the default gateway for R1 and R2 to access the Internet 111.111.111.111.View the Management Distance and latency of the v5.0.0.0 routes by using show ip VPN to all, compare the AD/FD, calculate the va

Headquarters RouterEnConf tIp router 0.0.0.0 0.0.0.0 200.0.0.2Crypto isakmp policy 1Encryption 3desHash shaAuthentication pre-shareGroup 2Lifectime 10000ExitCrypto isakmp key benet address 201.0.0.2Access-list 100 permit ip 192.168.1.0 0.0.255 192.16

STP spanning tree protocol is used to prevent layer-2 loop protocols.There are several terms in the Spanning Tree: root bridge root port specifies port root path overhead optional PortSeveral statuses of ports in the build treeDisable not

R1----------SW------------R2Condition: R1: 192.168.1.1 mac: a R2: 192.168.1.2 mac: BSw is a layer-2 Switch When R1 packets are forwarded to R2:When R1 receives the data packet, it queries the route table of R1. The purpose of querying the route

To log on to the vro configuration page, enter 192.168.0.1 in the browser address bar and enter the user name and password in the following dialog box. By default, the user name is admin and the password is blank.However, if the password entered

Tool used in the experiment: Xiao fan Simulator 1. Configure interface information on each vroR1Router>Router> enableRouter # config terminalRouter (config) # hostname R1-jinR1-jin (config) # interface loopback 0R1-jin (config-if) # ip address 1.1.1

  Most network devices now support snmp, which can be used for better O & M, such as cisco switches and routers. The specific configuration methods are shared below.   1. Configure the SNMP proxy for the Cisco device: # Snmp-server community public

  All routers connected to the same OSPF region will learn the same topology data. Each vro stores data in the link status database consisting of The Link Status announcement (LSA. Then, the router runs the SPF (Shortest Path First) algorithm on

1.1 HTTP protocol analysis tool-HttpWatch and HttpFoxMost of the actually deployed Server Load balancer applications perform Server Load balancer on Web applications, and the core of Web applications is HTTP. Therefore, we need a powerful tool that

  Requirements:   1. Scientific   2. Rationality   3. scalability   4. Ease of Management       Data: Binary: 128 64 32 16 8 4 2 1   11111111.111111.111111111111.111111   Case: A university now needs to build a network. In order to facilitate the

Summary of ARP ARP: Address Resolution Protocol. RARP: Reverse Address Resolution Protocol. Different networks, such as Ethernet and Token networks, have different addressing mechanisms at the data link layer. In an Ethernet LAN, a host sends

  RJ45 pin leads and Class 5 Wiring   RJ45 is a common Ethernet interface with eight copper wires. A network cable has two headers. The two ends are called a direct line, and the two ends are called a cross line. The full image is called an inverted

In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection, as shown in figure 1.(1) first handshake: when A connection is established, client A sends the SYN Packet (SYN = j) to server B and enters the

  First, the topology is as follows:         I. PC1 sets 192.168.1.254 as its default gateway.   When PC1 communicates with PC2 for the first time, we all know that when data is encapsulated between Layer 3 and Layer 2, ARP is called to

  Summary of 802.3 frames of forward code Let's first look at a frame structure. We can easily understand and even capture packets from the data link layer, but the front guide code is not so easy to see its real structure. The authorization

PortFast accelerates the convergence of terminal hosts into the stp network.Only applicable to ports that are connected to the host (Computer) on the vswitch and should not be used on the ports of network devices that are connected to the vswitch,

Put the three Protocols together for learning because these three protocols are on the same layer. ARP is used to find the Mac address of the Ethernet NIC of the target host, and the IP address carries the message to be sent. The data link layer can