ccna commands

(I) install gns3If the installation process prompts that winpacp has been installed, select "cancel" (Ii) Configure basic gns3 Parameters Select Step 1 General:Configure two locations① Path for storing the Topology② Store temporary files Dynamips:① This is an important component for iOS simulation. It must be associated with the gns3 installation directory. ② Directory for storing temporary files ③ Then perform the test: Capture: Temporary directory for storing captured files Qemu:S

Configuration: PC1 to pingPC2 PC> ping192.168.40.2 Pinging192.168.40.2 with 32 bytes of data: Reply from192.168.40.2: bytes = 32 time = 161 ms TTL = 125 Reply from 192.168.40.2: bytes = 32 time = 148 ms TTL = 125 Reply from192.168.40.2: bytes = 32 time = 132 ms TTL = 125 Reply from192.168.40.2: bytes = 32 time = 154 ms TTL = 125 Ping statistics for192.168.40.2: Packets: Sent = 4, stored ED = 4, Lost = 0 (0% loss ), Approximate roundtrip times in milli-seconds: Minimum = 132 ms, Maximum = 161 ms

[Lab environment] Cisco Packet Tracer 5.3.2 [PURPOSE] Do not describe the basic commands of Cisco IOS too much. Focus on learning Common Cisco IOS skills to improve the efficiency of subsequent experiments. [Experiment topology] Lab procedure] 1. Connect the device to the vro using the Console line according to the topology. 2. Turn off the router power (figure shows the power position of the simulator. The real machine is usually behind the device)

[Lab environment] GNS3 (Because Packet Tracer does not support DHCP-related commands, the GNS3 Simulator Based on the cisco ios image file can also be used on a real machine) [PURPOSE] Exercise configuring the DHCP service on a Cisco router to automatically allocate IP addresses [Experiment topology] Lab procedure] 0. Connect the device according to the topology and configure the IP address of the router port. The client uses DHCP to obtain the IP

[Lab environment] Cisco Packet Tracer 5.3.2 [PURPOSE] I will not describe the basic commands of Cisco IOS too much. I will focus on some common Cisco IOS skills to improve the efficiency of subsequent experiments. [Experiment topology] Lab procedure] 1. Configure the Cisco Packet Tracer according to the topology and select Console port connection. 2. Double-click PC0 or PC1 and select Terminal Mode for serial port connection. 3. Continue with config

incoming interface flooding.2. Receive a data frame from an interface, find the MAC Address table of the switch based on the destination MAC address of the data frame, and if found, forward this data frame only from the interface corresponding to the MAC address table.Password cracking of the router:Ahead: Legacy routers need to remain configuredPress CTRL + C during device restartEnter the ROM system:Rommon 2 > Confreg 0x2142//Modify register encoded as 0x2142, purpose skip to load Startup-con

1. RIP (Route Information protocol) routing Information selection protocol RIP is a distance vector routing protocol, which has two versions: V1 and V2. It belongs to the characteristics of RIP1. use the number of hops as the metric value. The maximum number of hops is 15. groups with more than 15 hops will be discarded. use the local broadcast shared route information. The default broadcast period is 30 seconds, the suppression period is 180 seconds, and the refresh period is 240 seconds. updat

converted to clear text and that non-command text such as "--more--" and IOS messages should also be deleted. This process is discussed in the experiment.In addition, the device must be set to global configuration mode in the CLI to receive commands from a text file that is being copied.The steps to use HyperTerminal are as follows:1. Locate the text document you want to copy to the device and open it.2. Copy all text.3. In the Edit menu, click Paste

Access Control List (ACL) is a List of router interface commands used to Control inbound and outbound data packets. ACL applies to all routing protocols, such as IP, IPX, and AppleTalk. The ACL is also defined based on each protocol. If the router interface is configured to support three Protocol IP addresses, AppleTalk, and IPX, you must define three ACLs to control the data packets of these three protocols. The role of ACL ACL can limit network tra

by the server The following are the configuration cases of PAP: Network Topology: PAP client: R1#ping 10.10.10.2Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 16/40/84 ms PAP Server Configuration: R2#enR2#conf tEnter configuration commands, one per line. End with CNTL/Z.R2(config)#usR2(config)#username oracle passR2(config)#use

and commands of Cisco router password recovery. (10 points)1. Restart, press and hold Ctrl+break (or CTRL + C) when power is added.2. Enter Remmon mode, input Confreg 0x2142 (4 = Skip startup-config)3. Reset Restart Skip Configuration Wizard4. Change the password5. Enter Config-register 0x2102 Recovery Register Value6. Please write out the key steps, commands (10 points) to upgrade Cisco router IOS1. Back

[Lab environment] Cisco Packet Tracer 5.3.2 [PURPOSE] Simulate IOS damage on a Cisco device and practice how to fix IOS in ROM Monitor mode [Experiment topology] Lab procedure] 1. Connect the device according to the topology: Cisco devices do not matter whether they use vswitches or vrouters. In this example, 2811 vrouters are used. On the Server, enable the TFTP Server. There is a Cisco ios image file on it. In the real environment, you can use a PC. After installing the tftpd software, you can

This article lists the basic configurations and common configuration commands of Cisco routers in detail for actual operation problems. I believe this article will help you. Start the interface and assign an IP Address:Router>Router> enableRouter #Router # configure terminalRouter (config )#Router (config) # interface Type PortRouter (config-if) # no shutdownRouter (config-if) # ip address IP-Address Subnet-MaskRouter (config-if) # ^ z Configure the R

A repeated instruction is a set of instructions for operating the data buffer. The data buffer is usually a byte array, which can be a single word or double word. (Intel 'calls these commands string commands) The most common data buffer operation commands are movsx, CMPs, stosx, and scasx. X can be B or W, and D represents byte, word, and dual-word, respectively

administrator-M: Specifies that the group member and-a use almost-R: Remove password-r: Restrict user login group, only members in group can join the group with NEWGRPGpasswdgroupname : If the system has a Peter account, the account itself is not a member of the GroupName group, use NEWGRP need to enter a passwordLet the user temporarily join the group, and then the file group created by Peter will be groupname. So this way you can temporarily let Peter build the textUse other groups instead of

1. Getting Help information: ManMan ls: Get help with ls commandMan services: View the Help information for profile services, directly add the file name, no absolute path requiredHelp: 1 indicates help for the command, 5 indicates help for the configuration fileMans 1 passwd2. View the command description: Whatis3. Production See profile information: Apropos profile Name3. Get help with Shell built-in commands:Help umask: View the umask command's helpful information4. Options for viewing

Statements in assembly language programs can be composed of commands, pseudo commands, and macro commands. Command: Each Command corresponds to a CPU operation. A pseudo-command is also called a pseudo-operation. It is an operation processed by the assembler during the compilation of the source program, they can complete functions such as processor selection, def

Explanation of transclude options and ng-transclude commands in angular. js commands, and angularjsng commands Preface Before starting this article, we must first describe that the angular version we use is 1.5.0, because different versions have different performance results. First, we should understand that one option in the angular command is transclude, which

Linux commands-ls commands and linux commands ls Today, we will introduce common commands in Linux. First, we will introduce the most frequently used commands in Linux-the ls command.For more information about Linux commands, see

Help commands for common linux commands and common linux commands 1.TypeThe difference between built-in and external commands 2.BashEnter bash to use help in bash. 3.Help lsLs is an external command, help can only view the built-in command methods, cd is a built-in command Ls -- helpAvailable 4.Man lsMan does not