cisco 1921 router

Cisco router configuration mode In general, you can configure your router in 5 ways: 1.Console Port connection terminal or running terminal simulation software of the microcomputer; 2.AUX Port Connect modem, connect with remote terminal or computer running terminal simulation software by telephone line; 3. Via the TFTP server on the Ethernet; 4. Adoption of

For enterprise users, multi-device port access control can optimize the network more reasonably. Here we analyze in detail how to configure a Cisco router to implement this function. You only need a CISCO router with an asynchronous module or a router with a built-in asynchr

The importance of vro configuration is self-evident. Here we mainly analyze the Cisco router configuration statements in detail, and share them with you here, hoping to help you. Introduction to Cisco router configuration Cisco ios operating environment. ROM monitor>

Implementation of VPN on a Cisco router: 1. software requirements: IOS with performaniseplusistmc56 is required. Currently, stable versions are 12.07T2. Hardware requirements: 8 mbflashand40mbram in DownloadIOS, the software and hardware requirements of the downloaded IOS version are prompted. 3. IPSec manual method considerations Implementation of VPN on a Cisco

China Mobile's GPRS network uses the APN method to connect to the GPRS device terminal and communicate with the server through the APN. The customer purchased the Cisco 2811 router, and the mobile company needed to pull the optical fiber through the E1 port, I spent more than 1000 RMB with an E1 module. mobile companies are doing very poorly, and optical fiber connectors are not provided at all. I also boug

For Cisco router authentication, when performing the cisco Route Selection protocol (r12002; VPN) authentication, the key is irrelevant to the key ID when using plain text (General authentication, during MD5 authentication, the key and key ID are related, that is, the key IDs and keys at both ends must be the same, for example, R1 (config) # key chain key1 R1 (co

For many beginners, using cisco rommon to maintain a vro, the ROM Monitor of a cisco router is often unfamiliar or even daunting. The reason is simple. First, we do not often use this mode, I am not familiar with the related operations. Second, Operation errors in ROM Monitor mode often cause fatal damage to the vro (such as destroying the IOS file in flash, lead

The command line port of a cisco router uses a hierarchical structure, which requires logging on to different modes to complete detailed configuration tasks. From a security perspective, cisco IOS divides EXEC sessions into USER mode and privileged mode. Features of the USER mode: In USER mode, only basic monitoring commands are allowed. In this mode, the confi

How to Set Up r12002 routing protocol for Cisco router 3620 to demonstrate how to set up r12002 routing protocol for Cisco router 3620 this time, we need to build a complex network experimental environment, this environment is also the experimental environment used later to learn about other

This test configures remote management of routers and switches within the LAN, routers for Cisco 2621XM, switches for Cisco 2960Switch configuration:Switch>enaSwitch#confSwitch#configure TSwitch (config) #interface vlan 1Switch (config-if) #ip address 192.168.2.10 255.255.255.0Switch (config-if) #exitSwitch (config) #ip Default-gateway 192.168.2.100Switch (config) #enable secret 123Switch (config) #line vty

access vlan 4 Switch (config-if) # no shutdown Switch (config-if) # exit Switch (config) # interface f0/3 Switch (config-if) # switchport mode trunk sets this port to relay mode) Switch (config-if) # no shutdown Witch (config-if) # exit. You can directly use ctrl + z or end to exit the privileged mode) 2. Configure single-arm routing on vrocisco Cisco 2611) Router # con

There are many things worth learning about the configuration mode of a Cisco router. Here we mainly introduce the mode of user execution and privilege of a Cisco router. Ping is the most commonly used troubleshooting command. It consists of a group of ICMP response request packets. If the network runs normally, a group

Basic configurations of Cisco routers and switches: www.2cto.com Router> \ enter the user mode Router when the vro is started> enable \ type the command to enter the Router mode # \ This display mode indicates that the Router mode has been entered # configure terminal \ type

Cisco router Startup ProcessThe Startup Process of a Cisco router is divided into four main stages: 1. execute POST 2. load the bootstrap program 3. search for and load Cisco IOS software 4. find and load the startup configuration file, or enter the setup Mode 1. executing P

When we want to perform permission rating management on a Cisco router or switch, it is often necessary to assign different levels of users a command that exceeds the default settings, such as show run, which is the most basic troubleshooting command.However, the command cannot be executed when your user level is at 0-14. You can assign permissions to these users using the following command:Privilege EXEC l

Assume that two Cisco routers and R1 (server) connect to R2 (client) to form a simple chained lan. DHCP is implemented below. The configuration commands and explanations are as follows: 1. Configure the R1 dhcp Service Dhcp # configure terminal // Enter global Mode Dhcp (config) # service dhcp // Enable the dhcp Function Dhcp (config) # no ip dhcp conflictlogging // Disable dhcp logging Dhcp (config) # ip dhcp pool

Before giving you a detailed introduction to the Cisco router ACL, first let everyone know about the ACL, and then give a full introduction to the mask to block the scam attack. Wildcard-mask wildcard mask in the Cisco router ACL Access Control List ). Brief: The wildcard mask (or anti-mask) used in the

successfully and you can view your saved files on the TFTP server.4. Restore your configuration file, ping the TFTP server, keep the connection, download from TFTP to the routerCopy tftp running-config Download the previously configured backup from TFTP and restore the router's configuration fileIP address of the 192.168.1.1 TFTP serverRUNNING-CONFIG-BK you want to restore the backed up files in TFTPRunning-config a name for your recovered files.Final reload, successful restart, successful reco

Use the home ADSL line and use the CISCO router to build the PPPoe Server so that the PC can access www.2cto.com R1 (config-if) # do sh runBuilding configuration... Current configuration: 1470 bytes! Version 12.4 service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption! Hostname R1! Boot-start-markerboot-end-marker !! No aaa new-modelmemory-size iomem 5 !! Ip

You can configure a serial interface through a virtual terminal. to configure a serial interface, follow these steps: 1. In Global mode, enter the command "interface serial 0" to enter the serial interface configuration mode. 2. Each connected serial interface must have an IP address and subnet mask to forward IP packets, in interface configuration mode, enter the "ip address 3. If the serial interface is connected to a DCE device, we also need to configure a clock frequency for the serial inte