How to install a vro

We often discuss how to install routers. Today, starting with basic configurations and Common commands, after learning about these basic knowledge, you can easily solve the problem of how to install the vro.

1. How to install a vro external configuration Device

When configuring a vro, you can connect a terminal to the Console on the vro Console or the Auxiliary Port AUX, you can also use local or remote devices connected over Ethernet or wide-area networks to configure through Telnet virtual terminals, TFTP servers, or network management workstations. The terminal is set to 9600bps, 8 Data Bit, No Parity, and 1 Stop Bit. The configuration part of the vro.

ROM includes power-on self-check, boot program and operating system software. If you want to upgrade the software on ROM, you need to replace the plug-in chip on the motherboard; RAM/DRAM storage route Table, Access Table, ARP Cache, fast Cache switching, and RAM also provide temporary and running memory for the vro configuration file; NVRAM is a non-loss RAM storage vro configuration file, which still exists when the vro is powered off; FLASH erasable, programmable ROM, storage operating system IOS and code, can be upgraded without replacing the chip on the motherboard, still exist after power-off; the Interface Information Package enters the network interface of the router.

Ii. How to install a vro: vro Mode
◆ User EXECm mode-limited inspection on vrouters and remote access
◆ Router>?
◆ Privileged EXEC mode-detailed inspection and testing, file processing, and remote access can be performed on the vro.
◆ Router #
◆ General configuration mode-simple configuration commands
◆ Routerconfig )#
◆? SETUP mode -- used for initial configuration

Iii. How to install a vro: Check the status of the vro
◆ Run the following command to check the status of the vro:
◆ Show version system hardware configuration, software version, Boot Image
◆ Show process: displays information about activated processes.
◆ Show protocols: displays the configured Protocol
◆ Show memory Display memory statistics
◆ Show stacks monitoring process usage information
◆ Show buffers: displays the buffer information on the network server
◆ Show flash display FLASH device information
◆ Show term: displays the backup configuration file
◆ Show config: displays the interface information configured for all Routers
◆ Show line: displays the line information configured for all Routers

Iv. Initial Sequence of router startup

When installing a vro, The vro performs the following operations:
◆ Perform power-on self-check from ROM to detect basic operations of CPU, memory, and interface circuit.
◆ Boot from ROM and install and download the operating system to the primary storage.
◆ When the boot operating system is pre-determined by the configuration register boot from FLASH or the network, the boot system command of the configuration file determines its exact location.
◆ The operating system is downloaded to the low-address memory. After the download, the operating system determines the working hardware and software of the router and displays the result on the screen.
◆ The configuration files stored in NVRAM are loaded to the main memory and executed. The configuration starts the routing process and provides the interface address and setting media features.
◆ Then enter the system configuration session to display the configuration information, such as the configuration information of each interface.

5. How to install a vro: Setup session

When there is no valid configuration file in NVRAM, The vro automatically enters the Setup session mode. You can also enter Setup in the command line for configuration. The Setup command is an interactive command. Each question has a default configuration. If you use the default configuration, press Enter. If the system has already been configured, the current configuration value is displayed. If this is the first configuration, the factory settings are displayed. When "More ------" is displayed, type the Space key to continue. If you exit from Setup, type Ctrl-C.

Main Parameters of Setup:
◆ Configure its general parameters, including:
◆ Host Name: hostname
◆ Privileged password: enable password
◆ Virtual terminal password: virtual terminal password
◆ SNMP Network Management: SNMP Network Management
◆ IP: IP
◆ IGRP Routing Protocol: IGRP Routing
◆ RIP route protocol: RIP Routing
◆ DECnet: DECnet.
◆ Set the secret and password of the Console:
◆ Enable secret <string>
◆ Enable password <string>
◆ Password settings for Virtual Terminor:
◆ Line vty <number>
◆ Password <string>
◆ Host name settings:
◆ Hostname <string>