Apuntes

E LIMINAR PASS ENABLE (MANTENIENDO CONFIGURACION ) - CISCO 2960  Fuente: http://www.cahilig.net/2014/04/14/how-reset-cisco-2960-switch-password-without-losing-your-configuration To  reset  your  Cisco  2960  password , connect your console cable to the switch and open up your terminal emulator software, you can use minicom if you are using Linux. Please visit this  link  on how to  install  and configure minicom using in Fedora/Red Hat/ CentOS  and this  link  if you are using Debian/Ubuntu. Power on the switch while holding the mode button. Release the mode button after you see the screen below in your terminal emulator software. Boot Sector Filesystem (bs) installed, fsid: 2 Base ethernet MAC Address: 1c:1d:86:db:c8:80 Xmodem file system is available. The password-recovery mechanism is enabled. The system has been interrupted prior to initializing the flash filesystem. The following comma...

VirtualBox: Arrancar máquina virtual desde un USB   Muchos habrán pasado alguna vez por una situación en la que han tenido que iniciar un equipo mediante un USB, ya fuera para iniciar un Linux (Ubuntu, Linux Mint, etc) o algún programa de recuperación (como por ejemplo Acronis), pero no suele ser muy común querer arrancar una máquina virtual en VirtualBox desde un USB , dado que creando la máquina se tiene la opción de arrancar desde una ISO directamente. En mi caso, el otro día necesité arrancar una máquina virtual desde un USB, dado que tenía que probar la imágen que llevaba ese USB y no tenía la posibilidad ni el tiempo de copiar la imagen a mi equipo (pesaba casi 300Gb) ni podía descargarla por internet dado que se trataba de la imagen de un cliente. Así que mi opción más sencilla era crear una máquina virtual que iniciara desde el USB, o eso creía, porque no era tan sencillo como pensaba, dado que en VirtualBox la opción de iniciar desde USB no existe . Bueno,...

RESET FACTORY JUNIPER EX For Junos versions prior to 11.1, The recommendation is to use one of the following methods to return EX2200 to factory-defaults: Execute the following commands: lab@EX2200> request system configuration rescue delete lab@EX2200> start shell user root  Password: root@EX2200% cd /config root@EX2200% rm -rf juniper.conf* root@EX2200% cd /config/db/config root@EX2200% rm -rf juniper.conf.* root@EX2200% reboot

Auto Backup Cisco Router & Switch with Kron and FTP Server Posted by ethernuno on 05/04/2012 Automatic Backup Cisco Router & Switch with Kron and vsftpd FTP. Briefing: In Cisco routers or switches, Kron lets you schedule an automatic backup task to save your running-configs or startup-configs. Also useful to backup IOS images, boot from FTP, copy SDM/ASDM files, and more. In the first example ill configure kron to copy the running-config to startup-config, every Automatically. The second example ill configure kron to send backups of the running-config to vsftpd FTP server. Issues : In order to copy the running-config to startup-config we need to use write(wr) not “copy running-config startup-config”, this is because kron does not support interactive prompts and the “copy running-config startup-config” command requires interaction. It is important to remember this. Also, kron does not support configuration commands. As for sending files to v...

Reset a Cisco 2960 Switch To Factory Default Settings Flattening a switch before re-deployment is one of those simple tasks that I always find myself having lookup on the web, so I thought I’d save myself some time in future and document it here. Step 1. Connect up your console cable and power on the switch, whilst holding down the “mode” button: This interrupts the boot process before the Flash file system can initialize, and after a short while (continue holding the “mode” button) you will see the following prompt: Using driver version 1 for media type 1 Base ethernet MAC Address: 4c:30:2d:81:ef:80 Xmodem file system is available. The password-recovery mechanism is enabled. The system has been interrupted prior to initializing the flash filesystem. The following commands will initialize the flash filesystem, and finish loading the operating system software: flash_init boot switch: Step 2. Initialize the flash file system with the command : fl...

Install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x by Pradeep Kumar · Published April 11, 2016 · Updated April 11, 2016 Zabbix is a free and open source monitoring tool which is used to monitor and track the availability & performance of servers, network devices and other IT assets which are on network. Zabbix uses database like MySQL, MariaDB, Oracle and IBM DB2 to store its data. Zabbix web interface is written in PHP. Some of its key features are listed below : Monitor everything which is on network like Servers, applications, database instance and network devices. Zabbix provides Web based administration interface. Monitoring CPU utilization of a particular process or a group of process ( proc.cpu.util) Using low-level discovery rules, zabbix can discover Vmware hypervisor ( ESXI ) and Virtual machines. Zabbix also supports agentless monitoring Monitoring of database server...

RESTART PASSWORD ROOT UBUNTU By default the first user's account is an administrative account, so if the UI is prompting you for a password it's probably that person's user password. If the user doesn't remember their password you need to reset it. To do this you need to boot into recovery mode. Boot up the machine, and  after  the BIOS screen, hold down the left  Shift  key. You will then be prompted by a menu that looks something like this: I've noticed on some systems that timing when to hit the left  Shift  key can be tricky, sometimes I miss it and need to try it again. Hit the down arrow until you select the  2nd entry from the top  (the one with the  recovery mode in the description ) and then hit  Enter . Now you should see this menu: Using the arrow keys scroll down to  root  and then hit  Enter . You should now see a root prompt, something like this: root@ubuntu:~# At this stage you should...