Category Archives: Networking HP

Top 10 Password Cracking Tools for Windows, Linux and Web Applications

A simple details about password cracking tools from wiki. In cryptanalysis and computer security, password cracking is the process of recovering passwords from data that have been stored in or transmitted by a computer system. A common approach (brute-force attack) is to try guesses repeatedly for the password and check them against an available cryptographic hash of the password.… Read More »

Hpe Procurve Port Mirroring Warning

There’s a bit of unexpected behaviour on ProCurve switches when configuring port mirroring if you come from a Cisco background. Ports that are configured as a destination for port mirroring are still actively participating in their configured broadcast domain(s). I have witnessed the most severe possible consequence in the form of a bridging loop on two core switches.… Read More »

Configure Windows 2012 R2 NTP Server

‘Windows Time’ is a built-in time synchronization service in Microsoft Windows Server Operating System. Its first release was in Microsoft Windows Server 2000. Today we will show you how to configure the latest Microsoft Windows Server 2012R2 time service. This instruction shows how to modify registry entries to configure the Microsoft Windows Time Service to allow a Windows… Read More »

Trunking Switch Cisco 3750 vs HP 5130

For Switch Cisco ——Cisco C3750X——- ! interface Port-channe4 description EtherChannel connected to HP-5310 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk native vlan 100 ! interface GigabitEthernet1/1/1 description EtherChannel connected to HP-5310 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk native vlan 100 channel-group 4 mode active ! interface GigabitEthernet2/1/1 description EtherChannel connected to HP-5310 switchport… Read More »

Manage User Accounts and Passwords in Cisco IOS Devices

Managing user Accounts and passwords in Cisco IOS Devices is very important task. With several different user accounts, you can also set different privilege level for each one of them. Different privilege means different available commands that can be executed per user account. In this article, we will go deep on creating users accounts and all its features… Read More »

Understanding VLAN Trunking Protocol (VTP) in Cisco Switch

VLAN Trunking Protocol (VTP) is used to synchronize VLAN creation between the switches in the network. Imagine you have dozens, if not hundreds of switches in your network. You have to log into each switch and manually create VLANs. This does not sound practical, does it? Using VTP protocol, you can manually create VLANs in one switch and… Read More »

How to Backup Cisco Router Configuration to TFTP Server & Schedule Automatic Backup of Cisco Router

Well, we were discussing Cisco device administration guides so far. Cisco backup is vital, whether it is IOS or running-config, in your Network Administration career. Cisco router backup running config is much important while comparing to Cisco IOS software backup since you can get new IOS but won’t be able to get configurations!. Running configuration is unique and… Read More »


HP 1920 48G (JG927A) SWITCH CLI ADMIN PASSWORD I was disappointed with the CLI features available on my HP 1920 48G switch, then I found out it had a super-secret CLI. To be fair I was disappointed with this too, but it’s better than nothing. The features of this range of switches are meant to be managed through… Read More »


CONFIGURING 2 HP 1920 SWITCHES Login authentication Username: admin Password: <HP 1920G Switch> _cmdline-mode on All commands can be displayed and executed. Continue? [Y/N] Y ↓↓↓↓↓↓↓↓ Default password is below, ↓↓↓↓↓↓↓↓ Please input password: Jinhua1920unauthorized y wrong use, please carefully use it with our engineer’s direction. ****************************************************************************** * Copyright (c) 2010-2015 Hewlett-Packard Development Company, L.P. * * Without… Read More »


Connecting the Switch to a Network To enable remote management of the switch through a web browser, the switch must be connected to the network. The switch is preconfigured with an IP address for management purposes. After initial configuration, the switch can also be configured to acquire its address from a DHCP server on the network. By default,… Read More »

HP V1910 – How to Enable Full Command Line Access for SSH or Telnet Management

The HP V1910 switches are powerful and economical switches. By default, you can only manage them through the web interface. Even if you enable SSH or Telnet, the commands available are minimal. Here is how to configure SSH or Telnet, enable it for your user account, and enable the full range of commands that are disabled by default.… Read More »

VLAN Trunk Between Cisco and HP Procurve switch

In this example we are going to see how we can use Cisco and HP switches together for Vlan trunking. Before we get into details, let me describe the difference in ‘terms‘ using both in Cisco and HP. Description Cisco ProCurve A port that belongs to a unique VLAN Access mode Untagged A port carries multiple VLANs using… Read More »