Could not find filesystem ‘/dev/root’ at boot? Today I ran into a problem where after renaming the root (/) logical Volume and rebooted I got the following message on boot: could not find filesystem ‘/dev/root’ I had renamed the LV…
In order to understand more complex network technologies it is important to have a strong understanding of the basics. So here we are Layer 1 – Ethernet, the most commonly used access medium for LAN network. An Ethernet cable consists…
When plugging a workstation, server or PC directly behind a Cisco router, you might notice that you may experience speed problems. Why am I not able to get the full 100Mbps speed? I had run into this problem while deploying…
How do you clear cisco interface configuration? Using the “no” command on each line to remove the configuration can be tedious and cumbersome. Use the default command in global configuration mode to clear the interface configuration and restore the interface…
Cisco EzVPN – EASY VPN A Cisco EZVPN client is basically hardware VPN client that is always ON. It helps simplify deployment of branch locations where their public IP is handed out by a DHCP server and constantly changes. Today…
Problem: How do you clear CLI screen on ASA? Solution: Answer: You CAN’T! In case you came here asking for the clear CLI screen on IOS. Answer: You CAN’T! SecureCRT I wished there was a way to clear the CLI…
Today I ran into a strange problem where I was getting a “ssh connection refused” message from putty while connecting to a Linux server via SSH. I was able to connect to the server just the day before and was…
During an event where a shutdown of the Hitachi Metrocluster is neccessary (ie. migration of storage cluster, power outage event where backup power is not available) a graceful shutdown of the Cluster is necessary in order to avoid a Raid…
Ever had a Cisco IP phone stuck in configuring ip? Suspecting that there is something wrong with the phone? Don’t throw it away yet! Try doing a factory reset on your phone! Unplug the power cable from the phone, and…
Problem: Have you ever had the need to VPN home from your iOS compatible device such as an iPhone or iPad? By using SSH tunneling, there’s no need to setup a complex IPSEC VPN or PPTP server at home. Just…