Author Archives: Humair
Perl – Initial Values and Context Based Evaluation
It’s important to remember that in Perl all scalar variables have an initial value of the null string, “”. You do not need to define a value for scalar variables unless you are using “strict” mode. Knowing this, what do … Continue reading
Creating a LAG between an ESXi vSwitch and a Physical Switch
In this lab I am going to create a LAG (Link Aggregation Group) between an ESXi vSwitch and a physical switch. You can use Cisco, Force10 Dell, Juniper, or any other manufacturer for the physical switch. Depending on the switch … Continue reading
Posted in Cisco, Force10 Networks, Labs, Networking, Technology, Virtualization and Cloud Computing, VMware
Tagged 802.3ad, 802.3ad link aggregation, Cisco, ESXi, ESXi 4.1, etherchannel, Failover, Force10 Dell, Force10 Networks, LAG, Link Aggregation Group, load balancing, NIC Teaming, physical switch, pNIC, port bundle, port channel, port group, Route Based on IP Hash, Route Based on the Originating Virtual Port ID, Use Explicit Failover Order, virtual machine, virtual port ID, virtual switch, VM, VM Network port group, VMkernel, vmNIC, vmware, VMware ESXi, vNIC, vSwitch
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Open Virtualization Format – VMs in transit
The Open Virtual Machine Format (OVF) describes a format for the packaging and distribution of virtual machines (VMs). It is touted as open, secure, and portable. OVF can be seen as a packaging format for software appliances. I see it … Continue reading
Posted in Applications, Labs, Networking, Technology, Tips & Tricks, Virtualization and Cloud Computing, VMware
Tagged ESX. VMware ESX, ESXi, ESXi Server, export OVF, export OVF package, Open Virtual Machine Format, OVF, OVF format, OVF specification, OVF Template, virtual appliance, virtual appliances, virtual machine, virtual machines, virtualization, VM, vms, vmware, VMware ESXi, VMware OVF Tool, VMware vCenter Converter, VMware vCenter Converter Standalone, VMware vSphere Client, vSphere, vSphere Client
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Screen Scraping with Perl to get the top 25 Websites and the Web Servers they use
This was a really fun little script I wrote that I thought I would share with everyone. I basically wrote a Perl script using the popular LWP Perl module to screen scrape and obtain the top 25 sites and the … Continue reading
Posted in Data Mining, Hacks, Perl, Programming Languages, Technology
Tagged alexa, alexa.com, bot, bots, download webpage, hack, hacking, HTTP, HTTP header, HTTP request, HTTP response, Library for WWW in Perl, libwww-perl, LWP, LWP::Simple, LWP::UserAgent, perl, screen scraping, script, scripts, server, Simple, top 25 websites, UserAgent, web server. web servers. automate
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Setup your Apple MacBook Pro with VMware ESXi on top of Fusion
I have been messing around with VMware ESXi on my Apple MacBook Pro laptop for a while now. Actually, I have installed ESXi on top of VMware Fusion. Further, I networked everything together so my Apple MacBook Pro can communicate … Continue reading
Posted in Networking, Technology, Virtualization and Cloud Computing, VMware
Tagged Apple MacBook Pro, ESXi, ESXi 4.1, virtual machine, VM, vmware, VMware ESXi, VMware Fusion, vSphere, vSphere Client
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How to Stack Dell Force10 S60 Switches
In this lab I use two Dell Force10 S60 switches [FTOS 8.3.3.4] to demonstrate how to stack two S60 switches together. By stacking the switches you can increase port density and manage the switches together as if it were one … Continue reading
Posted in Dell Force10, Force10 Networks, Labs, Networking
Tagged Dell Force10, Force10, Force10 24 Gigabit stack, Force10 24 Gigabit stack cable, Force10 Networks, Force10 S60, Force10 S60 Stack, Force10 S60 Stacking, Force10 S60 Switch, Force10 Stack, Force10 Stacking, Force10 Switch Stacking, FTOS, S60 Stack, S60 Stacking, S60 Switch
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Load Balancing with EIGRP
RIP, RIPv2, IGRP, EIGRP and OSPF are all routing protocols that support equal cost load balancing but IGRP and EIGRP can also support unequal cost load balancing. However, unlike IGRP, EIGRP supports VLSM (Variable Length Subnet Masking). Below I use … Continue reading
Perl – Get files and directories with the glob function
Recently, as part of a larger Perl application, I had to get all the files and sub-directories of the working directory. Using the built-in ‘glob’ function, I was able to quickly implement a subroutine to do this and also differentiate … Continue reading
Posted in Perl, Programming Languages
Tagged get directories, get files, get sub-directories, glob, glob function, perl, perl glob, perl glob function
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Setup Telnet Access on Cisco Switches
This quick lab assumes you already have an IP address for telnet assigned on the Cisco switch. Once that is setup and you are able to ping the IP address, you can setup telnet access on the Cisco switch with … Continue reading
Posted in Cisco, Labs, Networking
Tagged Cisco, router, setup telnet, telnet, telnet access
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