iLO

• What is iLO?

iLO stands for Integrated Lights Out Remote Management
Almost all HP ProLiant servers from Generation 2 systems onwards have included the iLO management port as standard.

What does it do?
you can power the server down and watch it reboot, jump in and configure the BIOS should you need to; watch the OS load up (note iLO doesn't require an OS to be already installed)
mount your local desktop USB or DVD to the remote server
You can even have the server boot from an ISO image on the network

The optional iLO Advanced provides key-activated features that enable remote access to system console with full keyboard and mouse control during any server state
iLO Advanced also allows administrators to maintain system firmware or run diagnostics on remote servers from an image on a workstation floppy or CD drive or network web server

Benefits of using iLO.
Reduces travel and operational costs
Automates system support functions
Increases availability
Ensures reliable, efficient access and data security

The remote console performance of iLO 2 is amazing and is the equivalent of KVM over IP console switch performance
http://proliant.blogspot.com.tr/2006/11/ilo-management-tips-tricks.html

• HP Insight Remote Support

enables reactive and proactive remote support to improve the availability of supported servers, storage, networking and printers
HP Insight Remote Support enables enhanced delivery of your HP Warranty, HP Care Pack Service, or HP contractual support agreement.
https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=REMOTESUPPORT

.etl extension

• To open *.etl file, open Event Viewer, right-click Saved Logs,  click Open Saved Log, and then locate to the *.etl file. Another way is using command “tracerpt

https://social.technet.microsoft.com/Forums/windows/en-US/bbd398bd-aab4-4719-bc2a-9aa05c0057f3/how-do-i-read-the-windows-7-backup-log-file-etl?forum=w7itprogeneral

.cpl .msc extensions

• cpl stands for Control Panel Item

msc stands for Microsoft System Configuration
http://www.shortcutworld.com/en/win/Windows-Run-Commands.html

NUPKG

NUPKG files are used by NuGet, an extension for Microsoft Visual Studio that provides an interface for managing third-party libraries for NET projects
http://www.openthefile.net/extension/nupkg

VLAN

• A virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2)

To subdivide a network into virtual LANs, one configures a network switch or router
VLANs allow network administrators to group hosts together even if the hosts are not on the same network switch.
Without VLANs, grouping hosts according to their resource needs necessitates the labour of relocating nodes and/or rewiring data links.
https://en.wikipedia.org/wiki/Virtual_LAN

• A VLAN is a group of end stations with a common set of requirements, independent of physical location. VLANs have the same attributes as a physical LAN but allow you to group end stations even if they are not located physically on the same LAN segment

VLANs are usually associated with IP subnetworks. For example, all the end stations in a particular IP subnet belong to the same VLAN. Traffic between VLANs must be routed
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vlans.html

VLAN Explained

isolating departments via LAN, finance dept uses seperate LAN

hosts must be on different switches in order to seperate LANs

virtual LAN, VLAN is  a logical network, logical segmentation

multiple networks/LANs on the same physical network switch

traffic from VLAN1 is logically seperated from VLAN2 inside the same switch, isolated traffic

VLAN logical segmentation, not physical segmentation

deploying 2 different LANs is the same as deploying 2 different VLAN on the same hardware

VLAN reduce HW: router-on-a-stick

interVLAN traffic requires a router or Layer3 switch

VLAN1 as default VLAN

Layer2 frame header contains VLANID(tag)

VLAN ports

port VLAN ID (PVID)

access ports (hosts, single PVID)

trunk ports, connect to other trunk ports on VLAN ready devices like switches,access points

trunk ports can carry untagged traffics if desired, one VLANID should be assigned to untagged traffic 

At Layer2 each VLAN is seperate broadcast domain(VLANID in frame header)

At Layer3 each VLAN is assigned IP range.

firefox addon vs extension

Add-on: essentially anything that can be installed into the browser. This includes for example extensions, themes, plugins, dictionaries, language packs, search engines.

Extension: a package extending browser functionality, the extension format used by Firefox works in Gecko-based browsers only.

Plugin: means NPAPI plugins that are supported by all browsers but Internet Explorer (the latter uses the proprietary ActiveX technology instead).
http://stackoverflow.com/questions/7575658/firefox-add-on-vs-extensions-vs-plugins