Networking

And other geeky things you never thought you’d learn

Job Description: Even though Salary was “unspecified” it pays over 400 grand per year!!!

Responsibilities

* Serve as member of the Global Network Team for Genworth Financial, a global business with more than 5,000 employees worldwide.

Perform LAN/WAN Hardware Installation, configuration and Management; The equipment includes Cisco routers, Cisco PIX, Nokia Checkpoints, Cisco switches, Big IP F5s, 3DNS F5, Cisco VPN devices and other networking gear.

* Act as primary network technical specialist supporting the separation of the network between GE and Genworth.

* Integrate Europe and Australia into the Genworth core network.

* Technical leader for BGP and EIGRP routing protocols and installation.

* Responsible for technical support and maintenance of Genworth Financial LAN/WAN, including capacity planning, tuning, router configurations, and troubleshooting the network and related devices.

* Evaluate network capacity and make upgrade recommendation in alignment with GNW strategies.

* Comply with change control processes.

APPLICATION

• Word Processing

• Graphics

• Spread Sheets

• Communications ( E-mail, Internet)

• Databases

• Games

• Each has its own format (i.e. Mp3, .doc, .xls)

Presentation

• “On the way down” changes data from application info to NETWORK info.

• This allows for independence from conflicts in different data presentations

• It also “encrypts” the data for travel over a network

• Unencrypted Data is called “Plain Text”

Session

• The Three Way Handshake

• “The Phone Call” of Networking

• Think of your old Dial Up Access

• If Dial Up is still new to you, think of the old operators

• Also terminates session

Transport/Transfer• TCP ( Transmission Control Protocol)

• Sliding Window

• How Big of “Bytes” to take

• The firehose and the drinking fountain

• “X-on X-off ”

• Buffer ( Wax on Wax off?)

• Show me the T3 !!!

• Error recovery

Network

• Here’s where Cisco makes the money!

• Switching and Routing and Packets OH MY!

• Forwarding and Hops

• LAN’s, WAN’s and Wi-Fi ( no Ron, not Hi-Fi)

• IP address more on this later !

Data-Link Layer• Device Permission to receive data (MAC number) and send it

• error checking

• Flow control…..the long and painful phone conversation

• FRAMES

Physical

• The Hardware

• 0’s and 1’s

• Electric Light Orchestra

Terms to know• Static IP

• Dynamic IP

• VPN ( virtual private network )

• Subnetting

• Ports

• VOIP ( Voice over IP )

• Ethernet

• Cat 5

MORE terms to know

• Digital

• Analog ( almost outdated )

• Switch

• Router

• Fiber (Not a Bran Muffin)

• Ports

Cutting Edge• SIP Phones ( Session Initiated Protocol)

• Digital Guitar

• PVR’s ( a video iPod?)

• Household Gadget IP’s

• Are you kidding me?

• Windows with a twist!

• Smart Rooms !

• CSI in real life!

It Takes Two

• Let’s stop and look at Binary Octets( A great name for a retro punk band don’t you think?)

IP- Therefore I AM

150.215.17.9 10010110.11010111.00010001.00001001

150.215.0.0 = The network name 10010110.11010111.00000000.00000000150.215.255.255= the “Broadcasting

Network” 10010110.11010111.11111111.11111111

Subnetting for “Cheaters”

• “Borrowing” Bits

10010110.11010111.00000000.00000000 network Users

10010110.11010111.00000000.00000000 borrowIP=150.215.0.0Subnet= 255.255.240.0

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