Introduction to Networking
Modems
Routers
Firewalls
VPN
Switches
Wireless Access Points
Cabling
Clients, Devices and Servers
Defines Logical and Physical
VPN
Switches
Wireless Access Points
Cabling
Clients, Devices and Servers
Defines Logical and Physical
Understanding Broadband Technologies
Topics Covered
Basic Broadband Concepts
T1
Carrier Grade Ethernet
Point to Point Wireless
Wireless
DSL
Cable
Satellite
Class Notes
Introduction
8 Bits = 1 Byte
Synchronous means upload and download speed are the same
Asynchronous means upload and download speeds are different
Latency is the time it takes for bits to get from the sender to the receiver
Speed Tests -- WhatIsMyIp.com is a good speed test
Business Class service is better the Residential Service
Static vs. Dynamic IP
Blocking Ports/ Services -- Make sure your Internet based software will work with your ISP
SLA (Service Level Agreements) offer a guarantee of service
T1
SLA
1.5 Mbps synchronous
Can reach places other cannot
Carrier Class Ethernet
Numerous Speed Options
Synchronous
SLA
Point to Point Wireless
Point to Point
Synchronous
Can be good enough for real time communications
SLA?
Mom and Pop Shops
Wireless
3G, WiMax, 4G, Edge
Not point to point
Different services offer different things
Usage caps
DSL
Straight connection to central office
Asynchronous (756Kbps up)
Max tech standard at 12Mbps
Distance from CO matters
PPOE
Cable
MAC Address
Shared Trunk line
DOCIS 3.0 152 down, 108 up
FIOS
Fiber Optic
More stable the cable internet
Satellite
Hughes Net
Horrible Latency
Basic Broadband Concepts
T1
Carrier Grade Ethernet
Point to Point Wireless
Wireless
DSL
Cable
Satellite
Class Notes
Introduction
8 Bits = 1 Byte
Synchronous means upload and download speed are the same
Asynchronous means upload and download speeds are different
Latency is the time it takes for bits to get from the sender to the receiver
Speed Tests -- WhatIsMyIp.com is a good speed test
Business Class service is better the Residential Service
Static vs. Dynamic IP
Blocking Ports/ Services -- Make sure your Internet based software will work with your ISP
SLA (Service Level Agreements) offer a guarantee of service
T1
SLA
1.5 Mbps synchronous
Can reach places other cannot
Carrier Class Ethernet
Numerous Speed Options
Synchronous
SLA
Point to Point Wireless
Point to Point
Synchronous
Can be good enough for real time communications
SLA?
Mom and Pop Shops
Wireless
3G, WiMax, 4G, Edge
Not point to point
Different services offer different things
Usage caps
DSL
Straight connection to central office
Asynchronous (756Kbps up)
Max tech standard at 12Mbps
Distance from CO matters
PPOE
Cable
MAC Address
Shared Trunk line
DOCIS 3.0 152 down, 108 up
FIOS
Fiber Optic
More stable the cable internet
Satellite
Hughes Net
Horrible Latency
Network Cabling
Introduction
Cabling is very easy to do.
Types of Cables
Cat 3 is obsolete. Transmits data at 10Mbps.
Cat 5/Cat 5e is the current standard used for cabling
Cat 6 supports up to 10Gbps.
Twisted Pair - Shielding
Plenum is used for running cable in duct work.
Types of Jacks
RJ11 is used for telephones
RJ45 is used for Ethernet
Tools
Buy Good Tools
Scissors
Crimper
Punch Down Tool
Cable Tester
Toner
Making a Patch Cable
Orange/ White, Orange, Green/White, Blue, Blue/White, Green, Brown/ White, Brown
Keep twists as close to plug as possible
Punching down cable
A vs. B -- Use B
Punch Down Tool, 110 Blade
Running Cable
Most Runs Max 100 Meters, 330 Feet.
Don't Twist/ Kink Cut Cable
Fish Sticks are used for drop ceiling
Fish Tape used to run cable in walls
Dry Wall Saw is used to cut holes in drywall
Final Thoughts...
Neatness counts
Use a patch panel
All runs should be "home runs"
Cabling is very easy to do.
Types of Cables
Cat 3 is obsolete. Transmits data at 10Mbps.
Cat 5/Cat 5e is the current standard used for cabling
Cat 6 supports up to 10Gbps.
Twisted Pair - Shielding
Plenum is used for running cable in duct work.
Types of Jacks
RJ11 is used for telephones
RJ45 is used for Ethernet
Tools
Buy Good Tools
Scissors
Crimper
Punch Down Tool
Cable Tester
Toner
Making a Patch Cable
Orange/ White, Orange, Green/White, Blue, Blue/White, Green, Brown/ White, Brown
Keep twists as close to plug as possible
Punching down cable
A vs. B -- Use B
Punch Down Tool, 110 Blade
Running Cable
Most Runs Max 100 Meters, 330 Feet.
Don't Twist/ Kink Cut Cable
Fish Sticks are used for drop ceiling
Fish Tape used to run cable in walls
Dry Wall Saw is used to cut holes in drywall
Final Thoughts...
Neatness counts
Use a patch panel
All runs should be "home runs"
Physical Network Segmentation
Topics Covered
Demarc Points
MDF and IDF
DMZ
Class Notes
Demarc Points are where responsibility for the network transfers from one party to another
You can test at the Demarc to check determine who is responsible for network issues
Property Managers/ Owners many times do not maintain the network components that they are responsible for
MDF and IDF
MDF -- Main Distribution Facility -- is the main hub for all network and telephone connections for a business location
IDF -- Intermediate Distribution Facility -- For large locations IDF's are used to minimize the length of network runs
DMZ
DMZ -- DeMilitarized Zones -- are used to provide areas of the network that are less secure then others
Demarc Points
MDF and IDF
DMZ
Class Notes
Demarc Points are where responsibility for the network transfers from one party to another
You can test at the Demarc to check determine who is responsible for network issues
Property Managers/ Owners many times do not maintain the network components that they are responsible for
MDF and IDF
MDF -- Main Distribution Facility -- is the main hub for all network and telephone connections for a business location
IDF -- Intermediate Distribution Facility -- For large locations IDF's are used to minimize the length of network runs
DMZ
DMZ -- DeMilitarized Zones -- are used to provide areas of the network that are less secure then others
Understanding Switches
Topics Covered
Switches vs. Hubs
Managed vs. Unmanaged Switches
Speeds and Duplex
Quality of Service
Power Over Ethernet
VLAN
Spanning Tree Protocol
Class Notes
Basic Switch Concepts
A hub simply splits the Ethernet signal like a cable splitter
Broadcast storms happen when too many computers are trying to talk at once
Switches allow multiple computers to be able to talk at the same time.
Switches are OSI Model layer 2 devices and use network devices MAC Addresses for identification
Managed vs. Unmanaged Switches
Unmanaged switches are completely automatic
Managed switches can be configured
Speed
Speeds -- 10Mbps / 100Mbps / 1000Mbps
Full Duplex means a device can send and receive traffic at the same time
Half Duplex means a device can either receive or transmit traffic
Backplane determines how much total data a switch can handle
Trunk Connection allow multiple switches to be tied together
VLANs are separate LANs on the same switch
POE -- Power Over Ethernet allows you to power network devices using cat5 cable
QOS/ COS -- allows you to prioritize network packets so that real time communication is not interrupted by file transfers.
Spanning Tree Protocol is a networking protocol that helps prevent network loops
Switches vs. Hubs
Managed vs. Unmanaged Switches
Speeds and Duplex
Quality of Service
Power Over Ethernet
VLAN
Spanning Tree Protocol
Class Notes
Basic Switch Concepts
A hub simply splits the Ethernet signal like a cable splitter
Broadcast storms happen when too many computers are trying to talk at once
Switches allow multiple computers to be able to talk at the same time.
Switches are OSI Model layer 2 devices and use network devices MAC Addresses for identification
Managed vs. Unmanaged Switches
Unmanaged switches are completely automatic
Managed switches can be configured
Speed
Speeds -- 10Mbps / 100Mbps / 1000Mbps
Full Duplex means a device can send and receive traffic at the same time
Half Duplex means a device can either receive or transmit traffic
Backplane determines how much total data a switch can handle
Trunk Connection allow multiple switches to be tied together
VLANs are separate LANs on the same switch
POE -- Power Over Ethernet allows you to power network devices using cat5 cable
QOS/ COS -- allows you to prioritize network packets so that real time communication is not interrupted by file transfers.
Spanning Tree Protocol is a networking protocol that helps prevent network loops
