Networking BasicsRyan Jones

What is a network?• A system of connecting computers

together• Allows sharing of resources:– Internet connections– Data storage– Printers and scanners– Computer resources

Basic network

Basic wireless network

Modem• Connects to the

internet on your behalf

• Can be connected to one computer, or a router to share the connection

• Specific to your internet connection, e.g. ADSL, NBN etc

Router• Connects to the

modem• Shares the internet

connection to multiple devices

• E.g. Cisco 890 Series

BUT WAIT!• Consumer grade

ADSL modems are often routers and wireless access points

• These are fine for small organisations

Switch• Allows you to network

multiple devices• Can be connected

together• Available in different

speeds – Gigabit is faster• Available in multiple

sizes, e.g. 8 port, 24 port, 48 port

E.g.• Cisco 2960 Series• D-Link DGS Series

Network card• Allows your computer

to access a network• Not usually required

for laptops• Good for older

computers:– Increase network

speed– Allow old desktops to

connect to wireless networks

Wireless Access Point• Connects to your

router to provide wireless access

• Available in a range of speeds

• E.g.– Cisco Aironet range– D-Link AirPremier

How do I know what I need?• Check what networks your

computers support–What wireless standards?802.11a/b/g/n?–What wired standards? i.e. 10/100?

Gigabit?• How many computers are connecting

to your network?

What wireless access point do I need?• Check what your

computers support– 802.11b – 11 Mbps– 802.11a – 54 Mbps– 802.11g – 54 Mbps– 802.11n – 300 Mbps– 802.11ac – 1300

Mbps

What switch do I need?• You need one port

per computer you’re connecting

• They can be networked together to add more ports

More complex networks• More users = more

complexity• Multiple wireless

access points• External antennas

for wireless• Adaptive Security

Applicances (ASA)

Network Storage (NAS)• Network file

storage• Can hold multiple

hard drives• Data protection

through RAID• Perfect for file

sharing or network backups

Print Server• Allows sharing

printers over a network

• Converts USB printers to network connected

• Supports scanning and fax

• Wireless also available

What can I get through Connecting Up?Cisco Donation Program

• Wireless Access Points• Switches• Internet Security

Appliances (ASA)• Network cards• Routers• Accessories

D-Link Discount Program

• Wireless Access Points• Switches• Network cards• Surveillance equipment• Network storage• Routers• Firewalls

Questions