Download Equipment: IP Networking Tech Gear

Equipment: IP Networking Tech Gear
2:30pm – 3:30pm
Presenter:
Jeff Hartman
What we are covering today…
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Components of a Network
Configuring Network Settings
Useful Tools for Troubleshooting
Effectively Communicating with IT People
Public vs. Private Connections
• Public is directly connected to the internet.
– WAN or Wide Area Network. The internet is a WAN
• Private is indirectly connected to the internet if
connected at all.
– LAN or Local Area Network. Your home or office
network
• These are not to be confused for the Public and
Private Wireless Networks, which are both Private
Connections.
Wired vs. Wireless
• Wired uses copper or fiber cables to connect
devices
e.g. Ethernet CAT 5/6 cables, RJ45 (8P8C) connectors,
single mode or multimode fiber with various connectors
like LC, SC, ST, etc…
• Wireless uses radio frequencies
e.g. Wi-Fi, 802.11b, 802.11g, 802.11n, 802.11ac
The IP Network
• MAC Address – Unique identifier like DNA for
each network device.
e.g. 40E230FC439F, 40-E2-30-FC-43-9F,
40:E2:30:FC:43:9F
The Human Network
Components of a Network
• Client
– user of the network
e.g. Computer, tablet, smartphone, printer
A Simple network could consist of just 2 computers
connected via a crossover cable.
Components of a Network
• Network Switch
– Has a number of ports to attach devices to
– Passes data from one device to another
Components of a Network
• Wireless Access Point
– A device that connects clients to the network
without wires
– Usually connects to a Network Switch with a wire
Components of a Network
• Router or Gateway
– Sends network traffic from one network to
another
e.g. Visiting a webpage, Router sends church
LAN computer request to a specific webpage on
the internet.
Components of a Network
• Firewall
– Blocks or Allows traffic from the internet to enter
a LAN.
Components of a Network
• Servers
– DHCP – Hands out Network settings to devices
– Mail – sends and receives email
– File – Stores and retrieves files
– DNS – a directory that matches domain names to
IP addresses
Components of a Network
• Tech Devices
– Anything other that a computer that connects to
a network.
e.g. video switchers, audio consoles, projectors
Configuring Network Settings
• IP Address
– Unique on a given network
– Assigned to each device on the network
– Looks like 192.168.1.50 or 10.10.10.10
Configuring Network Settings
• Subnet Mask Address
– Divides IP address (192.168.1.50) into 2 numbers,
eg. Network ID (192.168.1) and Host ID (50)
– Tells devices which numbers to care about
– Same for every device on a network
– Always starts with 255
– Looks like 255.255.255.0 or 255.255.248.0
Configuring Network Settings
• Router/Gateway Address
– The IP address of the router on your network
– Allows your device to leave your LAN
– Same for each device on your LAN
– Looks like 192.168.1.1 or 10.0.1.1
Configuring Network Settings
• DNS (Domain Name Server)
– The IP address of the DNS you want to use
– Like a phone book for websites
– Usually the same for each device on your LAN
– Looks like 8.8.8.8 or 8.8.4.4
Configuring Network Settings
• DHCP
– The ‘Easy’ button for network settings
– Configures your network settings for you
Useful Tools for Troubleshooting
• Laptop
– Can check cables, switch ports, and vlans
– Can use ipconfig to check settings
– Can ping other devices
– Can traceroute to a device
Useful Tools for Troubleshooting
• Crossover Cable
– For connecting one device directly to another
without a switch
– Useful for initial configurations
Useful Tools for Troubleshooting
• Long Data Cable
– Physically move a piece of gear further away
– Connect to a different switch
– Use your laptop to configure a piece of gear
closer to it, eg. projector
Useful Tools for Troubleshooting
• Software Scanner App
– Scans a network to see what IP addresses are in
use, what mac addresses are associated with
what IP address and more
– Pings a range of IP addresses
– Use on smartphone, tablet, or laptop
– I use iNet but there are other good ones too
Useful Tools for Troubleshooting
• Fluke Intellitone 250
– Sniffer for tracing a data cable
– Wiremapper for testing ethernet pinouts
Useful Tools for Troubleshooting
• Fluke Linkrunner AT 2000
– Can also wiremap and sniff
– Can trace a cable back to a specific switch and
port and vlan
– Verifies network speed 10/100/1000
Useful Tools for Troubleshooting
• Prayer
– God knows the answer
Effectively Communicating with IT people
• Know what you need before you ask
– Troubleshoot, reboot, check for air gaps and for
goodness sake ping something
– IT personnel are either busy or expensive
Effectively Communicating with IT people
• Communicate specifically what you need
them to do
• Communicate the significance of what you
are doing
• Communicate a deadline
• Be nice
Questions?