1. Networking Devices Hang Pham Jared Jelacich David Ramirez

2. What are Network Devices? A computer network is any set of computers or devices connected to each other A computer network is any set of computers or devices connected to each other Networks generally involve at least two devices capable of being networked with at least one usually being a computer. Networks generally involve at least two devices capable of being networked with at least one usually being a computer. Examples Internet wide area network: that is the largest to ever exist, or a small home wide area network: that is the largest to ever exist, or a small home wide area network wide area network local area network (LAN) with two computers connected with standard networking cables connecting to a network interface card in each computer. local area network (LAN) with two computers connected with standard networking cables connecting to a network interface card in each computer.local area networklocal area network

3. Modems and Routers Cable/DSL Modem Cable/DSL Modem Wireless Router Wireless Router

4. 8-Port Switch & Cat 5 Cable 8-Port Switch & Cat 5 Cable Network Interface Card (NIC) Network Interface Card (NIC)

5. Wireless Adapters PCI Adapter PC Card PCI Adapter PC Card Wireless USB Adapter Wireless USB Adapter

6. LAN – Wired Local Area Network DSL or Cable Modem Linksys 8-Port Switch Airlink Wireless Router Workstation 1Workstation 2Workstation 3Workstation 4 Workstation 5 Workstation 6 Workstation 7 Workstation 8

7. Major Brands of Products and Cost Brand: NETGEAR Brand: NETGEAR (Port Switch) (Port Switch) Price:$42.99 Nortel ENET SWITCH 470 Price:$1,976.27 Nortel ENET SWITCH 470 Price:$1,976.27 Brand: D-Link Systems Brand: D-Link SystemsD-Link SystemsD-Link Systems (Cable Modem) (Cable Modem) Price: $59.04 Motorola Price: $108 Motorola Price: $108 Motorola

8. Bridges, Network Segments, Data link layer and Switch's

9. A network bridge connects multiple network segments at the data link layer of the OSI model. Bridges are similar to repeaters or network hubs, devices that connect network segments at the physical layer, however a bridge works by using bridging where traffic from one network is managed rather than simply rebroadcast to adjacent network segments. A network bridge connects multiple network segments at the data link layer of the OSI model. Bridges are similar to repeaters or network hubs, devices that connect network segments at the physical layer, however a bridge works by using bridging where traffic from one network is managed rather than simply rebroadcast to adjacent network segments.

10. Linksy: home use, price range $40- Linksy: home use, price range $40-$200 Zyxel: company use, price range $100- $400 Zyxel: company use, price range $100- $400

11. A network segment is a portion of a computer network separated by a computer networking device, including: A network segment is a portion of a computer network separated by a computer networking device, including: Repeater or Ethernet hub Repeater or Ethernet hub Bridge or switch Bridge or switch Router Router

12. Hub and Router prices Hub and Router prices Chanel plus: $300-$500 Chanel plus: $300-$500 Nortel Hubs: $1,200- $3,000 Nortel Hubs: $1,200- $3,000

13. A switch is a networking device that performs transparent bridging at up to the speed of the hardware. Common hardware includes switches, which can connect at 10, 100, or 1000 megabits per second, at half or full duplex. Half duplex means that the device can only send or receive any given time, whereas full duplex can send and receive at the same time. The use of specially designed expansion also makes it possible to have large numbers of connections utilizing different mediums of networking, including Ethernet, Fibre Channel. A switch is a networking device that performs transparent bridging at up to the speed of the hardware. Common hardware includes switches, which can connect at 10, 100, or 1000 megabits per second, at half or full duplex. Half duplex means that the device can only send or receive any given time, whereas full duplex can send and receive at the same time. The use of specially designed expansion also makes it possible to have large numbers of connections utilizing different mediums of networking, including Ethernet, Fibre Channel.

14. Types of Switch's Non managed Non managed Managed Managed Smart / intelligent Smart / intelligent

15. Unmanaged switches have no configuration interface. They are typically found in SOHO environments Unmanaged switches have no configuration interface. They are typically found in SOHO environments Managed switches are found in medium/large network environments and come at a higher price and quality. The task of managing usually requires understanding of Layer 2 networks. Managed switches are found in medium/large network environments and come at a higher price and quality. The task of managing usually requires understanding of Layer 2 networks. Smart (or intelligent) switches are usually managed switches with a limited set of features. Smart (or intelligent) switches are usually managed switches with a limited set of features.

16. Switch Prices Linksy: $20-$60 Linksy: $20-$60 Cisco: $200-$400 Cisco: $200-$400 Netgear:$40-$75 Netgear:$40-$75

18. The main reason for purchasing hubs rather than switches was the price. However this has changed as the prices of switches has decreased. Hubs can still be useful in special circumstances: Connecting a protocol analyzer to a hub allows it to see all the traffic on the segment. Computer clusters require all the computers to receive all the traffic going to the cluster. A hub with a 10BASE2 port is probably the most inexpensive way to connect devices that only support 10BASE2

19. Home Users Small Business users Netgear DS100 10/100 Mbps Dual Speed Hub $69.00 3Com OfficeConnect Ethernet Hub $58.74 Netgear EN104TP 4 Port 10BASE-T 10 Mbps Hub $21.00 3Com Home Connect Home Network 10 Mbps Ethernet Hub $15.00

20. An Ethernet hub is a device for connecting multiple devices together, making them act as a single segment. The device is a form of mulitport repeater. Ethernet hubs are also responsible for forwarding a jam signal to all ports if it detects a collision. A jam signal is a signal that carries a bit pattern sent by a data station to inform the other stations that they must not transmit.

21. Home UsersSmall Business users Netgear DS100 10/100 Mbps Dual Speed Hub $69.00 3Com OfficeConnect Ethernet Hub $58.74 Netgear EN104TP 4 Port 10BASE-T 10 Mbps Hub $21.00 3Com Home Connect Home Network 10 Mbps Ethernet Hub $15.00

22. Questions?