Metropolitan Area Networks, Detail

Metropolitan Area Networks (MANs) are high speed private networks which are created by one or more dedicated point to point links between multiple locations. Each location normally has its own LAN and some level of routing will have to be done between the MAN and disparate LANs so that the two networks can communicate and share information. MANs can be created via the use of a public switched network, private fiber network or one or more point to point wireless links. As an example lets take a large University with a campus spanning several square miles and multiple buildings that wants a centrally managed IP Video Surveillance network. Well a MAN would be set in place to connect each of the buildings across the campus to a central location where the NVR and storage array are installed. The high speed of the MAN will allow the IP video to be quickly transported to the central location and recorded as if the remote cameras were on the same LAN as the NVR. If that does not make sense here is a diagram...

Multi-building ip video surveillance network connected via a MAN

As you can probably guess the Wide Area Network (WAN) connects two or more LANs that can be located large distances from one another, even across the globe. A WAN can be your Internet connection or it can be a "private" point to point (no internet) frame relay, managed layer 2 or MPLS connection you get from your internet service provider (ISP). Traditionally WANs are public switched circuits like DSL, Cable, T1s, T3s and OC3 to OC192.

Circuit Speeds:

* T1: 1.5Mbps
* T3/DS3: 45Mbps
* OC3 (Optical Carrier 3): 155Mbps
* OC12: 622Mbps
* OC48: 2.488Gbps
* OC192: 9.6Gbps

These are still the most prevalent WAN connections but the problem is they become very expensive very fast and when dealing with video surveillance we all know that bandwidth is our major concern. Well, today ISPs are combining MANs and WANs to create Metro Ethernet offerings that provide you with a high speed Ethernet handoff that plugs directly into your firewall or layer 3 switch instead of a router which means a much lower monthly costs and MUCH lower hardware costs.

Metropolitan Area Networking (MAN)
Is a network that connects computers in a building that brdekatan / still in the city or province.
Benefits:
. The network is also often called an intranet.
. The software and hardw · are used very specific.

Next More Computer Networks > >>

• WLAN - Wireless Local Area Network
• WAN - Wide Area Network
• LAN - Local Area Network
• MAN - Metropolitan Area Network
• MAN - Metropolitan Area Network
• SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network
• CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network
• PAN - Personal Area Network
• DAN - Desk Area Network