Join Greg Sowell for an in-depth discussion in this video Leased lines, part of Networking Foundations: Network Media (WANs).
- [Voiceover] Integrated Services for Digital Network,…ISDN, was defined in 1988…as a set of comm standards that cover…parallel digital transmission of data,…voice, and video over the Public Switch Telephone Network.…This means services delivered over standard phone lines.…ISDN being designed for digital transmission…supports channels of 64kb per second.…This magic number was arrived at…due to the sampling rate of analog lines,…which is 8,000 samples per second…and 8b per sample.…
The 64K channels are referred to…as bearer, or B channels.…16K channels are also occasionally used for signaling…and are called data, or D channels.…ISDN is really just various combinations of these channels.…It can utilize channels for voice and data…on a single connection.…The two main access interfaces are…Basic Rate Interface and Primary Rate Interface.…The BRI interface was designed for home use.…
It consists of two B channels at 64K…and one data, or D channel at 16K.…Telcos found that they could reliably send about…160K of information.…
Author
Greg Sowell
Released
2/29/2016He discusses different WAN technologies and features such as speeds, spans, and price points—including inexpensive options such as VPN. He then covers switches (the devices that connect computers in your building) and routers (devices that control the transmission of network data). Along the way, Greg shows how to build private connections, implement free networking over the Internet, build switch networks, and overlay-routed networks. He'll also introduce different routing protocols, such as OPSF link-state routing and distance-vector routing with RIPv2, EIGRP, and BGP.
Note that this course maps to domains 1 and 2 of the Microsoft Technology Associate (MTA) Networking Fundamentals certification exam (98-366).
- Understanding the technology: from dial-up to VPNs
- Working with hubs, bridges, and switches
- Ensuring hardware redundancy
- Using switching types and MAC tables
- Preventing bridge loops with STP
- Routing with routing tables
- Using NAT
- Securing your switches and routers
- Setting up firewalls
- Working with different routing protocols: RIPv2, OSPF, EIGRP, and more
Skill Level Beginner
Duration
Views
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Introduction
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Welcome47s
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1. WAN Technologies
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Dial-up4m 34s
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DSL and ADSL3m 25s
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Cable and broadband3m 31s
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Leased lines4m 50s
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MPLS and VPLS2m 58s
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Tunnels and VPN5m 25s
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2. Switches
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Hubs, bridges, and switches2m 49s
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Backplane speed1m 33s
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Hardware redundancy3m 44s
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VLANs2m 27s
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Spanning-Tree Protocol (STP)7m 53s
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Security options4m 37s
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3. Routers
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Routing tables6m 24s
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Software routing in Windows3m 22s
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Basic router security5m 24s
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Firewalls and security zones2m 41s
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Firewall advanced features2m 54s
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4. Routing Protocols
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Distance vector4m 9s
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Link state4m 1s
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RIPv23m 11s
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OSPF5m 37s
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OSPF areas2m 56s
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EIGRP4m 14s
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BGP4m 23s
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Conclusion
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Next steps37s
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Video: Leased lines