Join Greg Sowell for an in-depth discussion in this video Hardware redundancy, part of Foundations of Networking: Network Media (WANs).
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- [Voiceover] Redundancy should always be considered…when designing switched networks.…Hardware redundancy can sometimes be as simple…as keeping a spare piece of gear on the shelf.…The average mean time between failure for a Cisco switch…is somewhere around 8,300 days, or almost 23 years.…In an average environment you are unlikely…to experience an out-and-out failure.…Often, depending on where in the network a switch is,…having a couple of hours of downtime every 20 years…is an acceptable risk.…
Simply keeping a good unit on the shelf is advisable.…Some environments are less tolerant of failure,…which means active redundancy is required.…Multiple switches can be employed…to connect devices redundantly.…Multiple switches together can be configured independently.…But some switches will be capable of stacking.…A stackable switch is one that can operate…as a standalone unit or it can also be configured…to have a single switch as the management interface…for multiple switches.…
A commonality amongst most stacked switches is…
He 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