Join Greg Sowell for an in-depth discussion in this video Backplane speed, part of Foundations of Networking: Network Media (WANs).
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- [Voiceover] Speeds and capabilities aren't simply measured…by what the switch's port will negotiate at.…Often a switch has internal limiting factors…due to the way it was designed.…A backplane in a chassis based switch…is a group of connectors that share a common bus.…When a module is inserted into a chassis,…the connectors on the back of the card…connect to the backplane.…Often there's a maximum throughput the backplane…can support when communicating between modules.…This is what's known as backplane speed.…
In some chassis that allow the supervisor to be replaced,…a newer model may increase the backplane speed.…A single switch's motherboard is often…referred to as a backplane as well.…Some switches oversubscribe the backplane.…Let's use a 24-port switch for our example.…If all ports run at 100 megabits and the switch…is using 100 megabits on all ports at the same time,…that would roughly be 2.4 gigabits inbound…and 2.4 gigabits outbound on ports.…
Taking this into account, you can now look…and see what the switch's backplane speed…
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