5.2. Multilayer Switching
Multilayer switching is a relatively new technology that combines a router and a switch into one device, giving an administrator the best of both worlds. More and more enterprise networks are switching from routers in their core to multilayer switches. Multilayer switches offer a lower per-port cost than a typical router, while providing enhanced services, such as dynamic routing protocols and ACL support.
A multilayer switch can work in one of two ways:
It can be a chassis that has both switch and route processor cards.
It can be workgroup-style switch that has a CPU, or multiple CPUs, dedicated to routing, as well as an Application Specific Integrated Circuit (ASIC) for the switching fabric.
Multilayer switching provides ...
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