Introducing Campus Networks参考.ppt

Network Requirements Introducing Campus Networks Cisco Enterprise Architecture Nonhierarchical Network Devices Layer 2 Switching Layer 3 Routing Multilayer Switching Issues with Multilayer Switchesin a Nonhierarchical Network Hierarchical Campus Model ECNM Functional Areas Enterprise Composite Network Model Modules in the Enterprise Campus Campus Infrastructure Module Switch Configuration Interfaces Two interfaces are used to configure Cisco Catalyst switches: Cisco Catalyst software Cisco IOS Cisco Catalyst software was traditionally used to configure Layer 2 parameters on the modular switches: Cisco Catalyst 4000, 5500, 6500 Series These switches now support Cisco IOS (native IOS) Cisco IOS software is standard for most other switches and for Layer 3 configuration on the modular switches. Cisco Catalyst Software Cisco Catalyst software is used to configure Layer 2 parameters. Cisco Catalyst software configuration commands are prefaced with the keyword set. Console(enable) set port enable 3/5 Layer 3 configuration is implemented on MSFC with the Cisco IOS interface. Some platforms can now use the Cisco IOS interface to configure both Layer 2 and Layer 3 (native IOS). Cisco IOS Interface On most Catalyst switches, Cisco IOS interface is standard for Layer 2 configuration Layer 3 configuration on multilayer switch Summary The SONA framework guides the evolution of the enterprise network toward IIN. Cisco enterprise architecture with a hierarchical network model facilitates the deployment of converged networks. Nonhierarchical network designs do not scale and do not provide the required security necessary in a modern topology. Layer 2 networks do not provide adequate security or hierarchical networking. Router-based networks provide greater security and hierarchical networking; however, they can introduce latency issues. Summary (Cont.) Multilayer switches combine both Layer 2 and Layer 3 functionality to support the modern campus network topology. Mult