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Another thing to pay attention to is the vlan database on switches. Changing configs doesn't delete previously configured.
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Another thing to pay attention to is the vlan database on switches. Changing configs doesn't delete previously configured.

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I'm creating a Cisco home lab and I'm wanting to know if I can save the startup configs for numerous different labs on the switches and then go from one config to another for when I go to a different lab. For example, lets say I want to set up the switches for a port-channel lab and wanted to save the config, then I set up the switches for a vlan lab and then set up the switches for another lab such as trunking, stp etc.. I'd like be be able to switch between labs when desired with out having to reconfigure each lab, can someone tell me a good way to do this? <br />
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Thank you,<br />
Dave
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I'm creating a Cisco home lab and I'm wanting to know if I can save the startup configs for numerous different labs on the switches and then go from one config to another for when I go to a different lab. For example, lets say I want to set up the switches for a port-channel lab and wanted to save the config, then I set up the switches for a vlan lab and then set up the switches for another lab such as trunking, stp etc.. I'd like be be able to switch between labs when desired with out having to reconfigure each lab, can someone tell me a good way to do this? 

Thank you,
Dave

Changing between the startup configs on a cisco 3750, 3650 and 3550

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.