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How to easily configure multiple Catalyst switches in a network for similar changes
In a network consisting of multiple Catalyst switches running similar configuration, an administrator normally has to access (console or Telnet) each switch individually and apply all the required configuration changes, which consumes time.
Non-modular switches such as 2950, 3550, 3560, 3750 that run Cisco IOS system software use the default file name config.text for the startup configuration while booting.
To change the configurations on multiple switches easily, consider these two options:
Rename the config.text file, by issuing the rename flash:config.text flash:config.old command.
Create another config.text file with the required changes, then TFTP the tftp:config.text flash: file to the switch, issuing thecopy command.Reload the switch. This makes the switch boot with the new configuration (config.text) as the default configuration file.
Note: If the IP address is configured, be careful to avoid duplicate IP addresses in the same network. You must configure unique IP addresses, accessing individual switch by Telnet or console.
Alternatively, Cisco Network Assistant (CNA) is an application that manages stand alone devices and clusters of devices from anywhere in your intranet. Using its Graphical User Interface (GUI), you can perform multiple configuration tasks without using Command Line Interface (CLI) commands. You can apply actions to multiple devices and ports at the same time for VLAN and QoS settings, inventory and statistics reports, link and device monitoring, software upgrades, and many other networking features. You can manage switches, routers, Access Points, PIX firewalls, as well as view IP phones.
Network Assistant simplifies cluster management by offering an intuitive GUI and alternative modes for configuring network devices.