Cisco WS-C2980G-A Software Guide - Page 548

Creating a Configuration File Chapter 35 Working with Configuration Files If passwords already exist, you cannot enter the set password and set enablepass commands because the password verification will fail. If you enter passwords in the configuration file, the switch mistakenly attempts to execute the passwords as commands as it executes the file. • Some commands must be followed by a blank line in the configuration file. Without the blank line, these commands might disconnect your Telnet session. Before disconnecting a session, the switch prompts you for confirmation. The blank line acts as a carriage return, which indicates a negative response to the prompt, and retains the Telnet session. Include a blank line after each occurrence of these commands in a configuration file: - set interface sc0 ip_addr netmask - set interface sc0 disable - set module disable mod_num - set port disable mod_num/port_num Creating a Configuration File When creating a configuration file, you must list commands in a logical way so that the system can respond appropriately. To create a configuration file, follow these steps: Step 1 Step 2 Step 3 Step 4 Step 5 Download an existing configuration from a switch. Open the configuration file in a text editor, such as vi or emacs on UNIX or Notepad on a PC. Extract the portion of the configuration file with the desired commands and save it in a new file. Make sure the file begins with the word begin on a line by itself and ends with the word end on a line by itself. Copy the configuration file to the appropriate TFTP directory on the workstation (usually /tftpboot on a UNIX workstation). Ensure that the permissions on the file are set to username. This example shows a sample configuration file. This file could be used to set the DNS configuration on multiple switches. begin ! #dns set ip dns server 172.16.10.70 primary set ip dns server 172.16.10.140 set ip dns enable set ip dns domain corp.com end Configuring the Switch Using a File in Flash Memory You can configure the switch using a file stored in Flash memory. The procedure varies depending on your switch platform. 35-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01