Cisco Cisco IOS Software Release 12.0(2a)T1 Guide D’Information
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Backup the Router or Access Server Configuration
Cisco recommends that you keep a backup of the router/access server configuration before you upgrade the
Cisco IOS software image.
Cisco IOS software image.
Step 1: Install a TFTP Server
A TFTP server or an RCP server application must be installed on a TCP/IP−ready workstation or PC. Once
the application is installed, a minimal level of configuration must be performed by completing these steps:
the application is installed, a minimal level of configuration must be performed by completing these steps:
Configure the TFTP application to operate as a TFTP server as opposed to a TFTP client.
1.
Specify the outbound file directory. This is the directory in which the Cisco IOS software images are
stored (see Step 2). Most TFTP applications provide a set−up routine to assist in these configuration
tasks.
stored (see Step 2). Most TFTP applications provide a set−up routine to assist in these configuration
tasks.
Note: A number of TFTP or RCP applications are available from independent software vendors or as
shareware from public sources on the World Wide Web.
shareware from public sources on the World Wide Web.
2.
Step 2: Download the Cisco IOS Software Image
Download the Cisco IOS Software image into your workstation or PC from the Download Software area.
Make sure the Cisco IOS software image that you downloaded supports both your hardware and the required
features. You can verify hardware and feature support using the Cisco Software Advisor tool (registered
customers only) . You must also check the memory requirements for both Dynamic RAM (DRAM) and Flash
in order to make sure the router has enough DRAM and Flash memory to load the selected Cisco IOS
software version. For more advice on choosing the right Cisco IOS Software Release for your router, refer to
How to Choose a Cisco IOS Software Release.
features. You can verify hardware and feature support using the Cisco Software Advisor tool (registered
customers only) . You must also check the memory requirements for both Dynamic RAM (DRAM) and Flash
in order to make sure the router has enough DRAM and Flash memory to load the selected Cisco IOS
software version. For more advice on choosing the right Cisco IOS Software Release for your router, refer to
How to Choose a Cisco IOS Software Release.
Run From Flash Installation
Complete these steps in order to run from flash installation:
Note: For RCP applications, substitute RCP for every occurrence of TFTP. For example, use the copy rcp
flash command instead of the copy tftp flash command.
flash command instead of the copy tftp flash command.
Establish a console session to the router.
Even if it is possible to connect to the router through a telnet session, it is strongly recommended to be
directly connected to the router through the console port. The reason is that if something goes wrong
during the upgrade, it might be necessary to be physically located next to the router to power−cycle it.
Moreover, you will lose the telnet connection while the router is rebooting during the upgrade
procedure.
directly connected to the router through the console port. The reason is that if something goes wrong
during the upgrade, it might be necessary to be physically located next to the router to power−cycle it.
Moreover, you will lose the telnet connection while the router is rebooting during the upgrade
procedure.
A rolled cable (usually a flat black cable) is used to connect the console port of the router to one of
the COM ports of the PC.
the COM ports of the PC.
1.
Once the PC is connected to the console port of the router, you need to open Hyperterminal on the
PC, and use these settings:
PC, and use these settings:
2.