Installation guide

Release Notes for Catalyst 6000 Family Software Release 5.x 41
Uploading a System Image Using Xmodem or Ymodem
This example shows how to disable port negotiation and verify the configuration:
Console> (enable) set port negotiation 2/1 disable
Port 2/1 negotiation disabled
Console> (enable) show port negotiation 2/1
Port Link Negotiation
----- ----------------
2/1 disabled
Console> (enable)
Uploading a System Image Using Xmodem or Ymodem
When you need a system image on the switch, but the switch does not have network access and you
do not have a software image on a Flash PC card, you can upload an image from a local or remote
computer (such as a PC, UNIX workstation, or Macintosh) through the console port using the
Xmodem or Ymodem protocol.
Xmodem and Ymodem are common protocols used to transfer files and are included in applications
such as Windows 3.1 (TERMINAL.EXE), Windows 95 (HyperTerminal), Windows NT 3.5x
(TERMINAL.EXE), Windows NT 4.0 (HyperTerminal), and Linux UNIX freeware (minicom).
Xmodem and Ymodem uploads are slow: use them only when the switch does not have network
access. You can speed up the transfer by setting the console port speed to 38400 bps.
Xmodem and Ymodem file transfers are performed from the ROM monitor with the following
command:
xmodem [-y][-c][-s data-rate ]
In the example, the -y option uses the Ymodem protocol; -c provides CRC-16 checksumming; and
-s sets the console port data rate.
Note See the “ROM Monitor Command-Line Interface” section in the “Command-Line Interfaces”
chapter in the Catalyst 6000 family Software Configuration Guide for more information about the
ROM monitor.
The computer from which you transfer the supervisor engine software image must be running
terminal emulation software that supports the Xmodem or Ymodem protocol.
The following procedure shows a file transfer using the Xmodem protocol. To use the Ymodem
protocol, include the -y option with the xmodem command.
Caution A modem connection from the telephone network to your console port introduces security
issues that you should consider before enabling the connection. For example, remote users can dial
into your modem and access the switch configuration settings.
Step 1 Place a supervisor engine software image on the computer’s hard drive. You can
download an image from Cisco Connection Online (CCO; see the “Cisco Connection
Online” section on page 44).
Step 2 To upload from a local computer, connect the console port (port mode switch in the in
position) to a serial port on the computer, using a null-modem cable. The console port
speed must match the speed configured on the local computer.