Changing Console Line Speed; Changing Gateway Line Speed - Cisco AS5350 - Universal Access Server Configuration Manual

Chapter 1 Understanding Basic Hardware Architecture and Cisco IOS Software
To correct a console session mismatch, do one of the following:
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Changing Console Line Speed

Caution Changing your console line speed on an active Cisco AS5350 or Cisco AS5400 results in a temporary
loss of synchronization between the console line and terminal port speeds. At this point the gateway may
recognize a false send break command that may result in your system crashing.
To avoid this problem, you can do one of the following:
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Log in to your Cisco AS5350 or Cisco AS5400 through the AUX port or Telnet VTY session. Enter the
show running-config command and determine what speed your line console is set. Possible console
speeds are 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. The default setting is 9600.
If your gateway is in ROM monitor mode, then the AUX port is not functioning. You must then change
the terminal server port speed through your console port connection until the
displayed. See

Changing Gateway Line Speed

The following example shows how to configure line speed on a Cisco AS5350 or Cisco AS5400,
beginning in global configuration mode:
Router(config)# line 3
Router(config-line)# speed speed_value
OL-3418-02 B0
Change your console line speed.
Change your terminal server speed.
If the above two solutions do not correct console session, install the console jumper on the
motherboard to set your default console port speed to 9600 bps.
For Revision 1 motherboards, the jumper is set at motherboard pin location or row J3, where the top
two pins (toward the back of the board) are jumpered. For Revision 3 motherboards, pins 1 and 2 for
row J1 must be shorted out.
If the configuration register on your Cisco AS5350 or Cisco AS5400 already has the Break Abort
Effect bit set (mask is 0x0100), then you are protected and the false send break event does not occur.
(You can change the configuration register to have this bit set, but the change does not take effect
until your gateway is rebooted.)
If the configuration register does not have the Break Abort Effect bit set (mask 0x0100), then
disconnect the cable on the console port and either log into the Cisco AS5350 or Cisco AS5400
through the AUX port or telnet in through a VTY session. Change the console line speed and the
related terminal server speed, then reconnect the console cable.
Appendix B, "ROM Monitor."
Cisco AS5350 and Cisco AS5400 Universal Gateway Software Configuration Guide
Upgrading to a New Cisco IOS Release
prompt is
rommon>
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