Cisco Catalyst 9400 User Manual

Recover from a Corrupt or Missing Image
The Supervisor boots into ROMmon mode if the image specified is corrupt or no image file exists. Typically,
you should have more than one image in the bootflash: device so that the switch can be recovered.
Complete these steps, in the order given, to facilitate a successful image recovery from ROMmon mode
without any valid image.
1. Make a console connection to the Supervisor. Typically on a standard Windows operating system
platform, configure a HyperTerminal connection directly to COM1 with these settings:
• 9600 bps
• Eight data bits
• No parity
• One stop bit
Use a rolled male RJ-45 cable to connect from COM1 on the PC to the console port on the Supervisor
module. Use a DB-9 connector on the PC, and a HyperTerminal connect window to connect to the
Supervisor.
2. Press Enter. If you get the rommon > prompt, skip to Step 3. If the switch continuously reboots, press
Control-C to prevent autoboot and to get into ROMmon mode.
**********************************************************
* *
* Welcome to ROM Monitor for WS-X4014 System. *
* Copyright (c) 2002 by Cisco Systems, Inc. *
* All rights reserved. *
* *
**********************************************************
ROM Monitor Program Version 12.1(11br)EW
Board type 1, Board revision 5
Swamp FPGA revision 14, Dagobah FPGA revision 48
MAC Address : 00-01-96-d9-f6-fe
Ip Address : Not set.
Netmask : Not set.
Gateway : Not set.
TftpServer : Not set.
Main Memory : 256 Mbytes
***** The system will autoboot in 5 seconds *****
Type control-C to prevent autobooting.
!--- Press Control-C.
Autoboot cancelled......... please wait!!!
rommon 1 > [interrupt]
3. Verify that there is a valid file present in the bootflash: by issuing the dir bootflash: command, as this
example shows. If you do have any valid file, see the Recovering from a Continuous Reboot section of
this document for the recovery. Otherwise, continue to the next step.
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
424
Recover from Corrupt or Missing File Image or in ROMmon Mode
Recover from a Corrupt or Missing Image

Cisco Catalyst 9400 Specifications

General

Product Series	Catalyst 9400 Series
Layer	Layer 2/3
Operating System	Cisco IOS XE
Switch Type	Modular
Uplink Interfaces	10 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet
Stacking	No
Form Factor	Modular Chassis
Operating Temperature	0°C to 40°C (32°F to 104°F)
Redundancy	Power supplies
Security Features	MACsec
Management	Cisco DNA Center, CLI, SNMP