Cisco 1941W Configuration Manual page 238

How to Upgrade the Cisco IOS Image
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DETAILED STEPS
Enter ROM monitor mode.
Step 1
Set the IP address of the router. For example:
Step 2
rommon > IP_ADDRESS=172.16.23.32
Set the IP subnet mask. For example:
Step 3
rommon > IP_SUBNET_MASK=255.255.255.224
Set the default gateway address. For example:
Step 4
rommon > DEFAULT_GATEWAY=172.16.23.40
Set the TFTP server IP address, which is the location from which the software will be downloaded:
Step 5
rommon > TFTP_SERVER=172.16.23.33
Step 6 Set the name and directory location to which the image file will be downloaded onto the router. For
example:
rommon > TFTP_FILE=archive/rel22/<image name>
(Optional) Set the input port to use a Gigabit Ethernet port. Usage is GE_PORT=[0 | 1 | 2]. For example:
Step 7
rommon > GE_PORT=0
Step 8 (Optional) Set the Ethernet media type. Usage is TFTP_ MEDIA_TYPE=[0 1], where Copper= 0 and
Fiber=1:
rommon > TFTP_MEDIA_TYPE=1
Step 9 (Optional) Decide whether the router will perform a checksum test on the downloaded image. Usage is
TFTP_CHECKSUM=[0 | 1], where 1=checksum test is performed (default) and 0=no checksum test. For
example:
rommon > TFTP_CHECKSUM=0
(Optional) Set the number of times that the router will attempt Address Resolution Protocol (ARP) and
Step 10
TFTP download. The default is 7 attempts. For example:
rommon > TFTP_RETRY_COUNT=10
(Optional) Set the amount of time, in seconds, before the download process times out. The default is
Step 11
2400 seconds (40 minutes). The following example shows 1800 seconds (30 minutes):
TFTP_TIMEOUT=1800
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
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(Optional) Set the TFTP_DESTINATION=[flash0: | flash1: | usbflash0: | usbflash1:] flash
destination device for file.
(Optional) Set the GE_SPEED_MODE= speed configuration.
Use the set command to verify that you have set the variables correctly.
Use the tftpdnld [-r] command to download the image.
Chapter Upgrading the Cisco IOS Software