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相应peng的号召，所以我起了这个名字的主题。但是不知道是否经典：）
首先是文件系统方面
How to Download a Software Image to a Cisco 2600 via TFTP Using the tftpdnld ROMMON Command
This document explains how to download a software image to a Cisco 2600 using Trivial File Transfer Protocol (TFTP) over the first LAN port using the tftpdnld ROMMON command.
Notes:
* The ROMMON TFTP transfer works on the first LAN port only; however, for the Cisco 2612, you can choose the Token Ring or Ethernet port.
* You can only download files to the router. You cannot use ROMMON TFTP to get files from the router.
* Does not support source route bridging on Token Ring ports.
Operation
First, you must set ROMMON environment variables prior to the TFTP download. All variable names are case sensitive.
You can view the ROMMON environment variables by using the set command, as shown below:
rommon 3 > set PS1=rommon ! > IP_ADDRESS=172.18.16.76
IP_SUBNET_MASK=255.255.255.192
DEFAULT_GATEWAY=172.18.16.65
TFTP_SERVER=172.18.16.2
TFTP_FILE=quake/rel22_Jan_16/c2600-i-mz
The variables to set for tftpdnld are shown below:
usage: tftpdnld
Use this command for disaster recovery only to recover an image via TFTP.
"tftpdnld" has no arguments. Monitor variables are used for arguments.
(Syntax: "VARIABLE_NAME=value" and use "set" to show current variables.)
"ctrl-c" or "break" stops the transfer before flash erase begins.
The following variables are REQUIRED to be set for tftpdnld:
IP_ADDRESS: The IP address for this unit
IP_SUBNET_MASK: The subnet mask for this unit
DEFAULT_GATEWAY: The default gateway for this unit
TFTP_SERVER: The IP address of the server to fetch from
TFTP_file: The filename to fetch
The following variables are OPTIONAL:
TFTP_VERBOSE: Print setting. 0=quiet, 1=progress(default), 2=verbose
TFTP_RETRY_COUNT: Retry count for ARP and TFTP (default=7)
TFTP_TIMEOUT: Overall timeout of operation in seconds (default=2400)
TFTP_CHECKSUM: Perform checksum test on image, 0=no, 1=yes (default=1)
rommon 14 >
The variables to set for Token Ring are shown below:
TR_1E1R_PORT On the Cisco 2612, this variable sets the Token Ring or Ethernet port.
0 = use Ethernet port
1 = use Token Ring port
Default is 0
TR_SPEED_MODE For a Token Ring port, this variable sets the ring speed and duplex mode.
0 = 4 Mbps half-duplex mode
1 = 4 Mbps full-duplex mode
2 = 16 Mbps half-duplex mode
3 = 16 Mbps full-duplex mode
Default is 2
The variables to set for Fast Ethernet are shown below:
FE_SPEED_MODE 0 = 10 Mbps half-duplex mode
1 = 10 Mbps full-duplex mode
2 = 100 Mbps half-duplex mode
3 = 100 Mbps full-duplex mode
4 = auto-negotiation
Default is 4
You must use the sync command to save ROMMON environment variables to nonvolatile RAM (NVRAM).
Example
rommon 16 > IP_ADDRESS=171.68.171.0
rommon 17 > IP_SUBNET_MASK=255.255.254.0
rommon 18 > DEFAULT_GATEWAY=171.68.170.3
rommon 19 > TFTP_SERVER=171.69.1.157
rommon 20 > TFTP_FILE=c2600-is-mz.113-2.0.2.Q
rommon 21 > tftpdnld
IP_ADDRESS: 171.68.171.0
IP_SUBNET_MASK: 255.255.254.0
DEFAULT_GATEWAY: 171.68.170.3
TFTP_SERVER: 171.69.1.129
TFTP_file: c2600-is-mz.113-2.0.3.Q
Invoke this command for disaster recovery only.
WARNING: all existing data in all partitions on flash will be lost!
Do you wish to continue? y/n: [n]: y
Receiving c2600-is-mz.113-2.0.3.Q from 171.69.1.129 !!!!!.!!!!!!!!!!!!!!!!!!!.!!
File reception completed.
Copying file c2600-is-mz.113-2.0.3.Q to flash.
Erasing flash at 0x607c0000
program flash location 0x60440000
rommon 22 >
How to Download a Software Image to a Cisco 2600 through the Console Port Using the xmodem ROMMON Command
You can download a software image to a Cisco 2600 through the console port using the xmodem [-cyr] [filename] ROMMON command, where:
* -c specifies CRC-16
* -y specifies YMODEM protocol
* -r copies the image to RAM. (It does not copy to Flash. Leave off the -r to copy the image to Flash.)
Notes:
* The ROMMON XMODEM/YMODEM transfer works on the console port only.
* You can only download files to the router. You cannot use XMODEM/YMODEM to get files from the router.
Example
rommon 1 > xmodem -c c2600-is-mz.113-4.T1
Do not start the sending program yet...
File size Checksum File name
4466148 bytes (0x4425e4) 0x7a90 c2600-is-mz.113-2.0.3.Q
WARNING: All existing data in bootflash will be lost!
Invoke this application only for disaster recovery.
Do you wish to continue? y/n [n]: y
Ready to receive file c2600-is-mz.113-4.T1 ...
Erasing flash at 0x607c0000
program flash location 0x60440000
Download Complete!
program load complete, entry point: 0x80008000, size: 0x4412cc
Self decompressing the image : ################################################]
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