Cisco… what else…
today I let you know how you can do a “secure” automatic backup from your router configuration… let’s go! I’ve done it with an Windows Server 2003 as backup server you can also try it with a Linuxbox 😉
Note: the username and password are stored in cleartext in the config.
Download & Install OpenSSH for windows (http://sshwindows.sourceforge.net)
Create a local user:
open services.msc and start this service -> “OpenSSH”
Now test with putty if you can connect to this SSH Server
Now we have to configure the router that it does the backup automatically.
Path: save path
Write-memory – when you save manually he will save also via SCP
Time-period: 1440 Minutes -> daily backup | 10080 weekly backup
Connect to router via SSH and execute following commands
router# conf t
router(config-archive)# path scp://cisco:email@example.com//cygdrive/e/backup/network/switch/$h/$t-$h
router(config-archive)# time-period 1440
router# write memory
You are done!
Every time you do a write memory – it will also save via SCP!
Today i get a call from a customer that he had deleted the whole flash from his 3560X switch and when he restarted the switch it won’t come up… why? 😉
so i told him that without the .bin image on the flash it’s not possible that the switch will run…
What can i do?
You can do an IOS recovery… but not with the very slow xmodem (i know you can tune it up to !WOW! 115kbps)… but nowadays with an USB flash drive…
Here you can see how it works:
NOTE: Not all USB flash drives are supported, hence my recommendation to get several ready.
1. USB pen drive max. 16GB format as FAT16
2. copy the .bin image onto the flash drive
3. disconnect the switch from power
4. connect the flash drive to the switch
5. hold the “mode” button on the switch, give power, hold the button until the SYST LED flashes only green fast and when it is green and stop flashing hold on 2 seconds and then leave the button, otherwise it will boot “normaly” (takes about ca. 30-40 seconds)
6. switch: flash_init
7. …wait… (it could be that the switch will hang on —more— push enter and it will go on, try it)
8. switch: dir usbflash0: !!check if the switch can read from USB
9. switch: copy usbflash0:IOS-IMAGE.bin flash: IOS-IMAGE .bin !!copy the image from usb to flash
10. switch: boot flash: IOS-IMAGE .bin !! with this command the switch boots up with the image immediately
11. conf t !! enter to conf t
12. boot system flash:.bin !! don’t forget to set the image as bootvar 😉
13. wr mem !! and save it, so it will boot also when it get powered off 😉
I tried it also to recover the IOS image with TFTP via the management port… but it doesn’t worked for me… it get not up the management port, so i couldn’t copy the file from TFTP to FLASH…