EN - cast away in ROMMON

Hey,

today I was cought up in rommon in a router configuration.
I had to config 3 2651 routers. One of them had a corrupt IOS file and booted to ROMMON only.

I feares I had to use a xmodem connection to get an new IOS loaded to the flash, but luckily there is a posibility to use TFTP in ROMMON. To get the following commands working, the IP connectivity must be working, eg Routing from/to the TFTP server.

Your prompt should look like: rommon 1 >
Now you have to assign all essential informations to it:
IP_ADDRESS=192.168.100.1
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=192.168.100.2
TFTP_SERVER=192.168.100.2
TFTP_FILE=c2600-i-mz.123-26.bin
tftpdnld

The last command starts the transfer and if its finished enter reset.

Now the router is booting with its brand new IOS.

have fun,
Zif

DE- ASA Passwort Wiederherstellung – Hinweis

Wenn man mal in die Verlegenheit kommt und auf einer ASA die Passwortwiederherstellungsprozedur durchführen zu müssen wie auf der Cisco Seite beschrieben, (Passwort Recovery Guide) kann es zu merkwürdigen Symptomen kommen. Ich habe Gestern eine ganze Weile damit zugebracht herauszufinden warum auf einer Kunden ASA das PPPOE plötzlich nicht mehr ging. Nach einiger Zeit und der Tatsache das ein Debug auf PPPOE gar nichts brachte, konnte ich heraus finden das das Register der ASA nicht passte. Es zeigte sich dann, dass das zurücksetzen des Konfigurationsregisters zusammen mit einem Neustart das Problem restlos löste. Ergo hing die ASA die ganze Zeit im Passwortwiederherstellungsprozess. Interessanterweise funktionierte der Rest der aktivierten ASA Features wie gewohnt.

Cheers NWG

EN - ASA Password recovery - something to note

If you are doing ASA password recovery like it is discribed on CISCO.com
(Recovery procedure link)
One thing you might notice that some functions are not working as expected. Well the „disable system configuration?“ question has to be answerd with „Yes“ so sure nothing should realy work.
Yesterday I spend quite a lot of time till I recognised that the ASA was nearly working except for the PPPOE part. A debug on pppoe showed ..well nothing. After some time I figured that the customer did not switch the configuration register back to the defaults and did not do a reload, so we were still hanging in the password recovery process. Switching back the configuration register, reloading and hurray the ASA was back up online. Interesstingly the rest of the activated features worked like a charm.

Cheers NWG