My purchased 128mb flash just arrived in my mailbox. Well it was empty, nothing inside...so Cisco router will boot into rommon. Here are the parameters that are REQUIRED: IP_ADDRESS IP_SUBNET_MASK TFTP_SERVER TFTP_FILE DEFAULT_GATEWAY WARNING: Once you finished transferring file to the flash using tftp all your previously stored contents within the flash will be wiped … Continue reading How to load IOS from Rommon
Reference: http://www.cisco.com/en/US/docs/routers/access/1800/1841/software/configuration/guide/b_rommon.html#wp1064046 Before you load any new ios to replace the new one, remember to backup everything from the router's flash to your tftp server! I only backed up my IOS but did not backup the softwares in the router, after the disaster recovery everything except the IOS was gone! It's a painful experience! Luckily … Continue reading Router disaster recovery steps.