Can't log into a router 2900 after downgrading IOS
last Friday I loaded a bew IOS file on a 2921 router. Today, remotely, I have reloaded it but now I can't load in to the router via Telnet, SSH or CCP. Obvioulsy, I have successfully established a Telnet session in order to send the reload command; it has reloaded and now it prompts for user/password but the ones I used before are no longer valid. Any help, please?
The older version was 151-4.M4 and the new one 151-3.T4
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...