In the flash of a router other than the IOS software what other software are present? This question is being asked because it is important to take a back up of all the software including the IOS software in the flash memory of a router for effective disaster management.
It varies according to the model and version of IOS.
Also if your operations staff isn't good about keeping the flash cleaned up there acan be lot of unimportant files there - old images and configs, crashdump files etc. that have no useful purpose.
Better is to have a network management system that is doing periodic updates of all of the relevant configurations, including IOS images where applicable. If you're running current IOS it can always be retreived from cisco.com as well.
I would ask though, if you are planning for Disater Recovery (DR), what is the scenario where you would have to recover a device but don't have the operating system? Whether its at a DR site, from local spares or an RMA from the vendor, the IOS should already be included.
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...