I am reading through the ASA 8.x release notes for a potential upgrade. Currently, a device is running OS 7.22 and ASDM 5.22. It has 256DRAM and 128 MB flash. I think the confusing area is the amount of flash I need. I keep reading I need to get 256 or 512 MB compact flash for the device. Is this something I need to do? If so, what version of software for an ASA should I used for the configuration I already have?
The flash for ASA5505 is 'on board' and as far as I know it can't be upgraded. You might be able to use a USB drive, but I don't think they are officially supported yet. Anyway, the 128MB of flash is more than enough. I'm running 8.02 and its just over 14MB, so there is plenty of room in flash.
5505 Flash is a standard compact flash card. You can copy the contents to a larger card and use e.g. for intensive logging to the flash. (like 1GB CF Card from Kingston)
Memory is standard PC-DDR module, I know that 512MB runs without troubles (depending on the manufacturer, e.g. Kingston). More than 512MB can raise troubles like not full recognized size. Check memory timings (cl3) and speed (pcxxx).
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...