I am confuse about why Cisco ASA Transparant can't support QoS, Do transparant ASA don't traverse traffic with QoS tagging or they (transparant ASA) traverset traffic with QoS but don't support QoS modification/implementation in Cisco like traffic shapping, Queque management ?
Packets take a different code path internally when the ASA is in transparent mode versus routed mode and this path does not include QoS support. Your best bet would be to implement this on the switch connected to the ASA, or another device upstream.
I would also suggest contacting your Cisco account team and asking that a product enhancement request be filed if this is a requirement for you.
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...