If you are using layer vlan interfaces on your 4500 then just configure the port as a normal switchport and put it in the correct vlan. You should also be fine to turn on spanning-tree portfast provided you are not running the pix firewall in transparent mode.
If you are running 802.1q on the pix interface (ie logical interfaces) then you need to configure the port as a trunk.
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...