Is it possible to force an ASA to release and/or renew a DHCP lease? To be clear, the ASA is a DHCP client in this case, getting its IP address from an ISP on an external interface. I couldn't seem to find anything in the docs for this function, which seems like a pretty basic thing to want to do. I saw some references to doing this through ADSM, but nothing from the CLI. This is an ASA5505 running 8.2(2) if that matters.
That's surprising ... Presumably that would be "no ip address dhcp" command from the interface level of the CLI? Does that command specifically generate a DHCP release on the interface? Occasionally I need to release the DHCP IP address - otherwise the ISP will not hand out a new address if I need to switch routers for some reason...
But specifically when I delete the "ip address", does that cause a DHCP release?
The scenario I'm interested in is if I'm using the ASA as a router for my ISP, but I want to switch to a different router (i.e. not the ASA). My ISP will not provide a new DHCP address until the current one is released (or the lease expires, or you call into tech support to manually release the address). I'd like to be able to force the ASA to release the address, but not necessarily renew it with the ASA.
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...