I am amzed to see one of my 6500 listed automtically in security and monitor devices, as discovery was on for daily basis but it was not being discovered for like past 30 days (when i first bootstrapped it) and now today, without any addional configuration (on switch or ASA), switch is discovered.
I have an ASA in front of this switch, and had allowed UDP ports for MARS, and last day i was thinking to open IP for it, to get this switch discovered, but it got done automatically.
Amazingly, the redundant switch has not been discovered yet, having same bootstrap config and same subnet (as of switch).
I believe this works on CDP, and SNMP, nothing more, then why is it acting like that?
MARS uses SNMP v. 1 to perform device discovery. If MARS is unable to discover a device and you are sure that the configuration settings are correct, verify that the device is not expecting the authentication from MARS to occur over an encrypted channel.
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...