Via the postoffice protocol, the sensor sends a heartbeat message to the other CIDS machines it's communicating with. The acknowledgement to this message is the sensor's indication that the route is "up". There's a timeout value that the sensor uses to wait for the response before it declares the route as "down". This timeout is HeartBeatIntervalMultiplier x HeartBeat seconds.
The default HeartBeatIntervalMultiplier is 3 and the default HeartBeat is 5 seconds. So, by increasing the HeartBeatIntervalMultiplier, you're configuring the sensor to wait longer for the response to the heartbeat message that it sent before declaring a "route down" to the corresponding CIDS machine.
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...
[toc:faq]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 and UDP are I...