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Re: Heartbeats Straw Poll
On Tue, 8 Aug 2000, Michael Richardson wrote:
> No need. The SA tells you.
> You just don't care if you see the ICMP Echo Response. You see *traffic*
> that is that is enough to know that things are alive. If you see no traffic
> for awhile, then you must force some to see if the SA is alive. The only
> thing that this screws up is some NAS/client PPP idle timer, but all
> heartbeat/make-dead protocols screw that up.
I also don't remember seeing that all hosts MUST answer to icmp echo
requests. Lots of hosts don't. Lots of firewalls don't. Your policy may
This is not a good general purpose solution.
Jan Vilhuber email@example.com
Cisco Systems, San Jose (408) 527-0847