Note: forwarded message attached.
=====
Xu He
Senior Network Engineer
Verisign, Inc.
http://www.verisign.com
(o)704-378-1398
(c)704-231-7186
__________________________________________________
Do You Yahoo!?
Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com --- Begin Message ---
Neil,
Netview with its polling function is like a heartbeat checker. It pings
periodically and verify weather the device is up or down. The DM
implementation of Heartbeat, if I remember correctly is for the endpoints to
send periodic events periodically to TEC. There's a rule in TEC that check
whether a heartbeat was received in a specific interval, if it did not a new
event shows up on TEC. The heartbeat monitor was primary implemented to make
sure that the DM engine was running. IMHO, it was just a temporary fix to the
DM Engine dying or the endpoint hanging problems.
Depend on what are you trying to monitor, it dictates whether a heartbeat
monitor is useful at all. If you just monitoring up-and-down status of a box,
netview is designed for that. If you are trying to monitor whether a NT
Service is hung but still show up as running in Service Viewer, and you can
determine that the reason that the service is hung is that a log file stopped
getting updated. Then a customized heartbeat monitor could be useful.
>From a network standpoint, ICMP echo (PING) is always more efficient than 1
wpostemsg or postemsg.
just my $0.02
Xu
--- neil.wood1@barclays.co.uk wrote:
> Netviewers
>
> It has been sugested that we use netview as a means of heartbeating instead
> of Distributed Monitoring. This seems logical, however looking through
> the archives I am unable to find any instances of this?
> Are there any reasons why DM would provide a better solution than netview
> for heartbeating, or any reasons netview shouldn't be used?
> Hope this question isn't too simplistic.
>
> Thanks Neil
>
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=====
Xu He
Senior Network Engineer
Verisign, Inc.
http://www.verisign.com
(o)704-378-1398
(c)704-231-7186
__________________________________________________
Do You Yahoo!?
Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com
--- End Message ---
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