Heartbeats - Alan's doc
trevor at interback.com
Mon Oct 19 09:18:28 MDT 1998
At 07:07 AM 10/19/98 -0600, you wrote:
>trevorc at home.com wrote:
>> I've been a lurker on this list for a while.... but I just read Alan's
>> HA webpage..
>> A comment on heartbeats...
>> 1. both will be required simultaneously.
>Do you mean multiple types of heartbeat monitors? For example, serial
Yes... the serial would be inexpensive enough (hardware wise), in a two
node config that it would be silly not to use it in addition to the
ethernet (IP) connection. Another SPOF avoided !
The only objection I can see to not using an ethernet (IP) heartbeat
topology is slots. Possibily parallel port ethernet adapters with a
crossover utp cable ?
>> 2. the switch referred to for the serial topology, is this a
>> commercially available device today ?
>I believe so. I saw what I *think* is that switch in the Black Box
Like a printer switch but for serial ? Why ?
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