Cluster services heartbeat, as seen on the wire

[joea at j4computers.com]

>>>> "Bill Brush" <bbrush at gmail.com> 07/18/08 11:20 AM >>>
>On Fri, Jul 18, 2008 at 9:01 AM, joea at j4computers.com
><joea at j4computers.com> wrote:
>> Chasing another problem, did a tcpdump to read with wireshark
>>
>> Noticed a number of packets identified as protocol NCS, Novell Cluster Serices Heartbeart.
>>
>> The majority of them were sent to "broadcast".  Since NCS is explicity configured, cannot see what that should be so.
>>
> >Very few seemed explictly between cluster members.  Which is what I woudl expect all to be.
>>
>
>IIRC the master node broadcasts its heartbeat so that all secondary
>nodes receive it.  The secondary nodes do a unicast back.  Again this
>is if my memory is serving, which it might not be.  It's been years
>since I looked at how that worked.
>
>Bill

The docs appear to say the master node will "multi cast" to "all nodes in the cluster".   But these are broadcasts.  I suppose it is normal behavior.

joe a.