Nagios and Microsoft "cluster"

[Bill Mathews]

Andrew Grimberg wrote:

 >If you can get your customer to give you more information on the
 >cluster, I bet they will tell you that it is an NLBS cluster in unicast
 >mode.  You might suggest to them that they work with their network techs
 >to switch over to multicast mode, that should hopefully help a little
 >with the problem.  A better suggestion is for them to get a hardware
 >load balancer instead of using Microsoft's NLBS solution.  As we've
 >discovered on our network, it causes a lot of problems on the media
 >layer that kills some network security.

Oooooh, I bet you're 100% right. We had a similar issue with firewall 
clustering on their network. Had to move to unicast mode to get around 
Cisco's issues with multicast. Thanks for your pointer.

Bill







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