I don't know if this represents a bug report or a feature request, but I'll describe what we are experiencing and go from there.
We are monitoring a bunch of DNS servers in our data center for availability. We use a combination of the A record and NS record probes. In some cases we monitor a DNS server directly, and in other cases we use a layer 4 load balancer to intelligently distribute load between devices. Apparently, all DNS queries sent by these probes, regardless of the map or device, bind to the same source UDP port. This is causing us some difficulty in monitoring the array of servers behind our load balancers, as the layer 4 information (src port, destination port 53) is always the same. It matches, and keeps alive, a single layer 4 session in the LBS. It limits our ability to monitor the entire array of servers in the same way our customers would. Is there a reason why all the DNS probes use the same source port? Would it be possible to have it bind on a per query basis? Does this happen with other probes that we haven't found yet? Thanks, Tony ____________________________________________________________________ List archives: http://www.mail-archive.com/intermapper-talk%40list.dartware.com/ To unsubscribe: send email to: [EMAIL PROTECTED]
