A few weeks ago our network engineers had some trouble upgrading cisco switches. They had to revert the change but we're still having trouble with booting the pvs targets in one datacenter. At first it's fine but after several boots targer get a timeout with the tftp boot and the connecting to the Provisioning server. Resetting the stream service sometimes helps. Anybody experienced this before? Working with 2507.1 and vmware vsphere 8.

Is it working with BDM/ISO?

BDM/ISO had the same problem. Out networking guys made it work again but don't know how. It looks like tcp connections worked fine but udp gave problems.