The network I'm working on was once one big VLAN - everyone was on the same broadcast domain.
This included an apple lab that had several mac mini systems setup with Screen Sharing active.
Once the network was VLAN'd (separating the main user community from the lab system) - Screen Sharing to these lab Macs became unavailable.
A mac user needing access to the lab mac could still VNC in (i.e. VNC://labmac) but could no longer get to the Mac via Screen Sharing from the Finder.
I understand that Apple Remote Desktop will not work across VLANs but is Screen Sharing affected in a similar manner or is there some modification within the VLAN or lab ports these Macs are connected to in order to reactivate Screen Sharing?
The network is connected to a Cisco 4510 switch - Layer3 - which handles the VLANs/routing