DNS across VLANs


So I have this DHCP

VLANS all like this

and DNS like this

From any computer in VLAN 100 I can ping another computer in VLAN100 like this

ping cws-yellow-room

But, if I try to ping a server (by name and not IP) that is on a different vlan (vlan200) it can't resolve the name.

I.e. how can I can the DNS to work across the VLANS.... 

Note: I have added a record to the 'DNS Host Entry' section to line the name to the IP and that did nothing so I removed it again.....


Edited TAGs
[edited by: emmosophos at 5:14 PM (GMT -7) on 16 Aug 2022]