Until there is no requirement of direct broacast between sgement, you should avoid, since the risk of DoS attacks.
here is cisco point of view :
IP directedbroadcastsare droppedby default.DroppingIP directedbroadcastsreducesthe risk of DoS attacks.You can enableforwardingof IP directedbroadcastson an interfacewherethe broadcastbecomesa physicalbroadcast.You enablethe translationof directedIP broadcastpacketsto Layer2 broadcastframeson theinterfacethat is connectedto the IP networkthat the IP directedbroadcastis addressedto. For example,ifIP Application Services Configuration Guide, Cisco IOS Release 15SY 47Configuring IPv4 Broadcast Packet HandlingIP Directed Broadcast Address
you need to translateIP directedbroadcastswith the IP destinationaddressof 172.16.10.255to Layer2broadcastframes,you enablethe translationon the interfacethat is connectedto IP network172.16.10.0/24.You can specifyan accesslist to controlwhichdirectedbroadcastsare forwarded.Whenan accesslist isspecified,only thoseIP packetspermittedby the accesslist are eligibleto be translatedfrom directedbroadcaststo physicalbroadcasts.
