On 15 Jul, Nick Drage
Will the routing at the LEA not allow you to simply have an extra 254 addresses? Change your allocation from 172.19.50/24 to 172.19.50/23, which will give you 172.19.50.0 -> 172.19.51.255 ( worked out, in my head, with a cold, so I may be right about the theory but wrong about the ranges ).
I'm afraid the LEA are not the easiest people to negotiate with. They allocated us the range 172.19.50.x and setup/provided the router. I have not looked at reconfiguring the router but I don't think the LEA would like this. This means (I think) that I'm stuck with 255.255.255.0 as a netmask. I'm pretty sure all the other similar ranges are allocated to local schools so changing netmask could also hit other problems. Thanks for *all* the help. Dave