Looking for advice ....we have a corporate uk wide wireless ....it has a big subnet and on average 754 active clients at one time . Whet is the recommendation per vlan ? Is it the same as a LAN based network ( 254) .
It varies to be honest. I typically use /24 but at times have had to use a /21 or larger. If you are not having issues then there is no issue. The only reason you would break up a large subnet is to create smaller broadcast domains. I have used a /16 for guest subnets with no complaints from guest users:)