Bad mask error

[Dosia]

I'm configuring DHCP using vlsm ip address 192.168.1.65/26. I keep getting a bad mask error. Any help please?

[Georg Pauwen]

Hello,

what device is this on ? What exactly are you typing/configuring ?

[Jon Marshall]

192.168.1.64/26.

Jon

[balaji.bandi]

Hope you subnet in to 4 subnet in the /24 then you need to use as below to work.