in that case you should change the default gateway on your server (192.168.1.133) to 192.168.1.253 instead of 192.168.1.254
BTW which of them is your extreme switch?
I have a net with 192.168.1.0/24 and i want to the server 192.168.1.133 going to internet (0.0.0.0/0) by gateway 192.168.1.253 and the host 192.168.1.10-50 going to internet by gateway 192.168.1.254 for example