Dude !!!
If it R&D setup or production setup follow below guidelines..
1.To connect your hosts in iSCSI, always use GigabitEthernet ports.
2.You can go for Unmanaged switches like Netgear/Dlink.
3.If you want managed switch then use
Cisco Catalyst 2960G-24TC-L
Cisco Catalyst 2960G-48-TC-L
with LAN Base image, as you won't require any configuration.
4.IMP , do not connect iSCSI switch to your production/regular/core network, as it will have lot of broadcasts.
5.Make sure the IP addresses you are using are not used in your production network.
HTH...rate if helpful...
