connecting zynq 706 with my PC using switch

hi,

i am working on zynq 706. i successfully connected my zynq with PC directly without use of switch. Now, i want to connect zynq to my PC using switch.

first switch has the IP=176.176.15.2 and its Gateway is=176.176.15.1 which is connected to second switch having IP=176.176.16.2 and Gateway=176.176.16.1 with which zynq is connected. Now , i dont know how to access that zynq from my PC. however i m successfully pinging second switch thorugh first switch. But there is error when accessing zynq.

Thanks