Sorry Vikrant,I don't know detail right now, I have to refer to documents, but I do know that you have to use ip-helper command on router interface or on router to which your switch is connected, and also on every router in between.DN

Hi vikram,I am not master about all this stuff, but I do know that for voice vlan when switches request ip address from dhcp pool, it broadcast the request and that is put down by router, so have you try to use ip-helper address command on router and...