in core switch,i configured intervlan,intervlan is not working.
configured 2 vlans in core switch-data and voice and enable the ipforwarding also.
not working the intervlan.
Ranjith -- I realized that I forgot to add port 23 to Switch-2 configuration, so please disregard the first illsutration.... I've correct and added this second illustration.
Download this.jpg image to get more detail. This is just an example on how to setup the three independent switches. I'm showing that the L2 VLAN's (DATA and VOICE) are extended across all three switches, but only Switch-2 is doing the Inter-VLAN routing for the two subnets.