Hi Rajesh,
There is 15 Aruba IAPs, their cluster communication and management vlan is 20. Yes there are 4 SSIDs that they broadcast. One named "ACU" on vlan 20, one named "INFO" on vlan 21, one named "VOIP" on vlan 61 and last one is "TEST" on vlan 60.
Regardless of Aruba APs, I also test by hooking up a PC to a switch port with vlan 60. It gets correct IP adress and gateway information via DHCP so its traffic is routed to EWC vlan 60 ip. But even this does not work. It does not redirect to Captive Portal Page.
edit: About the links you provided, it is not what I try to do. I already use CP on Aruba APs. But my purpose was to broadcast an Open guest SSID on Aruba and use EWC 3rd party captive portal feature. So I can see the users statistics on EWC.
PS: "As a summary there are two problems. First changing anything in 3rd party WLAN settings breaks all other WLAN communications and all clients loses connectivity. Second the 3rd party captive portal never shows up even it is configured as suggested."
If this confused you, I mean "changing 3rd party WLAN settings under EWC, breaks all SSIDs on EWC. So all clients connected to Extreme APs looses connection.
I hope it is clear for you now.
Thanks,
Rahman