Yes IIT Bombay has enabled "eduroam" wireless network in there, Visitors to IIT Bombay from Europe, Australia, and some countries in Asia will be able to connect to IITB WiFi network with their respective university's login credentials. IITB Faculty need not create special LDAP IDs for them.

Here is a quick setup guide (very similar to IITB-Wireless connection):
Field Values
Network Name -- SSID eduroam
Security Type WPA2 Enterprise
Username ldapusername[at]iitb.ac.in
Password ldappassword
EAP method PEAP
Phase 2 authentication MSCHAPV2

IIT Bombay Connecting to eduroam -- Android devices

Connecting Android devices to eduroam

1. Switch your wifi on and select eduroam network.

2. Please keep EAP method as "PEAP" and Phase 2 authentication as "MSCHAPV2" in the pop up dialog

3. Enter your username (name[at]iitb.ac.in) and password (These options may be there in the same dialog or may be present in the next dialog)

4. You should now be able to connect to the eduroam service.

Address

Indian Institute of Technology Bombay
IIT Area, Powai
Mumbai, Maharashtra 400076