Hafiz,
EXOS v12.0 does support the advertisement of management address information through LLDP. Now, you must understand that this IP address is the one configured in the mgmt vlan. If you don't have al IP address configured for the mgmt vlan, then the switch will send the system MAC address instead...
Then, the show lldp neighbors detailed command will show the management address of each neighbor.
lab0-sw2.4 # show lldp neighbors detailed
-----------------------------------------------------------------------------
LLDP Port 2 detected 1 neighbor
Neighbor: 00:01:30:DF:00:01/1, age 9 seconds
- Chassis ID type: MAC address (4)
Chassis ID : 00:01:30:DF:00:01
- Port ID type: ifName (5)
Port ID : "1"
- Time To Live: 120 seconds
- Port Description: ""
- System Name: "lab0-sw1"
- System Description: "ExtremeXOS (Summit-PC) version 16.1.1.4 16.1.1.4 \
by release-manager on Fri Jun 12 17:09:43 EDT 201\
5"
- System Capabilities : "Bridge, Router"
Enabled Capabilities: "Bridge"
- Management Address Subtype: IPv4 (1)
Management Address : 172.16.56.11
Interface Number Subtype : ifIndex (2)
Interface Number : 1000018
Object ID String : "null"
lab0-sw2.5 #