Attributes are configured in /etc/freeradius/ladp.attrmap:
## Attributes for Extreme Networks Vendor-Specific RADIUS replyItem Extreme-Security-Profile radiusExtremeSecurityProfile replyItem Extreme-Netlogin-Vlan-Tag radiusExtremeNetloginVlanTag replyItem Extreme-Netlogin-Extended-Vlan radiusExtremeNetloginExtendedVlan