Yes, it can.
You may use:
MAC-address can be seen at pppoe-description attribute,
IP-address at Framed-IP-Address
Vlan ID at NAS-Port-Id.
You should refer to "broadband access Guide"->"Managing Radius and TACACS+" ->Configuring Radius Attributes.
For examples, this is a packet, which is send to Radius during authentication:
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: ACCESS-REQUEST attributes (default)
WARNING dropped log messages: 1
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: username attr added: test
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: acct-session-id attr added: erx atm 2/0.42:100.103:0006293809
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: user-password attr added: <value withheld>
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: service-type attr added: 2
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: framed-protocol attr added: 1
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: pppoe-description (vsa) attr added: pppoe 12:34:56:78:9a:bc
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: calling-station-id attr added: #ERX-310-41-e1-b0#this is a description#100#103
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: connect-info attr added: speed:UBR:12000
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: nas-port-type attr added: 10
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: nas-port attr added: 20640067
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: nas-port-id attr added: atm 2/0.42:100.103
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: nas-ip-address attr added: xxxxxxx
DEBUG 12/02/2008 16:14:57 MSK radiusSendAttributes: nas-identifier attr added: ERX-310-41-e1-b0