about /usr/local/sbin/checkrad

[Tseveendorj]

Hello,

Do I understand right or not about checkrad? Please drive me right 
direction.

radius# checkrad
Usage: checkrad nas_type nas_ip nas_port login session_id


What is nas_port ? is it mean 1645, 1646 ?
I found the session_id from cisco router with following command

hostname#sh pppoe session all
Total PPPoE sessions 3


*session id: 184*
local MAC address: 001d.46c7.2630, remote MAC address: 00e0.a666.51eb
virtual access interface: Vi2.2, outgoing interface: Gi0/0.1
    206389 packets sent, 185625 received
    246455857 bytes sent, 20392801 received

is it ?

Best regards,
Tseveen.