NAS-Port Parser

Starting in ComOS version 4.1 for the PM4 the NAS-Port specifies the slot, line, and channel a call came in on instead of just the port. This information is encoded into a 32bit number.

The NAS-Port number can be found in the detail files of a RADIUS server.

NAS-Port:


NAS-Port Number Format 

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |      Unused (zeros)               | Slot  |   Line  | Channel |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Example of NAS-Port in detail file

Mon Jan 18 09:22:37 1999
        Acct-Session-Id = "012D000003"
        User-Name = "tc1"
        NAS-IP-Address = 192.168.111.25
        NAS-Port = 1025
        NAS-Port-Type = 5
        Acct-Status-Type = Stop
        Acct-Session-Time = 57
        Acct-Authentic = RADIUS
        Connect-Info = "9600 LAPM/V42BIS"
        Acct-Input-Octets = 67
        Acct-Output-Octets = 2285
        Called-Station-Id = "4609993"
        Calling-Station-Id = "9254600115"
        Acct-Terminate-Cause = User-Request
        LE-Terminate-Detail = "User Request - Normal LAPM Disconnect"
        Service-Type = Login-User
        Login-Service = Telnet
        Login-IP-Host = 149.198.1.70
        Acct-Delay-Time = 0
        Timestamp = 916680157
Written by John Storms