5.41 NAS-Port-Type

5.41. NAS-Port-Type

Description

  This Attribute indicates the type of the physical port of the NAS
  which is authenticating the user.  It can be used instead of or in
  addition to the NAS-Port (5) attribute.  It is only used in
  Access-Request packets.  Either NAS-Port (5) or NAS-Port-Type or
  both SHOULD be present in an Access-Request packet, if the NAS
  differentiates among its ports.

A summary of the NAS-Port-Type Attribute format is shown below. The fields are transmitted from left to right.

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

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Value +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Value (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Type

  61 for NAS-Port-Type.

Length

  6

Value

  The Value field is four octets.  "Virtual" refers to a connection
  to the NAS via some transport protocol, instead of through a
  physical port.  For example, if a user telnetted into a NAS to

authenticate himself as an Outbound-User, the Access-Request might include NAS-Port-Type = Virtual as a hint to the RADIUS server that the user was not on a physical port.

  0       Async
  1       Sync
  2       ISDN Sync
  3       ISDN Async V.120
  4       ISDN Async V.110
  5       Virtual
  6       PIAFS
  7       HDLC Clear Channel
  8       X.25
  9       X.75
  10      G.3 Fax
  11      SDSL - Symmetric DSL
  12      ADSL-CAP - Asymmetric DSL, Carrierless Amplitude Phase
          Modulation
  13      ADSL-DMT - Asymmetric DSL, Discrete Multi-Tone
  14      IDSL - ISDN Digital Subscriber Line
  15      Ethernet
  16      xDSL - Digital Subscriber Line of unknown type
  17      Cable
  18      Wireless - Other
  19      Wireless - IEEE 802.11

  PIAFS is a form of wireless ISDN commonly used in Japan, and
  stands for PHS (Personal Handyphone System) Internet Access Forum
  Standard (PIAFS).