This MIB is to support the CDMA PDSN (Packet Data Serving
Node) feature.  A CDMA2000 network supports wireless data
communication through 3G CDMA radio access technology and
3G A10/A11 interface.  PDSN acts as a foreign agent that
establishes, maintains and terminates the link layer to a
mobile station.
        
The high level architecture of a third generation CDMA2000
network is shown below:
        
     +========+=+            +=========+          +=========+
     | RAdio  |P|            |         |   Data   |  Home   |
     | Network|C|==A10/A11==-|  PDSN   |===Core===| Network |
     |  (RAN) |F| Interface  |         |  Network |         |
     +========+=+            +=========+   (DCN)  +=========+
        /|\                 Foreign Agent         Home Agent
         |                     (FA)                  (HA)
         |   Visited Access
         |  Provider Network               
         |                                 
        \|/                                
     +========+
     | Mobile |
     | Station|
     |  (MS)  |
     +========+
        
The following diagram illustrates protocols usage by the
CDMA2000 network elements:
        
  MS ===== RAN ======== PDSN ======== DCN ====== Home Network
  |        |  A10/A11   |                        |
  |        +=signaling==+                        |
  |                     |                        |
  |                     +...L2TP/L2F tunnelling..+
  |                     |                        |
  +======== PPP ========+                        |
  |                     |                        |
  |                     +..Mobile IP tunnelling..+
  |                                              |
  |                                              |
  |                                              |
  +=================Mobile IP====================+
  |                                              |
  |                                              |
  +======================data====================+
        
        
The CDMA PDSN MIB provides operational information for a 
CDMA PDSN implementation.  The following areas are managed:
        
    1) Global PDSN information.  This area contains generic
       information such as the number of active/failed
       sessions, PDSN hostname.
        
    2) PDSN session information.  This area contains 
       details about PPP sessions maintained by the
       PDSN router and other related information such as
       flows or PCF. 
        
    3) Failure notification.  This area contains details
       of notifications sent to network management
       applications in case of session failure.
        
        
Acronyms and terms:
        
  A10/A11         A10 interface is a virtual interface
  interface       used for transporting data between
                  the RAN and the PDSN.
        
                  A11 interface is the signaling
                  protocol used for maintaining a
                  logical connection between the RAN
                  and PDSN.
        
  BSID            Base Station Identifier
        
  CANID           Current Access Network Identifier
          
  CDMA            Code Division Multiple Access
        
  CVSE            Customer/Vendor Specific Extension
        
  DCN             Data Core Network
        
  ESN             Electronic Serial Number
        
  FA              Foreign Agent
        
  Foreign Agent   A router on a mobile node's visited
                  network which provides routing
                  services to the mobile node while
                  registered.  The foreign agent
                  delivers datagrams to the mobile
                  node that were tunneled by the
                  mobile node's home agent.
                  For datagrams sent by a mobile node,
                  the foreign agent may serve as a
                  default router for registered mobile
                  nodes.  Refer to RFC 2002 for more
                  details.
        
  GRE             Generic Routing Encapsulation. Refer to
                  RFC 1701 for more details.
        
  HA              Home Agent
        
  Home Agent      A router on a mobile node's home
                  network which tunnels datagrams for
                  delivery to the mobile node when it
                  is away from home, and maintains
                  current location information for the
                  mobile node.  Refer to RFC 2002 for
                  more details.
        
  IMSI            International Mobile Station Identifier
        
  IPCP            Internet Protocol Control Protocol
          
  IS              In service
        
  IRM             International Roaming MIN
        
  LCP             Link Control Protocol
        
  MC              Mobile Client
        
  MIN             Mobile Identifier Number
        
  MN              Mobile Node
        
  Mobile Client   A component which can interact with
                  MoIP entities such as Foreign Agent
                  and Home Agent.
        
  Mobile IP       Protocol enhancements that allow
                  transparent routing of IP datagrams
                  to mobile nodes.
                  Refer to RFC 2002 for more details.
        
  Mobile Station/ A host or router that changes its 
  Mobile Node     point of attachment from one 
                  network or subnetwork to another.
                  A mobile node may change its 
                  location without changing its
                  IP address.
        
  MoIP            Mobile IP
        
  MSID            Mobile Station Identifier
        
  MS              Mobile Station
          
  NAI             Network Access Identifier   
         
  OOS             Out of service
        
  PANID           Previous Access Network Identifier
          
  PCF             Packet Control Function
        
  PDSN            Packet Data Serving Node
        
  PDSN flow       A conversation between one user
                  (identified by an IP address) and
                  a HA using a PDSN session.
        
  PDSN session    A PPP connection between a MS and
                  the PDSN.  One session may contain
                  one or multiple PDSN flows.
        
  PPPoGRE         Point-to-Point over 
                  Generic Routing Encapsulation
        
  PPPoHDLC        Point-to-Point over
                  High Level Data Link Control
        
  Proxy           Mechanism used by PDSN to provide
  mobile IP       MoIP services to a MS which does
                  not implement a mobile client. PDSN
                  will be the proxy MC for the MS.
        
  RAN/RN          Radio Network
        
  RNPDIT          Radio Network Packet Data 
                  Inactivity Timer
        
  RP              Radio Packet
          
  SDB             Short Data Burst
        
  Simple IP       IP routing used by a MS when MoIP
                  services are not needed.
        
  SO/So           Service Option.
                  The Service Option is a parameter 
                  that specifies the air interface 
                  between MS and RN for packet 
                  data service.
        
  SPI             Security Parameter Index.