L2AccessPDU.asn

L2AccessPDU
{itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulIntercept(2)
li-ps(5) l2Access(4) version8(8)}

DEFINITIONS IMPLICIT TAGS ::=
BEGIN

-- ============================
-- Object Identifier Definition
-- ============================

l2AccessPDUObjId RELATIVE-OID   ::= {li-ps(5) l2Access(4) version8(8)}
l2IRIObjId RELATIVE-OID         ::= {l2AccessPDUObjId iRI(1)}
l2CCObjId RELATIVE-OID          ::= {l2AccessPDUObjId cC(2)}
l2IRIOnlyObjId RELATIVE-OID     ::= {l2AccessPDUObjId iRIOnly(3)}

    -- definitions are relative to
    -- {itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulintercept(2)}


-- ==========================
-- L2 Communications Contents
-- ==========================

L2CC        ::= SEQUENCE
{
    l2CCObjId               [0] RELATIVE-OID,
    l2CCContents            [1] CHOICE
    {
        l2TP                    [1] OCTET STRING,
            -- The L2TP protocol is used
        l2F                     [2] OCTET STRING,
            -- The L2F protocol is used
        pPTP                    [3] OCTET STRING,
            -- The PPTP protocol is used
        pPP                     [4] OCTET STRING,
            -- The PPP protocol is used
        ethernet                [5] OCTET STRING,
            -- The ethernet protocol is used
        ...,
        l2ATM2684               [6] OCTET STRING,
            -- The protocol RFC 2684, method "LLC Encapsulation for Bridged Protocols" [16] is used
        l2FR2427                [7] OCTET STRING,
            -- The protocol RFC 2427 "Multiprotocol Interconnect over Frame Relay" [18] is used
        truncatedL2TP           [8] L2TruncatedDatagram,
            -- truncated l2TP[1]
        truncatedL2F            [9] L2TruncatedDatagram,
            -- truncated l2F[2]
        truncatedPPTP           [10] L2TruncatedDatagram,
            -- truncated pPTP[3]
        truncatedPPP            [11] L2TruncatedDatagram,
            -- truncated pPP[4]
        truncatedEthernet       [12] L2TruncatedDatagram,
            -- truncated ethernet[5]
        truncatedL2ATM2684      [13] L2TruncatedDatagram,
            -- truncated l2ATM2684[6]
        truncatedL2FR2427       [14] L2TruncatedDatagram
            -- truncated l2FR2427[7]
    }
}

L2TruncatedDatagram ::= SEQUENCE
{
    truncatedDatagram   [0] OCTET STRING,
    originalLength      [1] INTEGER,
    ...
}

-- ===================================================
-- Intercept-related information for general L2-Access
-- ===================================================

L2IRI           ::= SEQUENCE
{
    l2IRIObjId          [0] RELATIVE-OID,
    l2IRIContents       [1] L2IRIContents,
    ...
}

L2IRIContents           ::= SEQUENCE
{
    accessEventType             [0] AccessEventType,
    internetAccessType          [2] InternetAccessType OPTIONAL,
    targetNetworkID             [5] UTF8String (SIZE (1..128)) OPTIONAL,
        -- Target network ID (e.g. MAC address, PSTN number, additional information from
        -- network elements)
    targetCPEID                 [6] UTF8String (SIZE (1..128)) OPTIONAL,
        -- CPEID (e.g. Relay Agent info, computer name)
    targetLocation              [7] UTF8String (SIZE (1..64))OPTIONAL,
        -- <for further study>
    nASPortNumber               [8] INTEGER (0..4294967295) OPTIONAL,
        -- The NAS port number used by the target
    callBackNumber              [9] UTF8String (SIZE (1..20)) OPTIONAL,
        -- The number used to call-back the target
    startTime                   [10] GeneralizedTime OPTIONAL,
        -- The start date-time of the session or lease
    endTime                     [11] GeneralizedTime OPTIONAL,
            -- The end date-time of the session or lease
    endReason                   [12] EndReason OPTIONAL,
        -- The reason for the session to end
    octetsReceived              [13]    INTEGER (0..18446744073709551615) OPTIONAL,
        -- The number of octets the target received
    octetsTransmitted           [14]    INTEGER (0..18446744073709551615) OPTIONAL,
        -- The number of octets the target transmitted
    rawAAAData                  [15]    OCTET STRING OPTIONAL,
        -- Content of the raw AAA record
    ...,
    authenticationType          [16] AuthenticationType OPTIONAL
        -- Field used to identify the authentication type to assist with LEMF data validation
}

AccessEventType         ::= ENUMERATED
{
    accessAttempt(0),
        -- A target requests access to the IAS
    accessAccept(1),
        -- IAS access is granted to the target, the session begins
    accessReject(2),
        -- IAS access is refused to the target
    accessFailed(3),
        -- The accessAttempt timed-out or failed otherwise
    sessionStart(4),
        -- A target starts using the IAS; not in use anymore from version 4(4).
    sessionEnd(5),
        -- A target stops using the IAS; not in use anymore from version 4(4).
    interimUpdate(6),
        -- Intermediate status report on service status or usage
    unknown(7),
    ...,
    startOfInterceptionWithSessionActive(8),
        -- LI is started on a target who already has an active session
    accessEnd(9),
        -- A target stops using the IAS, the session ends.
    endOfInterceptionWithSessionActive(10)
        -- LI is ended on a target who still has an active session
}

InternetAccessType      ::= ENUMERATED
{
    undefined(0),
    dialUp(1),
        -- IAS via DialUp access
    xDSL(2),
        -- IAS via DSL access
    cableModem(3),
        -- IAS via Cable access
    lAN(4),
        -- IAS via LAN access
    ...,
    wirelessLAN(5),
        -- IAS via Wireless LAN access
    fTTx(6),
        -- IAS via Fiber access
    wIMAX-HIPERMAN(7),
        -- IAS via WIMAX/HIPERMAN (fixed access)
    satellite(8)
        -- IAS via Satellite access
        -- (when it is not covered by any 3GPP or ETSI mobile Lawful Interception specifications)
}

EndReason           ::= ENUMERATED
{
    undefined(0),
    regularLogoff(1),
        -- The target logged off
    connectionLoss(2),
        -- The connection was lost
    connectionTimeout(3),
        -- The connection timed-out
    leaseExpired(4),
        -- The DHCP lease expired
    ...
}

AuthenticationType ::= ENUMERATED
{
    unknown(0),
        -- AAA function for the target service is unknown
    static(1),
        -- The target service is assigned a static IP address & no AAA expected
    radiusAAA(2),
        -- AAA function for the target service is provided by RADIUS
    dhcpAAA(3),
        -- AAA function for the target service is provided by DHCP
    diameterAAA(4),
        -- AAA function for the target service is provided by DIAMETER
    ...
}


-- =====================================================
-- Intercept-related information for IRI-Only intercepts
-- =====================================================

L2IRIOnly       ::= SEQUENCE
{
    l2IRIOnlyObjId                  [0] RELATIVE-OID,
    l2protocolInformation       [2] L2ProtocolInformation,
    l2AggregatedNbrOfPackets    [3] INTEGER OPTIONAL,
    l2AggregatedNbrOfBytes      [4] INTEGER OPTIONAL,
    ...
}

L2ProtocolInformation       ::= ENUMERATED
{
    l2ProtocolL2tp(1),
        -- The L2TP protocol is used
    l2ProtocolL2f(2),
        -- The L2F protocol is used
    l2ProtocolPptp(3),
        -- The PPTP protocol is used
    l2ProtocolPpp(4),
        -- The PPP protocol is used
    ethernetProtocol(5),
        -- The ethernet protocol is used
    undefined(6),
    ...,
    l2ProtocolATM2684(7),
        -- The protocol RFC 2684, method "LLC Encapsulation for Bridged Protocols" [16] is used
    l2ProtocolFR2427(8)
        -- The protocol RFC2427 "Multiprotocol Interconnect over Frame Relay" [18] is used
}

END -- end of L2AccessPDU