This object models one or more xPON interfaces or ONUs as specified by the ITU based PON standards. It does not address IEEE based PON standards (like EPON). An ONU performs tasks such as traffic classification, VLAN manipulation, GEM port mapping, aggregation and/or forwarding between one or more UNIs and one or more ANIs. {{numentries}} This object models one xPON interface or ONU as specified by the ITU based PON standards. Enables or disables this ONU. If disabled, the ONU should prevent user traffic from flowing, suppress notifications, and power down as much as possible. The textual name of the ONU as assigned by the CPE. This attribute identifies the version of the ONU as defined by the vendor. This parameter is based on ''Version'' from {{bibref|G.988|Section 9.1.1}}. This attribute may be used to identify the specific type of ONU. This parameter is based on ''Equipment ID'' from {{bibref|G.988|Section 9.1.2}}. {{numentries}} {{numentries}} {{numentries}} This table models the software images stored in the ONU. It is expected this table has two entries: the ONU normally creates two instances of the Software Image ME to model the 2 software images in the ONU. This object is based on {{bibref|G.988|Section 9.1.4}}. The ID as assigned by the CPE to this {{object}} entry. A string identifying the software version. This parameter is based on ''Version'' from {{bibref|G.988|Section 9.1.4}}. This parameter indicates whether or not the associated software image is committed. This parameter is based on ''Is committed'' from {{bibref|G.988|Section 9.1.4}}. This parameter indicates whether the associated software image is active ({{true}}) or inactive ({{false}}). This parameter is based on ''Is active'' from {{bibref|G.988|Section 9.1.4}}. This parameter indicates whether the associated software image is valid ({{true}}) or invalid ({{false}}). This parameter is based on ''Is valid'' from {{bibref|G.988|Section 9.1.4}}. Ethernet UNI table (a stackable interface object as described in {{bibref|TR-181i2|Section 4.2}}). This object models User Network Interfaces carrying Ethernet frames. An EthernetUNI can be a virtual or a physical UNI. If the ONU is managed via OMCI, an EthernetUNI has an associated service, which is either a VEIP (see {{bibref|G.988|Section 9.5.5}}) or a PPTP Ethernet UNI (see {{bibref|G.988|Section 9.5.1}}). If the associated service is a VEIP, the ONU shows a VEIP ME in the OMCI MIB. If it's a PPTP Ethernet UNI, the ONU shows a PPTP Ethernet UNI ME in the OMCI MIB. It is expected the associated service is a VEIP for a virtual UNI, and that it is a PPTP Ethernet UNI for a physical UNI. However, some network operators require that the ONU shows a PPTP Ethernet UNI ME instead of a VEIP ME in its OMCI MIB even if the EthernetUNI models a virtual UNI. Indicates whether this interface is enabled ({{true}}) or not ({{false}}). If the ONU is managed via OMCI, the interface is enabled if the OLT set the parameter ''Administrative state'' of the ME managing the associated service to 0. (The value 0 unlocks the functions performed by the ME.) The ME is either the VEIP ME (see {{bibref|G.988|Section 9.5.5}}) or the PPTP Ethernet UNI ME (see {{bibref|G.988|Section 9.5.1}}. This parameter is based on ''ifAdminStatus'' from {{bibref|RFC2863}}. The current operational state of the interface (see {{bibref|TR-181i2|Section 4.2.2}}). {{enum}} When {{param|Enable}} is {{false}} then {{param}} SHOULD normally be {{enum|Down}} (or {{enum|NotPresent}} or {{enum|Error}} if there is a fault condition on the interface). When {{param|Enable}} becomes {{true}} then {{param}} SHOULD change to {{enum|Up}} if and only if the interface is able to transmit and receive network traffic; it SHOULD change to {{enum|Dormant}} if and only if the interface is operable but is waiting for external actions before it can transmit and receive network traffic (and subsequently change to {{enum|Up}} if still operable when the expected actions have completed); it SHOULD change to {{enum|LowerLayerDown}} if and only if the interface is prevented from entering the {{enum|Up}} state because one or more of the interfaces beneath it is down; it SHOULD remain in the {{enum|Error}} state if there is an error or other fault condition detected on the interface; it SHOULD remain in the {{enum|NotPresent}} state if the interface has missing (typically hardware) components; it SHOULD change to {{enum|Unknown}} if the state of the interface can not be determined for some reason. If the ONU is managed via OMCI, then {{param}} can only be {{enum|Up}} if the ONU has been provisioned at OMCI level in such a way that this interface is able to pass traffic. This parameter is based on ''ifOperStatus'' from {{bibref|RFC2863}}. The textual name of the interface entry as assigned by the CPE. The accumulated time in {{units}} since the interface entered its current operational state. {{list}} {{reference|an interface object that is stacked immediately below this interface object}} See {{bibref|TR-181i2|Section 4.2.1}}. Note: it is expected that {{param}} will not be used: if {{object}} models a physical UNI, it represents a layer 1 interface; if {{object}} models a virtual UNI, it virtualizes a layer 1 interface. {{list}} {{reference}} References all associated ANI interfaces. An ONU is potentially capable of forwarding frames between a UNI and its associated ANI interfaces. This parameter defines such a relationship. However, the list does not mean that the forwarding is actually happening, or the forwarding policies have been provisioned, between the UNI and the associated ANI interfaces. For an ONU with a single TC layer device, the parameter value can be either empty for simplicity, or can be the path name of the associated ANI. For an ONU with multiple TC layer devices, this parameter value may have one or more path names. String to identify the associated service in the ONU management domain to the TR-181 management domain. If the ONU is managed via OMCI, it is recommended to format this string as "(service_type,MEID)", with service_type being an enumeration of ''VEIP'' or ''PPTPEthernetUNI'', and MEID the value of the attribute "Managed entity ID" of the ME instance managing the service associated with this EthernetUNI. Examples: * (VEIP,1025) * (PPTPEthernetUNI,257) An OSS (Operations Support System) having access to both the TR-181 and the OMCI domain can then find out which EthernetUNI instance represents a certain VEIP or PPTPEthernetUNI ME instance in the OMCI domain. String that provides an additional way to identify the associated service to the TR-181 management domain. If the ONU is managed via OMCI and if the service associated with this EthernetUNI is a VEIP, then the value of this parameter is the value of the attribute "Interdomain name" of the corresponding VEIP ME instance. Throughput statistics for this interface. The CPE MUST reset the interface's Stats parameters (unless otherwise stated in individual object or parameter descriptions) either when the interface becomes operationally down due to a previous administrative down (i.e. the interface's {{param|#.Status}} parameter transitions to a down state after the interface is disabled) or when the interface becomes administratively up (i.e. the interface's {{param|#.Enable}} parameter transitions from {{false}} to {{true}}). Administrative and operational interface status is discussed in {{bibref|TR-181i2|section 4.2.2}}. Transmit direction has PON as destination. Receive direction has PON as source. The total number of bytes transmitted out of the interface, including framing characters. The total number of bytes received on the interface, including framing characters. The total number of Ethernet frames transmitted out of the interface. The total number of Ethernet frames received on the interface. The total number of outbound Ethernet frames that could not be transmitted because of errors. The total number of inbound Ethernet frames that contained errors preventing them from being delivered to the TR-181 domain. The total number of Ethernet frames requested for transmission which were not addressed to a multicast or broadcast address at this layer, including those that were discarded or not sent. The total number of Ethernet frames, delivered by this interface to the TR-181 domain, which were not addressed to a multicast or broadcast address at this layer. The total number of outbound Ethernet frames which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space. The total number of inbound Ethernet frames which were chosen to be discarded even though no errors had been detected to prevent their being delivered. One possible reason for discarding such a packet could be to free up buffer space. The total number of Ethernet frames requested for transmission and which were addressed to a multicast address at this layer, including those that were discarded or not sent. The total number of received Ethernet frames, delivered by this interface to the TR-181 domain, which were addressed to a multicast address at this layer. The total number of Ethernet frames that the TR-181 domain requested for transmission and which were addressed to a broadcast address at this layer, including those that were discarded or not sent. The total number of received Ethernet frames, delivered by this interface to the TR-181 domain, which were addressed to a broadcast address at this layer. The total number of Ethernet frames received via the interface which were discarded because of an unknown or unsupported protocol. Access Node Interface (ANI) table. An ANI models the xPON MAC/PHY as defined in the ITU-T PON standards. This object is not an interface object as described in {{bibref|TR-181i2|Section 4.2}}, but it has many of the same core parameters as an interface object, and they follow largely the same conventions. The most important deviations are: * This object does not have a LowerLayers parameter. * The value LowerLayerDown is not a valid value for its Status parameter. Because it's not an interface object, it does not occur in the {{object|###.InterfaceStack}} table. Enables or disables the interface. If disabled, the device should force the ONU state of this ANI to O1 (Initial state). This parameter is based on ''ifAdminStatus'' from {{bibref|RFC2863}}. Note: forcing the state to O1 implies the device disables the TX laser of the associated transceiver(s). It's not required to disable the RX part of the transceivers as well. The current operational state of the interface. Although this object is not an interface object, it follows largely the conventions of {{bibref|TR-181i2|Section 4.2.2}}. The most important deviation is that LowerLayerDown is not a valid value. {{enum}} When {{param|Enable}} is {{false}} then {{param}} SHOULD normally be {{enum|Down}} (or {{enum|NotPresent}} or {{enum|Error}} if there is a fault condition on the interface). When {{param|Enable}} becomes {{true}} then {{param}} SHOULD change to {{enum|Up}} if and only if the interface is able to transmit and receive network traffic; more specifically, {{param}} should change to {{enum|Up}} if {{param|TC.ONUActivation.ONUState}} becomes O5; it SHOULD change to {{enum|Dormant}} if and only if the interface is operable but is waiting for external actions before it can transmit and receive network traffic (and subsequently change to {{enum|Up}} if still operable when the expected actions have completed); it SHOULD remain in the {{enum|Error}} state if there is an error or other fault condition detected on the interface; it SHOULD remain in the {{enum|NotPresent}} state if the interface has missing (typically hardware) components; it SHOULD change to {{enum|Unknown}} if the state of the interface can not be determined for some reason. This parameter is based on ''ifOperStatus'' from {{bibref|RFC2863}}. The textual name of the ANI entry as assigned by the CPE. The accumulated time in {{units}} since the interface entered its current operational state. PON mode, defines the detected or configured PON mode of the ANI. {{enum}} {{object|Transceiver}} has a parameter of the same name. For proper operation, the PON mode of the transceiver(s) corresponding to this ANI must be equal to the PON mode of this ANI. But a user might e.g. accidentally insert a G-PON SFP while the PON mode of the ANI is XGS-PON. {{numentries}} Throughput statistics for this interface. The CPE MUST reset the interface's Stats parameters (unless otherwise stated in individual object or parameter descriptions) either when the interface becomes operationally down due to a previous administrative down (i.e. the interface's {{param|#.Status}} parameter transitions to a down state after the interface is disabled) or when the interface becomes administratively up (i.e. the interface's {{param|#.Enable}} parameter transitions from {{false}} to {{true}}). Administrative and operational interface status is discussed in {{bibref|TR-181i2|section 4.2.2}}. Transmit direction has PON as destination. Receive direction has PON as source. The total number of bytes transmitted out of the interface, including framing characters. The total number of bytes received on the interface, including framing characters. The total number of Ethernet frames transmitted out of the interface. The total number of Ethernet frames received on the interface. The total number of outbound Ethernet frames that could not be transmitted because of errors. The total number of inbound Ethernet frames that contained errors preventing them from being forwarded to the UNI(s). The total number of Ethernet frames requested for transmission which were not addressed to a multicast or broadcast address at this layer, including those that were discarded or not sent. The total number of Ethernet frames, forwarded by this interface to the UNI(s), which were not addressed to a multicast or broadcast address at this layer. The total number of outbound Ethernet frames which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space. The total number of inbound Ethernet frames which were chosen to be discarded even though no errors had been detected to prevent their being delivered. One possible reason for discarding such a packet could be to free up buffer space. The total number of Ethernet frames requested for transmission and which were addressed to a multicast address at this layer, including those that were discarded or not sent. The total number of received Ethernet frames, forwarded by this interface to the UNI(s), which were addressed to a multicast address at this layer. The total number of Ethernet frames requested for transmission on the PON and which were addressed to a broadcast address at this layer, including those that were discarded or not sent. The total number of received Ethernet frames, forwarded by this interface to the UNI(s), which were addressed to a broadcast address at this layer. The total number of Ethernet frames received via the interface which were discarded because of an unknown or unsupported protocol. This object represents an ITU-T PON TC layer device. This object shows info related to the activation of this ANI by an OLT. ONU activation state. {{enum}} See: * {{bibref|G.9807.1|Section C.12}} * {{bibref|G.984.3|Section 10}} * {{bibref|G.987.3|Section 12}} * {{bibref|G.989.3|Section 12}} Identifies the vendor of the ONU. See {{bibref|G.988|Section 9.1.1}}. Represents the combination of the Vendor-ID and the Vendor-specific serial number (VSSN). The parameter shows the serial number in a human readable format. Example: if the vendor ID is ABCD and the VSSN encodes the number 1234568, the value of this parameter is ABCD12345678. See {{bibref|G.988|Section 9.1.1}}. Identifier that the OLT assigns to this ANI during the activation. See: * {{bibref|G.9807.1|Section C.6.1.5.6}} * {{bibref|G.984.3|Section 5.5.2}} * {{bibref|G.987.3|Section 6.4.2}} * {{bibref|G.989.3|Section 6.1.5.6}} This object shows info related to authentication of the ONU to the OLT. All ITU based PON standards specify authentication by PLOAM password or registration ID. See: * {{bibref|G.9807.1|Section C.15.2.1}} * {{bibref|G.984.3|Section VI.2}} * {{bibref|G.987.3|Section 15.2.1}} * {{bibref|G.989.3|Section 15.2.1}} All those standards mention that a method to enter the password is beyond their scope. This parameter and the parameter {{param|HexadecimalPassword}} standardize a method to enter the password. In case of G-PON as PON mode, the password can be up to 10 bytes long. See {{bibref|G.984.3|Section 9.2.4.2}}. For the other PON modes, the password can be up to 36 bytes long. See: * {{bibref|G.9807.1|Section C.11.3.4.2}} * {{bibref|G.987.3|Section 11.3.4.2}} * {{bibref|G.989.3|Section 11.3.4.2}} If {{param|HexadecimalPassword}} is {{false}}, the password is in ASCII format. Then all 95 printable characters with decimal codes in the range 32 to 126 inclusive are allowed. Each character corresponds with 1 byte in the password. If {{param|HexadecimalPassword}} is {{true}}, the password is in hexadecimal format. Then only the characters 0 to 9, a to f, and A to F are allowed. Each character corresponds with 1 nibble in the password. Depending on the value of {{param|HexadecimalPassword}} and the PON mode, a different number of characters are applicable. If {{param|HexadecimalPassword}} is {{false}}: * In case of G-PON as PON mode, only the 1st 10 characters are applicable. * In case of another PON mode, only the 1st 36 characters are applicable. If {{param|HexadecimalPassword}} is {{true}}: * In case of G-PON as PON mode, the 1st 20 characters are all relevant. The other characters are not applicable. * In case of another PON mode, all 72 characters are relevant. This parameter is set to {{empty}} if no authentication via a password is required. If {{false}}, {{param|Password}} is in ASCII format. If {{true}}, {{param|Password}} is in hexadecimal format. See {{param|Password}} for more info. Performance monitoring (PM) counters. PHY PM. The number of bytes that were corrected by the FEC function. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Count of FEC codewords that contained errors but were corrected by the FEC function. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Count of FEC codewords that contained errors and could not be corrected by the FEC function. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Count of total received FEC codewords. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} HEC error in any of the fields of PSBd. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} HEC errors received in the DS XGTC or FS header. This counter is called: * "FS HEC error count" in {{bibref|G.9807.1|Table C.14.1}} and {{bibref|G.989.3|Table 14-1}}. * "XGTC HEC error count" in {{bibref|G.987.3|Table 14-1}}. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} ONU could not transmit because the specified burst profile was not known. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} (X)GEM PM. Total number of (X)GEM frames transmitted. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Total number of (X)GEM frames received. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} XGEM frame header HEC errors. Number of events involving loss of XGEM channel delineation. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} XGEM key errors. XGEM frames discarded because of unknown or invalid encryption key. Examples include: no unicast or broadcast key established for specified key index, key index indicating encrypted XGEM frame on a XGEM port that is not provisioned for encryption, key index indicating upstream encryption on a XGEM port that is provisioned for downstream encryption only, or invalid key index (11). This count is included in {{param|FramesReceived}}. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} PLOAM PM. PLOAM MIC errors. Counter of received PLOAM messages with MIC errors. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Downstream PLOAM message count. Count of PLOAM messages sent by OLT, received by ONU, either broadcast or directed to the specific ONU-ID. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Count of Ranging_Time PLOAM messages sent by OLT. It provides a base for transmission time drift estimation. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Upstream PLOAM message count. Count of messages (other than Acknowledgement) sent by ONU to OLT. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} OMCI PM. OMCI baseline message count. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} OMCI extended message count. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Count of received OMCI messages with MIC errors. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Info about the GEM ports of this ANI. {{numentries}} GEM port table. Each entry gives info about a(n) (X)GEM port. Identifies a GEM port. See: * {{bibref|G.9807.1|Section C.6.1.5.8}} * {{bibref|G.984.3|Section 5.5.5}} * {{bibref|G.987.3|Section 6.4.4}} * {{bibref|G.989.3|Section 6.1.5.8}} Type of connection this GEM port is used for. {{enum}} See: {{bibref|G.988|Section 9.2.3}}. GEM port type. Performance monitoring (PM) counters for this (X)GEM port. (X)GEM frames transmitted by this (X)GEM port. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} (X)GEM frames received by this (X)GEM port. See: * {{bibref|G.9807.1|Table C.14.1}} * {{bibref|G.987.3|Table 14-1}} * {{bibref|G.989.3|Table 14-1}} Performance thresholds. Signal fail (SF) threshold. This parameter specifies the downstream bit error rate (BER) threshold to detect the SF alarm. When this value is y, the BER threshold is 10^–y. This parameter is based on ''Signal fail (SF) threshold'' from {{bibref|G.988|Section 9.2.1}}. Signal degrade (SD) threshold. This parameter specifies the downstream BER threshold to detect the SD alarm. When this value is x, the BER threshold for SD is 10^–x . The SD threshold must be lower than the SF threshold; i.e., x > y. This parameter is based on ''Signal degrade (SD) threshold'' from {{bibref|G.988|Section 9.2.1}}. Alarms at TC level for this ANI. Loss of signal. See {{bibref|G.984.3|Section 11.1.2}}. Loss of frame. See {{bibref|G.984.3|Section 11.1.2}}. Signal failed. See {{bibref|G.984.3|Section 11.1.2}}. Signal degraded. See {{bibref|G.984.3|Section 11.1.2}}. Loss of GEM channel delineation. See {{bibref|G.984.3|Section 11.1.2}}. Transmitter failure. See {{bibref|G.984.3|Section 11.1.2}}. Start-up failure. See {{bibref|G.984.3|Section 11.1.2}}. Message error message. See {{bibref|G.984.3|Section 11.1.2}}. Deactivate ONU-ID. See {{bibref|G.984.3|Section 11.1.2}}. Disabled ONU. See {{bibref|G.984.3|Section 11.1.2}}. Link mismatching. See {{bibref|G.984.3|Section 11.1.2}}. When the ONU receives a PEE message. See {{bibref|G.984.3|Section 11.1.2}}. Remote defect indication. See {{bibref|G.984.3|Section 11.1.2}}. Loss of downstream syncronization. See {{bibref|G.9807.1|}}. The ANI behaves rogue: it is not transmitting in a manner consistent with parameters specified in the ITU-T PON standards. Hence it can threaten all upstream transmissions on the PON, causing interference and disrupting communications of other ONUs on the PON. An example of rogue behavior is transmitting in the wrong timeslot. See: * {{bibref|G.9807.1|Section C.19}} * {{bibref|G.989.3|Section 19}} Transceiver table. Each entry models a PON transceiver. The ID as assigned by the CPE to this Transceiver entry. Transceiver type. Allowed values are given by {{bibref|SFF-8024|Table 4-1}}. Vendor name. See {{bibref|SFF-8472|Table 4-1}}. Vendor part number. See "Vendor PN" in {{bibref|SFF-8472|Table 4-1}}. Vendor revision. See "Vendor rev" in {{bibref|SFF-8472|Table 4-1}}. PON mode, reports the PON mode of the transceiver. Connector type. Lucent Connector, Little Connector, or Local Connector. Subscriber connector, square connector or standard connector. Straight tip connector. Ferrule Connector or Fiber Channel. Mechanical Transfer Registered Jack. Nominal data rate downstream in {{units}}. Nominal data rate upstream in {{units}}. Measured RX power in {{units}}. Measured TX power in {{units}}. Measured supply voltage in {{units}}. Measured bias current in {{units}}. Measured temperature in {{units}}. A value of -274 (which is below absolute zero) indicates a good reading has not been obtained.