MPLS-LPS-MIB

TEXTUAL-CONVENTION

This command allows a user to perform any action over a protection domain. If the protection command cannot be executed because a request of equal or higher priority is in effect, an inconsistentValue error is returned. The command values are as follows: noCmd This value should be returned by a read request when no command has been written to the object in question since initialization. This value may not be used in a write operation. If noCmd is used in a write operation, a wrongValue error is returned. clear Clears all of the commands listed below for the protection domain. lockoutOfProtection Prevents switching traffic to the protection path. forcedSwitch Switches traffic from the working path to the protection path. manualSwitchToWork Switches traffic from the protection path to the working path. manualSwitchToProtect Switches traffic from the working path to the protection path. exercise Used to verify the correct operation of the PSC communication and the integrity of the protection path. This command is not applicable to the PSC mode. freeze This command freezes the protection state and is a local command that is not signaled to the remote node. This command is not applicable to the PSC mode. clearfreeze Clears the local freeze. This command is not applicable to the PSC mode.

TEXTUAL-CONVENTION

This textual convention describes an object that stores the Fault Path (FPath) field and Data Path (Path) field of the PSC control packet. FPath is located in the first octet, and Path is located in the second octet. The value and the interpretation of the FPath field are as follows: 2-255 for future extensions 1 the anomaly condition is on the working path 0 the anomaly condition is on the protection path The value and the interpretation of the Path field are as follows: 2-255 for future extensions 1 protection path is transporting user data traffic 0 protection path is not transporting user data traffic.

TEXTUAL-CONVENTION

This textual convention describes an object that stores the PSC Request field of the PSC control packet. The values are as follows: noRequest No Request doNotRevert Do-not-Revert reverseRequest Reverse Request exercise Exercise waitToRestore Wait-to-Restore manualSwitch Manual Switch signalDegrade Signal Degrade (SD) signalFail Signal Fail (SF) forcedSwitch Forced Switch lockoutOfProtection Lockout of Protection.

TEXTUAL-CONVENTION

This textual convention describes an object that stores the current state of the PSC state machine. The values are as follows: normal Normal state. unavLOlocal Unavailable state due to local LO command. unavSFPlocal Unavailable state due to local SF-P. unavSDPlocal Unavailable state due to local SD-P. unavLOremote Unavailable state due to remote LO message. unavSFPremote Unavailable state due to remote SF-P message. unavSDPremote Unavailable state due to remote SD-P message. protfailSFWlocal Protecting Failure state due to local SF-W. protfailSDWlocal Protecting Failure state due to local SD-W. protfailSFWremote Protecting Failure state due to remote SF-W message. protfailSDWremote Protecting Failure state due to remote SD-W message. switadmFSlocal Switching Administrative state due to local FS command. Same as Protecting Administrative state due to local FS command in the PSC mode. switadmMSWlocal Switching Administrative state due to local MS-W command. switadmMSPlocal Switching Administrative state due to local MS-P command. Same as Protecting Administrative state due to local MS command in the PSC mode. switadmFSremote Switching Administrative state due to remote FS message. Same as Protecting Administrative state due to remote FS message in the PSC mode. switadmMSWremote Switching Administrative state due to remote MS-W message. switadmMSPremote Switching Administrative state due to remote MS-P message. Same as Protecting Administrative state due to remote MS message in the PSC mode. wtr Wait-to-Restore state. dnr Do-not-Revert state. exerLocal Exercise state due to local EXER command. exerRemote Exercise state due to remote EXER message.

OBJECT-IDENTITY

OBJECT-IDENTITY

OBJECT-TYPE

This object contains an unused value for mplsLpsConfigDomainIndex, or a zero to indicate that the number of unassigned entries has been exhausted. Negative values are not allowed, as they do not correspond to valid values of mplsLpsConfigDomainIndex.

OBJECT-TYPE

This table lists the MPLS-TP linear protection domains that have been configured on the system. An entry is created by a network operator who wants to run the MPLS-TP linear protection protocol for the protection domain.

OBJECT-TYPE

A conceptual row in the mplsLpsConfigTable.

OBJECT-TYPE

Index for the conceptual row identifying a protection domain. Operators should obtain new values for row creation in this table by reading mplsLpsConfigDomainIndexNext. When the value of this object is the same as the value of mplsLpsMeConfigDomain, the mplsLpsMeConfigDomain is defined as either the working path or the protection path for this protection domain.

OBJECT-TYPE

Textual name that represents the MPLS-TP linear protection domain. It facilitates easy administrative identification of each protection domain.

OBJECT-TYPE

The mode of the MPLS-TP linear protection mechanism. This can be either PSC or APS, as follows: PSC The Protection State Coordination mode as described in RFC 6378. APS The Automatic Protection Switching mode as described in RFC 7271. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1). The value of this object is not supposed to be changed during operation. When the value should be changed, the protection processes in both LERs MUST be restarted with the same new value. If this value is changed at one LER during operation, the LER will generate PSC packets with a new Capabilities TLV value. This will result in mplsLpsEventCapabilitiesMismatch notifications at both LERs.

OBJECT-TYPE

The protection architecture type of the protection domain. This object represents both the bridge type, which can be either a permanent bridge (1+1) or a selector bridge (1:1); and the switching scheme, which can be either unidirectional or bidirectional. 1+1 In the 1+1 protection scheme, a fully dedicated protection path is allocated. Data traffic is copied and fed at the source to both the working path and the protection path. The traffic on the working path and protection path is transmitted simultaneously to the sink of the protection domain, where selection between the working path and the protection path is performed. 1:1 In the 1:1 protection scheme, a protection path is allocated to protect against a defect, failure, or degradation on the working path. In normal conditions, data traffic is transmitted over the working path, while the protection path functions in the idle state. If there is a defect on the working path or a specific administrative request, traffic is switched to the protection path. bidirectional In the bidirectional protection scheme, both directions will be switched simultaneously even if the fault applies to only one direction of the path. unidirectional In the unidirectional protection scheme, protection switching will be performed independently for each direction of a bidirectional transport path. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

This object represents the reversion mode of the linear protection domain. The reversion mode of the protection mechanism may be either revertive or non-revertive. nonrevertive In the non-revertive mode, after a service has been recovered, traffic will be forwarded on the protection path. revertive In the revertive mode, after a service has been recovered, traffic will be redirected back onto the original working path. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

This object holds the threshold value of the Signal Degrade (SD) defect in percent. In order to detect the SD defect, the MPLS-TP packet loss measurement (LM) is performed every second. If either the packet loss is negative (i.e., there are more packets received than transmitted) or the packet loss ratio (lost packets/transmitted packets) in percent is greater than this threshold value, a Bad Second is declared. Otherwise, a Good Second is declared. The SD defect is detected if there are mplsLpsConfigSdBadSeconds consecutive Bad Seconds and cleared if there are mplsLpsConfigSdGoodSeconds consecutive Good Seconds. This object may be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

This object holds the number of Bad Seconds to detect the SD. If the number of consecutive Bad Seconds reaches this value, the SD defect is detected and used as an input to the protection switching process. This object may be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

This object holds the number of Good Seconds to declare the clearance of an SD defect. After an SD defect occurs on a path, if the number of consecutive Good Seconds reaches this value for the degraded path, the clearance of the SD defect is declared and used as an input to the protection switching process. This object may be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

This object holds the Wait-to-Restore timer value in minutes and can be configured in 1-minute intervals between 5 and 12 minutes. The WTR timer is used to delay the reversion of the PSC state to the Normal state when recovering from a failure condition on the working path when the protection domain is configured for revertive behavior. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

The hold-off time in deciseconds. Represents the time between SF/SD condition detection and declaration of an SF/SD request to the protection switching logic. It is intended to avoid unnecessary switching when a lower-layer protection mechanism is in place. Can be configured in intervals of 100 milliseconds. When a new defect or a more severe defect occurs on the active path (the path from which the selector selects the user data traffic) and this value is non-zero, the hold-off timer will be started. A defect on the standby path (the path from which the selector does not select the user data traffic) does not trigger the start of the hold-off timer, as there is no need for a traffic switchover. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

The Continual Tx Time in seconds. Represents the time interval to send the continual PSC packet to the other end, based on the current state. This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

The Rapid Tx interval in microseconds. Represents the time interval to send the PSC packet to the other end, when there is a change in the state of the linear protection domain due to local input. The default value is 3.3 milliseconds (3300 microseconds). This object may not be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

Allows the initiation of an operator command on the protection domain. When read, this object returns the last command written or noCmd if no command has been written since initialization. The return of the last command written does not imply that this command is currently in effect. This request may have been preempted by a higher-priority local or remote request. This object may be modified if the associated mplsLpsConfigRowStatus object is equal to active(1).

OBJECT-TYPE

The value of sysUpTime at the time the row was created.

OBJECT-TYPE

This object represents the status of the MPLS-TP linear protection domain entry. This variable is used to create, modify, and/or delete a row in this table.

OBJECT-TYPE

The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write access to any columnar objects in the row.

OBJECT-TYPE

This table provides status information about MPLS-TP linear protection domains that have been configured on the system.

OBJECT-TYPE

A conceptual row in the mplsLpsStatusTable.

OBJECT-TYPE

The current state of the PSC state machine.

OBJECT-TYPE

The current value of the PSC Request field received on the most recent PSC packet.

OBJECT-TYPE

The current value of the PSC Request field sent on the most recent PSC packet.

OBJECT-TYPE

The current value of the FPath and Path fields received on the most recent PSC packet.

OBJECT-TYPE

The current value of the FPath and Path fields sent on the most recent PSC packet.

OBJECT-TYPE

This object indicates a provisioning mismatch in the revertive mode across the protection domain endpoints. The value of this object becomes true when a PSC message with an incompatible Revertive field is received or false when a PSC message with a compatible Revertive field is received.

OBJECT-TYPE

This object indicates a provisioning mismatch in the protection type, representing both the bridge type and the switching type, across the protection domain endpoints. The value of this object becomes true when a PSC message with an incompatible Protection Type (PT) field is received or false when a PSC message with a compatible PT field is received.

OBJECT-TYPE

This object indicates a provisioning mismatch in Capabilities TLVs across the protection domain endpoints. The value of this object becomes true when a PSC message with an incompatible Capabilities TLV field is received or false when a PSC message with a compatible Capabilities TLV field is received. The Capabilities TLV with 0xF8000000 indicates that the APS mode is used for the MPLS-TP linear protection mechanism, whereas the PSC mode either (1) uses the Capabilities TLV with a value of 0x0 or (2) does not use the Capabilities TLV because the TLV does not exist.

OBJECT-TYPE

This object indicates a provisioning mismatch in the protection path configuration for PSC communication across the protection domain endpoints. The value of this object becomes true when a PSC message is received from the working path or false when a PSC message is received from the protection path.

OBJECT-TYPE

This object holds the number of occurrences of protocol failure due to a lack of response to a traffic switchover request within 50 ms. When there is a traffic switchover due to a local request, a 50 ms timer is started to detect protocol failure due to no response. If there is no PSC message received with the same Path value as the Path value in the transmitted PSC message until the 50 ms timer expires, protocol failure due to no response occurs.

OBJECT-TYPE

This object holds the number of occurrences of protocol failure due to no PSC message being received during at least 3.5 times the long PSC message interval. When no PSC message is received on the protection path during at least 3.5 times the long PSC message interval and there is no defect on the protection path, protocol failure due to no PSC message occurs.

OBJECT-TYPE

This table lists ME associations that have been configured in protection domains.

OBJECT-TYPE

A conceptual row in the mplsLpsMeConfigTable. There is a sparse relationship between the conceptual rows of this table and the mplsOamIdMeTable. Each time that an entry is created in the mplsOamIdMeTable for which the LER supports MPLS-TP linear protection, a row is created automatically in the mplsLpsMeConfigTable. An entry in this table is related to a single entry in the mplsOamIdMeTable. When a point-to-point transport path needs to be monitored, one ME is needed for the path, and one entry in the mplsOamIdMeTable will be created. But the ME entry in the mplsOamIdMeTable may or may not participate in protection switching. If an ME participates in protection switching, an entry in the mplsLpsMeConfigTable MUST be created, and the objects in the entry indicate which protection domain this ME belongs to and whether this ME is for the working path or the protection path. If the ME does not participate in protection switching, an entry in the mplsLpsMeConfigTable does not need to be created.

OBJECT-TYPE

This object holds the mplsLpsConfigDomainIndex value for the protection domain in which this ME is included. If this ME is not part of any protection domain, then this object contains the value 0. When the value of this object is the same as the value of mplsLpsConfigDomainIndex, the object is defined as either the working path or the protection path of the protection domain corresponding to mplsLpsConfigDomainIndex.

OBJECT-TYPE

This object represents whether the ME is configured as the working path or the protection path.

OBJECT-TYPE

This table contains status information of all the MEs that are included in MPLS-TP linear protection domains.

OBJECT-TYPE

A conceptual row in the mplsLpsMeStatusTable.

OBJECT-TYPE

Indicates the current state of the ME. localSelectTraffic This bit indicates that traffic is being selected from this ME. localSD This bit implies that a local Signal Degrade condition is in effect on this ME/path. localSF This bit implies that a local Signal Fail condition is in effect on this ME/path.

OBJECT-TYPE

Represents the count of Signal Degrade conditions. For the detection and clearance of Signal Degrade, see the description of mplsLpsConfigSdThreshold.

OBJECT-TYPE

Represents the count of Signal Fail conditions. This condition occurs when the OAM running on this ME detects the Signal Fail event.

OBJECT-TYPE

Represents the count of switchovers that happened in this ME. When the mplsLpsMeConfigPath value is 'working', this object will return the number of times that traffic has been switched from this working path to the protection path. When the mplsLpsMeConfigPath value is 'protection', this object will return the number of times that traffic has been switched back to the working path from this protection path.

OBJECT-TYPE

This object holds the value of sysUpTime at the time that the last switchover happened. When the mplsLpsMeConfigPath value is 'working', this object will return the value of sysUpTime when traffic was switched from this path to the protection path. If traffic has never switched to the protection path, the value 0 will be returned. When the mplsLpsMeConfigPath value is 'protection', this object will return the value of sysUpTime the last time that traffic was switched back to the working path from this path. If no traffic has ever switched back to the working path from this protection path, the value 0 will be returned.

OBJECT-TYPE

The cumulative Protection Switching Duration (PSD) time in seconds. For the working path, this is the cumulative number of seconds that traffic was selected from the protection path. For the protection path, this is the cumulative number of seconds that the working path has been used to select traffic.

OBJECT-TYPE

Provides the ability to enable and disable notifications defined in this MIB module. switchover Indicates that mplsLpsEventSwitchover notifications should be generated. revertiveMismatch Indicates that mplsLpsEventRevertiveMismatch notifications should be generated. protecTypeMismatch Indicates that mplsLpsEventProtecTypeMismatch notifications should be generated. capabilitiesMismatch Indicates that mplsLpsEventCapabilitiesMismatch notifications should be generated. pathConfigMismatch Indicates that mplsLpsEventPathConfigMismatch notifications should be generated. fopNoResponse Indicates that mplsLpsEventFopNoResponse notifications should be generated. fopTimeout Indicates that mplsLpsEventFopTimeout notifications should be generated.

OBJECT-IDENTITY

OBJECT-IDENTITY

OBJECT-IDENTITY