TN-LAG-MIB

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Organization: Nokia

Last Updated: 2014-11-25

Category: Link Aggregation, Nokia Carrier Ethernet

Description: Manages Nokia carrier Ethernet link aggregation group membership and LACP configuration.

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What Is TN-LAG-MIB?

TN-LAG-MIB is a Nokia (formerly Alcatel-Lucent) proprietary MIB for the 7x50 family of carrier Ethernet/service routers, implementing management of IEEE 802.3ad Link Aggregation Groups (LAG/LACP). It exposes configuration and operational data per LAG such as LACP enable state and mode, admin key auto-generation, port count thresholds and threshold-crossing actions, dynamic cost adjustment, and a descriptive name for each aggregate. For monitoring, it lets an operator confirm a LAG's administrative and row status, whether LACP negotiation is enabled and in active/passive mode, and whether the number of active member ports has fallen below the configured tnLagPortThreshold — a condition that typically triggers the configured tnLagPortThresholdAction and signals reduced link redundancy/bandwidth rather than a single-interface fault. It is explicitly built on top of the IEEE 802.3ad Link Aggregation standard, layering Nokia-specific provisioning objects over that standard's LACP concepts. It is deployed on Nokia 7x50 (7750/7450/7250) service router platforms in carrier and large-enterprise WAN/Ethernet aggregation networks. Engineers can download the TN-LAG-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in TN-LAG-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Nokia 1830 PSS (Photonic Service Switch) optical transport platform

Monitoring Examples

An operator would poll tnLagConfigTable/tnLagConfigEntry, reading tnLagPortThreshold against the actual count of LACP-bundled member ports to detect when a LAG has dropped below its minimum bandwidth requirement. tnLagEnableLACP and tnLagLACPMode confirm whether a given LAG (indexed by tnLagIndex) is running active or passive LACP negotiation. If tnLagRowStatus shows the aggregate is active but fewer physical ports are up than tnLagPortThreshold requires, the configured tnLagPortThresholdAction (e.g., bringing the LAG down) would be expected to fire.

What Can Be Monitored

LAG operational/row status
LACP enable state and mode
active member port count vs. threshold
port threshold action
LAG description/dynamic costing

Imported Objects

From IEEE8023-LAG-MIB

dot3adAggPortEntry

OBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TimeStamp
TruthValue

From TN-PORT-MIB

tnPortLagId
tnPortPortID

From TN-TC-MIB

TItemLongDescription
TNamedItemOrEmpty

From TROPIC-GLOBAL-REG

tnSRMIBModules	OBJECT-IDENTITY
tnSRNotifyPrefix	OBJECT-IDENTITY
tnSRObjs	OBJECT-IDENTITY

From TROPIC-SYSTEM-MIB

tnSysSwitchId

OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using tnLagPortThresholdFalling OID:

Select a Nokia 7750/7450/7250 service router (802.3ad LAG admin/threshold status) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type tnLagPortThresholdFalling into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports counts the number of linkDown or dynamicCost events for the Link Aggregation Group caused by the number of physical ports being less than or equal to tnLagPortThreshold value. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
tnLagMIBModule	1.3.6.1.4.1.7483.5.1.3.15			This document is the SNMP MIB module to manage and provision the IEEE 802.3ad Link Aggregation Group operation on Nokia 7x50 systems. Copyright 2003-2009 Nokia. All rights reserved. Reproduction of this document is authorized on the condition that the foregoing copyright notice is included. This SNMP MIB module (Specification) embodies Nokia's proprietary intellectual property. Nokia retains all title and ownership in the Specification, including any revisions. Nokia grants all interested parties a non-exclusive license to use and distribute an unmodified copy of this Specification in connection with management of Nokia products, and without fee, provided this copyright notice and license appear on all copies. This Specification is supplied 'as is', and Nokia makes no warranty, either express or implied, as to the use, operation, condition, or performance of the Specification.
tnLagObjects	1.3.6.1.4.1.7483.6.1.2.15
tnLagConfigTable	1.3.6.1.4.1.7483.6.1.2.15.2		not-accessible	Configuration information about each Link Aggregation Group.
tnLagConfigEntry	1.3.6.1.4.1.7483.6.1.2.15.2.1		not-accessible	An entry (conceptual row) in the tnLagConfigTable. Each entry represents a Link Aggregation Group. Create or destroy rows to add or remove Link Aggregation Groups (LAG). After tnLagRowStatus is set to active(1), a corresponding entry is created in IEEE8023-LAG-MIB dot3adAggTable. The corresponding entry in IEEE8023-LAG-MIB dot3adAggTable is removed when tnLagRowStatus is set to destroy(6). Use ifAdminStatus to set interface up and down for this LAG entry. Use ifAlias for the interface description.
NUM tnLagIndex	1.3.6.1.4.1.7483.6.1.2.15.2.1.1	LAGInterfaceNumber	not-accessible	the number of the Link Aggregation Group.
ROW tnLagRowStatus	1.3.6.1.4.1.7483.6.1.2.15.2.1.2	RowStatus	read-create	RowStatus for this entry.
INT tnLagPortThreshold	1.3.6.1.4.1.7483.6.1.2.15.2.1.3	INTEGER	read-create	tnLagPortThreshold is a threshold for tnLagPortThresholdAction. When a physical port link state changes and the number of operational physical ports is less than or equal to tnLagPortThreshold, tnLagPortThresholdAction is invoked: either the LAG is set operationally down, or the protocols operating on the LAG interface are adjusted. When the number of operational physical ports becomes greater than tnLagPortThreshold, tnLagPortThresholdAction is revoked: either the LAG is set operationally up, or the protocols operating on the LAG interface are adjusted. The value zero means tnLagPortThresholdAction is never invoked. To invoke dynamicCost at every physical port state change, set tnLagPortThreshold to the total number of physical ports configured to be in the Link Aggregation Group.
INT tnLagPortThresholdAction	1.3.6.1.4.1.7483.6.1.2.15.2.1.4	INTEGER	read-create	Port Threshold Action is action to take when the number of operational (link up) physical ports is less than tnLagPortThreshold. When a physical port ifOperStatus changes and the number of operational physical ports is less than or equal to tnLagPortThreshold: - when set to down(1), the ifOperStatus for the Link Aggregation Group (tnLagIfIndex) goes to down(2). - when set to dynamicCost(2), the ifOperStatus stays up(2), but dependent protocols such as OSPF are signaled and will adjust their operation (cost) to match the number of physical ports remaining in the Link Aggregation Group. a tnLagDynamicCostOn notification is generated. When a physical port ifOperStatus changes and the number of operational physical ports is greater than tnLagPortThreshold: - when set to down(1), the ifOperStatus for the Link Aggregation Group (tnLagIfIndex) goes to up(1). - when set to dynamicCost(2), the ifOperStatus stays up(2), but dependent protocols such as OSPF are signaled and will adjust their operation (cost) to be the value as configured. a tnLagDynamicCostOff notification is generated. Regardless of the setting of this object, when the number of operational physical ports goes to zero, the Link Aggregation Group's ifOperStatus goes to down.
T/F tnLagEnableMarkerGenerator	1.3.6.1.4.1.7483.6.1.2.15.2.1.5	TruthValue	read-create	enables (true(1)) or disables (false(2)) the Marker Generator protocol.
T/F tnLagEnableLACP	1.3.6.1.4.1.7483.6.1.2.15.2.1.6	TruthValue	read-create	enables (true(1)) or disables (false(2)) the Link Aggregation Control Protocol (LACP).
TIT tnLagDescription	1.3.6.1.4.1.7483.6.1.2.15.2.1.7	TItemLongDescription	read-create	discription text for the Link Aggregation Group port.
T/F tnLagDynamicCosting	1.3.6.1.4.1.7483.6.1.2.15.2.1.8	TruthValue	read-create	When dynamic cost and OSPF autocost are both configured then costing is applied based on the total number of links configured and the cost is advertised inversely proportional to the number of links available at the time, providing the number of links that are up exceeds the configured LAG threshold value at which time the configured threshold action determines if and at what cost this LAG will be advertised.
INT tnLagLACPMode	1.3.6.1.4.1.7483.6.1.2.15.2.1.9	INTEGER	read-create	tnLagLACPMode represents the mode in which LACP will operate. If the value is set to 'passive', LACP places all member ports of a lag into a passive negotiating state. When this is the case member ports of the lag respond to LACP packets they receive but do not initiate LACP packet negotiation. If the value is set to 'active', LACP places all member ports of a lag in to an active negotiation state. When this occurs the port will initiate LACP negotiation immediately once the port achieves link up state. At least one of the peer lag ports must be configured as active to initiate LACP. The default mode is passive.
T/F tnLagLACPAdminKeyAutogen	1.3.6.1.4.1.7483.6.1.2.15.2.1.10	TruthValue	read-only	tnLagLACPAdminKeyAutogen is set to 'true' if the lag administrative key in the dot3adAggActorAdminKey object was auto generated. tnLagLACPAdminKeyAutogen is set to 'false', if the lag administrative key was manually configured.
INT tnLagLACPTransmitInterval	1.3.6.1.4.1.7483.6.1.2.15.2.1.11	INTEGER	read-create	tnLagLACPTransmitInterval configures the timer interval for periodic transmission of LACP packets. If set to 'slow', LACP packets are transmitted every 30 seconds. If set to 'fast', LACP packets are transmitted every second.
INT tnLagAccessAdaptQos	1.3.6.1.4.1.7483.6.1.2.15.2.1.12	INTEGER	read-create	The value of tnLagAccessAdaptQos specifies how the LAG SAP queue and virtual scheduler buffering and rate parameters are adapted over multiple active MDAs. link (1) - The LAG will create the SAP queues and virtual schedulers with the actual parameters on each MDA. distribute (2) - Each MDA will receive a fraction of the SAP and scheduler parameters.
T/F tnLagLACPXmitStdby	1.3.6.1.4.1.7483.6.1.2.15.2.1.13	TruthValue	read-create	The value of tnLagLACPXmitStdby specifies whether or not LACP messages are transmitted on standby-links.
INT tnLagLACPSelCrit	1.3.6.1.4.1.7483.6.1.2.15.2.1.14	INTEGER	read-create	The value of tnLagLACPSelCrit specifies which selection criteria should be used to select the active sub-group.
T/F tnLagLACPSelCritSlaveToPartner	1.3.6.1.4.1.7483.6.1.2.15.2.1.15	TruthValue	read-create	The value of tnLagLACPSelCritSlaveToPartner specifies together with tnLagLACPSelCrit selection criteria should be used to select the active sub-group. The term 'eligible member' refers to a lag-member link which can potentially become active. This means it is oper up, and not disabled for use by the remote side. The object tnLagLACPSelCritSlaveToPartner can be used to control whether ornot this latter condition is taken into account.
U32 tnLagLACPNbrOfSubGroups	1.3.6.1.4.1.7483.6.1.2.15.2.1.16	Unsigned32	read-only	The value of tnLagLACPNbrOfSubGroups indicates the number of subgroups configured in this LAG.
U32 tnLagholdTimeDown	1.3.6.1.4.1.7483.6.1.2.15.2.1.17	Unsigned32	read-create	The value of tnLagholdTimeDown specifies the timer in 0.1 second units which controls the delay between detecting that a LAG is down (all active ports are down) and reporting it to the higher levels. The default value for this timer is 0, i.e. the higher levels are informed directly. A non zero value may be configured e.g. when active/standby signalling is used in a 1:1 fashion to avoid that the higher levels are informed during the small time interval between detecting that the LAG is down and the time needed to activate the standby system.
INT tnLagPortType	1.3.6.1.4.1.7483.6.1.2.15.2.1.18	INTEGER	read-create	The value of tnLagPortType specifies the type of ports allowed in this LAG. A value of 'standard (1)' allows all non-HSMDA type ports to be added to this LAG. A value of 'hsmda (2)' limits the LAG members to be HSMDA ports only.
T/F tnLagPerFpIngQueuing	1.3.6.1.4.1.7483.6.1.2.15.2.1.19	TruthValue	read-create	The value of tnLagPerFpIngQueuing specifies whether a more efficient method of queue allocation for LAG SAPs should be utilized. An 'inconsistentValue' error is returned if this object is set to a different value when there are existing port members in the LAG.
tnLagOperationTable	1.3.6.1.4.1.7483.6.1.2.15.3		not-accessible	Operational information about each Link Aggregation Group.
tnLagOperationEntry	1.3.6.1.4.1.7483.6.1.2.15.3.1		not-accessible	An entry (conceptual row) in the tnLagOperationTable. Each entry represents an active Link Aggregation Group.
NUM tnLagIfIndex	1.3.6.1.4.1.7483.6.1.2.15.3.1.1	InterfaceIndexOrZero	read-only	ifIndex for the Link Aggregation Group. This value is zero when tnLagRowStatus is not active(1).
TIM tnLagConfigLastChange	1.3.6.1.4.1.7483.6.1.2.15.3.1.2	TimeStamp	read-only	last change timestamp records when any object in tnLagConfigTable was set.
C32 tnLagPortThresholdFallingEx	1.3.6.1.4.1.7483.6.1.2.15.3.1.3	Counter32	read-only	counts the number of linkDown or dynamicCost events for the Link Aggregation Group caused by the number of physical ports being less than or equal to tnLagPortThreshold value.
C32 tnLagPortThresholdRising	1.3.6.1.4.1.7483.6.1.2.15.3.1.4	Counter32	read-only	counts the number of linkUp or dynamicCost events for the Link Aggregation Group caused by the number of physical ports being greater than tnLagPortThreshold value.
U32 tnLagScalar1	1.3.6.1.4.1.7483.6.1.2.15.4	Unsigned32	read-only	A dummy scalar that satisfies a SNMP get request quickly when there is no 11QPE24 card provisioned. Otherwise, it has to traverse the remaining 11QPE24 MIB to get to the next applicable item.
tnLagMemberTable	1.3.6.1.4.1.7483.6.1.2.15.5		not-accessible	The tnLagMemberTable has an entry for each Port that is part of a LAG.
tnLagMemberEntry	1.3.6.1.4.1.7483.6.1.2.15.5.1		not-accessible	Each row entry represents a particular port in a LAG. Entries are automatically created when a Port is provisioned as part of a LAG, i.e. when tnPortLagId from TIMETRA-PORT-MIB.mib is changed from its default value of '0'.
TNA tnLagMemberPortName	1.3.6.1.4.1.7483.6.1.2.15.5.1.1	TNamedItemOrEmpty	read-only	The value of tnLagMemberPortName indicates the name of the port that is a member of the LAG used to index into tnLagMemberTable. This is a read-only object that is the same as tnPortName from TIMETRA-PORT-MIB.mib.
T/F tnLagMemberPortIsPrimary	1.3.6.1.4.1.7483.6.1.2.15.5.1.2	TruthValue	read-only	The value of tnLagMemberPortIsPrimary indicates whether the port used to index into tnLagMemberTable is the primary port of the LAG used to index into tnLagMemberTable.
tnLagPortTable	1.3.6.1.4.1.7483.6.1.2.15.6		not-accessible	The tnLagPortTable extends the IEEE8023-LAG-MIB::dot3adAggPortTable with 7x50 specific features.
tnLagPortEntry	1.3.6.1.4.1.7483.6.1.2.15.6.1		not-accessible	A list of Link Aggregation Control configuration parameters for each Aggregation Port on this device. The tnLagPortTable extends the IEEE8023-LAG-MIB::dot3adAggPortTable with 7x50 specific features.
LAG tnLagPortSubgroup	1.3.6.1.4.1.7483.6.1.2.15.6.1.1	LAGSubgroup	read-write	The value of tnLagPortSubgroup specifies the subgroup to which the port in this LAG is assigned.
INT tnLagPortActiveStdby	1.3.6.1.4.1.7483.6.1.2.15.6.1.2	INTEGER	read-only	The value of tnLagPortActiveStdby indicates active standby state of this port in the LAG.
tnLagConfigXTable	1.3.6.1.4.1.7483.6.1.2.15.7		not-accessible	Extension information about each Link Aggregation Group.
tnLagConfigXEntry	1.3.6.1.4.1.7483.6.1.2.15.7.1		not-accessible	An entry (conceptual row) in the tnLagConfigXTable. Each entry represents an active Link Aggregation Group.
U32 tnLagConfigXIngressAvailBandwidth	1.3.6.1.4.1.7483.6.1.2.15.7.1.1	Unsigned32	read-only	Indicate the remaining Ingress Bandwidth of the LAG.
U32 tnLagConfigXEgressAvailBandwidth	1.3.6.1.4.1.7483.6.1.2.15.7.1.2	Unsigned32	read-only	Indicate the remaining Egress Bandwidth of the LAG.
I32 tnLagConfigXMaxPortSize	1.3.6.1.4.1.7483.6.1.2.15.7.1.3	Integer32	read-create	Indicate the number of aggregated port.Allow to set the size of the LAG.
U32 tnLagConfigXNumSelectedPorts	1.3.6.1.4.1.7483.6.1.2.15.7.1.4	Unsigned32	read-only	indicate the number of selected ports for the LAG.
U32 tnLagConfigXNumAttachedPorts	1.3.6.1.4.1.7483.6.1.2.15.7.1.5	Unsigned32	read-only	indicate the number of attached ports for the LAG.
NUM tnLagConfigXPrimaryPort	1.3.6.1.4.1.7483.6.1.2.15.7.1.6	InterfaceIndex	read-only	Specify the primary port for the LAG group.
INT tnLagAdminState	1.3.6.1.4.1.7483.6.1.2.15.7.1.7	INTEGER	read-write	.
INT tnLagLPTConsequenceAction	1.3.6.1.4.1.7483.6.1.2.15.7.1.8	INTEGER	read-create	Indicates the Lag LPT ConsequenceAction.
INT tnLagLosProp	1.3.6.1.4.1.7483.6.1.2.15.7.1.9	INTEGER	read-create	The LOS propagation.
INT tnLagTPID	1.3.6.1.4.1.7483.6.1.2.15.7.1.10	INTEGER	read-create	The TPID for the LagGroup.
I32 tnLagMtu	1.3.6.1.4.1.7483.6.1.2.15.7.1.11	Integer32	read-create	The size of the largest packet which can be sent/received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.
G32 tnLagSpeed	1.3.6.1.4.1.7483.6.1.2.15.7.1.12	Gauge32	read-only	.
tnLagCommandTable	1.3.6.1.4.1.7483.6.1.2.15.20		not-accessible	The tnLagCommandTable consists of one-shot action commands that force or clear active standby state on LAG subgroups.
tnLagCommandEntry	1.3.6.1.4.1.7483.6.1.2.15.20.1		not-accessible	The tnLagCommandEntry contains the commands available to execute on an existing LAG. Rows in this table are created and destroyed by the system
LAG tnLagSubgroup	1.3.6.1.4.1.7483.6.1.2.15.20.1.1	LAGSubgroup	not-accessible	The value of tnLagSubgroup specifies the subgroup on which the command is executed.
INT tnLagCommand	1.3.6.1.4.1.7483.6.1.2.15.20.1.2	INTEGER	read-write	The value of tnLagCommand specifies the command.
INT tnLagCommandActiveStdby	1.3.6.1.4.1.7483.6.1.2.15.20.1.3	INTEGER	read-write	The value of tnLagCommandActiveStdby indicates active standby state the subgroup is forced to be. This parameter is not required for clearForce command.
T/F tnLagCommandAllMc	1.3.6.1.4.1.7483.6.1.2.15.20.1.4	TruthValue	read-write	If tnLagCommandAllMc is 'true', all MC-LAGs are forced to switch or clear.
IPt tnLagCommandMcPeerIpType	1.3.6.1.4.1.7483.6.1.2.15.20.1.5	InetAddressType	read-write	The value of tnLagCommandMcPeerIpType specifies the address type of tnLagCommandMcPeerIpAddr.
IP tnLagCommandMcPeerIpAddr	1.3.6.1.4.1.7483.6.1.2.15.20.1.6	InetAddress	read-write	The value of tnLagCommandMcPeerIpAddr specifies the address of the MC-LAG peer that is forced to switch or clear.
U32 tnLagScalar2	1.3.6.1.4.1.7483.6.1.2.15.101	Unsigned32	read-only	A dummy scalar that satisfies a SNMP get request quickly when there is no 11QPE24 card provisioned. Otherwise, it has to traverse the remaining 11QPE24 MIB to get to the next applicable item.
U32 tnLagScalar3	1.3.6.1.4.1.7483.6.1.2.15.102	Unsigned32	read-only
tnLagNotifyPrefix	1.3.6.1.4.1.7483.6.1.3.15
tnLagNotifications	1.3.6.1.4.1.7483.6.1.3.15.0
NTF tnLagDynamicCostOn	1.3.6.1.4.1.7483.6.1.3.15.0.1			the number of phyical ports in the Link Aggregation Group is less than or equal to tnLagPortThreshold value.
NTF tnLagDynamicCostOff	1.3.6.1.4.1.7483.6.1.3.15.0.2			the number of phyical ports in the Link Aggregation Group is greater than tnLagPortThreshold value.

RFC description

Manages IEEE 802.3ad Link Aggregation Groups (LAG) on Nokia 7x50 service platforms for link bundling.

Start monitoring Nokia 7750/7450/7250 service router (802.3ad LAG admin/threshold status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download TN-LAG-MIB