H3C-MPLSOAM-PS-MIB

All MIBs › H3C-MPLSOAM-PS-MIB

Organization: Huawei 3Com Technologies Co., Ltd.

Last Updated: 2007-03-31

Category: MPLS and Traffic Engineering, Technology: OAM, Vendor: H3C/HH3C

Description: H3C MIB for MPLS OAM protection switching managing path protection and failover for MPLS LSPs.

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What Is H3C-MPLSOAM-PS-MIB?

H3C-MPLSOAM-PS-MIB is an H3C (Hangzhou Huawei-3Com) enterprise MIB for managing MPLS OAM-based protection switching, allowing a working label-switched path (LSP) to fail over to a protect LSP when a fault is detected. It exposes configuration and state data for protection groups, including the work/protect LSP names, revertive mode, wait-to-restore (WTR) timers, hold-off timers, and switch conditions, along with trap enable controls. Its monitoring value is primarily operational/software status: it lets an administrator watch the work LSP detect state to see if the primary path has failed, confirm whether a protection group has already switched to its protect path, and receive traps the moment a protection switch event occurs, effectively acting as a fault/failover status monitor for the MPLS forwarding plane. It builds on the standard MPLS and MPLS OAM concepts defined in IETF MPLS MIBs and is only meaningful on devices running MPLS with configured protection groups. It is typically deployed on H3C carrier-grade routers and switches in MPLS backbone or metro networks where fast LSP protection switching is required for service continuity. Network engineers evaluating or troubleshooting this functionality can download the H3C-MPLSOAM-PS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in H3C-MPLSOAM-PS-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

H3C/HPE Comware MPLS-capable routers and switches

Monitoring Examples

An operator would poll h3cMplsPsTable (h3cMplsPsEntry), indexed by h3cMplsPsIndex/h3cMplsPsGroupID, to see the h3cMplsPsWorkLspName and h3cMplsPsProtectLspName paired in a protection group, along with h3cMplsPsWorkLspDetectState showing whether the primary path has failed. A change in h3cMplsPsSwitchCondition, or a notification from h3cMplsOamPsNotifications when h3cMplsOamPsTrapOpen is enabled, indicates traffic has switched to the protect LSP, prompting investigation of the working path; h3cMplsPsRevertiveMode and h3cMplsPsWTR are then checked to see whether and when traffic will revert automatically.

What Can Be Monitored

MPLS protection group status
working vs. protect LSP assignment
working LSP fault/detect state
protection switch condition/trigger
revertive mode and wait-to-restore timer
protection switch trap notifications

Imported Objects

From HUAWEI-3COM-OID-MIB

h3cCommon

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
h3cMplsOamPs	1.3.6.1.4.1.2011.10.2.80			This MIB contains objects to configure mpls protect-switch module.
h3cMplsOamPsScalarGroup	1.3.6.1.4.1.2011.10.2.80.1
T/F h3cMplsOamPsTrapOpen	1.3.6.1.4.1.2011.10.2.80.1.1	TruthValue	read-write	Whether mpls protect-switch trap is globally enabled. false: disable; true: enable
h3cMplsOamPsTable	1.3.6.1.4.1.2011.10.2.80.2
h3cMplsPsTable	1.3.6.1.4.1.2011.10.2.80.2.1		not-accessible	This table specifies per-protection-group MPLS PS capability and associated information.
h3cMplsPsEntry	1.3.6.1.4.1.2011.10.2.80.2.1.1		not-accessible	An entry in this table is created by an LSR for every protection group capable of supporting mpls ps.
I32 h3cMplsPsIndex	1.3.6.1.4.1.2011.10.2.80.2.1.1.1	Integer32	not-accessible	This is a unique index for an entry in the mplspsEntry.
I32 h3cMplsPsGroupID	1.3.6.1.4.1.2011.10.2.80.2.1.1.2	Integer32	read-create	This is a unique group id for an entry in the mplspsEntry. One protect-switch group is composed of one working static-lsp and one protection static-lsp.
OCT h3cMplsPsWorkLspName	1.3.6.1.4.1.2011.10.2.80.2.1.1.3	OCTET STRING	read-create	The name of the working static-lsp.
OCT h3cMplsPsProtectLspName	1.3.6.1.4.1.2011.10.2.80.2.1.1.4	OCTET STRING	read-create	The name of the protection static-lsp.
I32 h3cMplsPsRevertiveMode	1.3.6.1.4.1.2011.10.2.80.2.1.1.5	Integer32	read-create	Revertive mode is a protection switching mode where revertive action (switch back to the working LSP) is taken after the working LSP is repaired. And switching does not occur in a non-revertive mode. 1: revertive; 2: non-revertive;
I32 h3cMplsPsWTR	1.3.6.1.4.1.2011.10.2.80.2.1.1.6	Integer32	read-create	Wait to Restore timer is only applicable for the revertive mode and applies to a working LSP, it prevents reversion back to select the working LSP until the Wait to Restore timer has expired. The default value is 12 minutes. step is 30s.
I32 h3cMplsPsHoldOff	1.3.6.1.4.1.2011.10.2.80.2.1.1.7	Integer32	read-create	The time between declaration of signal degrade or signal fail, and the initialization of the protection switching algorithm. Step is 100ms, maximum is 10s.
I32 h3cMplsPsSwitchCondition	1.3.6.1.4.1.2011.10.2.80.2.1.1.8	Integer32	read-create	The current switch condition of the protection group. 1: clear, this command clears all of the externally initiated switch commands listed below; 2: lockout of protection, fix the selector position on the working LSP, Prevents the selector from switching to the protection LSP when it is selecting the working LSP. Switches the selector from the protection to the working LSP when it is selecting the protection LSP; 3: forced protection, switches the selector from the working LSP to the protection LSP (unless a higher priority switch request (i.e., LoP) is in effect); 4: signal fail, for 1:1, Signal Fail (SF) is declared when the source of the protection domain enters the Defect State by receiving a BDI packet (from the return LSP or out of band). 5: manual switch for working-lsp, switches the selector from the working LSP to the protection LSP (unless an equal or higher priority switch request (i.e., LoP, FS, SF or MS) is in effect); 6: manual switch for protection-lsp, switches the selector from the protection LSP to the working LSP (unless an equal or higher priority switch request (i.e., LoP, FS, SF or MS) is in effect). 7: WTR-timer, a configurable timer which is used to delay before reversion; 8: HoldOff-timer, the time between declaration of signal degrade or signal fail, and the initialization of the protection switching algorithm; 9: Others; The pripority of the commands are: clear > lockout of protection > force switch > manual switch for working lsp = manual switch for protection lsp
I32 h3cMplsPsWorkLspDetectState	1.3.6.1.4.1.2011.10.2.80.2.1.1.9	Integer32	read-only	The state of working static-lsp state in one protection group, whether it is in defect: 1: it is out of defect; 2: it enters defect.
I32 h3cMplsPsWorkLspUpDownState	1.3.6.1.4.1.2011.10.2.80.2.1.1.10	Integer32	read-only	The state of working static-lsp state in one protection group, whether it is up or down: 1: it is in up state; 2: it is in down state.
I32 h3cMplsPsProtLspDetectState	1.3.6.1.4.1.2011.10.2.80.2.1.1.11	Integer32	read-only	The state of protection static-lsp state in one protection group, whether it is in detection: 1: it is out of defect; 2: it enters defect.
I32 h3cMplsPsProtLspUpDownState	1.3.6.1.4.1.2011.10.2.80.2.1.1.12	Integer32	read-only	The state of protection static-lsp state in one protection group, whether it is up or down: 1: it is in up state; 2: it is in down state.
I32 h3cMplsPsSwitchResult	1.3.6.1.4.1.2011.10.2.80.2.1.1.13	Integer32	read-only	Which tunnel is used to transfer the data stream. 1: working static-lsp; 2: protection static-lsp.
ROW h3cMplsPsRowStatus	1.3.6.1.4.1.2011.10.2.80.2.1.1.14	RowStatus	read-create	This object is responsible for managing the creation, deletion and modification of rows, which support active status and CreatAndGo, destroy operation. To create a new row, h3cMplsPsGroupID, h3cMplsPsWorkLspName, h3cMplsPsProtectLspName, h3cMplsPsRevertiveMode, h3cMplsPsWTR and h3cMplsPsHoldOff must be specified.
h3cMplsOamPsNotifications	1.3.6.1.4.1.2011.10.2.80.3
NTF h3cMplsPsSwitchPtoW	1.3.6.1.4.1.2011.10.2.80.3.1			This notification is generated when switching from protection-lsp to working-lsp occured.
NTF h3cMplsPsSwitchWtoP	1.3.6.1.4.1.2011.10.2.80.3.2			This notification is generated when switching from woking-lsp to protection-lsp occured.

RFC description

Configures MPLS protection switching for automatic failover on H3C LSR devices.

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Download H3C-MPLSOAM-PS-MIB

What Is H3C-MPLSOAM-PS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description