RBN-ATM-PVC-OAM-MIB

All MIBs › RBN-ATM-PVC-OAM-MIB

Organization: Redback Networks, Inc.

Last Updated: 2002-11-13

Category: ATM, Vendor: Ericsson

Description: Manages ATM PVC OAM cell loopback and continuity check operations on Redback platforms.

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What Is RBN-ATM-PVC-OAM-MIB?

RBN-ATM-PVC-OAM-MIB is a Redback Networks enterprise MIB (Redback's product line was later folded into Ericsson's SmartEdge platforms) for monitoring ATM Permanent Virtual Circuit (PVC) OAM — Operation, Administration and Maintenance — functionality based on F5 end-to-end loopback/continuity-check cells. It exposes a per-PVC status table keyed by slot, port, VPI and VCI, reporting the current OAM state of each circuit, alongside the module's standard notification, object, and conformance groupings. Its primary monitoring value is fault detection at the circuit level: the OAM state reveals whether a PVC's remote-end connectivity has failed (loss of the F5 heartbeat), which the system uses to automatically bring the PVC down — a direct feed for detecting link failures rather than chassis hardware health. It builds on standard ATM PVC and ITU-T F5 OAM loopback concepts layered onto Redback's proprietary slot/port/VPI/VCI addressing scheme. It is deployed on Redback/Ericsson SmartEdge broadband aggregation routers carrying ATM-based DSL or leased-line access circuits, where RBN-ATM-PVC-OAM-MIB SNMP monitoring flags F5 OAM loopback failures at the individual PVC level.

IPNetwork Monitor allows you to monitor SNMP objects defined in RBN-ATM-PVC-OAM-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

Redback SmartEdge (Ericsson) broadband/ATM aggregation router

Monitoring Examples

An operator polling rbnAtmPvcOamStatusTable (indexed by rbnAtmPvcOamStatusSlot/Port/Vpi/Vci) can see rbnAtmPvcOamStatusState transition from up to down for a specific circuit, indicating the remote end has stopped responding to F5 OAM loopback cells and the PVC has been automatically taken down. This lets the admin localize a failure to a specific slot/port/VPI/VCI combination rather than the whole ATM interface and correlate it with subscriber-reported outages on that circuit.

What Can Be Monitored

per-PVC OAM operational state
PVC identified by slot/port/VPI/VCI
OAM loopback/continuity-check failures

Imported Objects

From RBN-SMI

rbnMgmt

OBJECT-IDENTITY

From RBN-TC

RbnPort
RbnSlot

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using rbnAtmPvcOamStatusState OID:

Select a Redback/Ericsson SmartEdge router (ATM PVC F5 OAM monitoring) 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 rbnAtmPvcOamStatusState 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. The state of the ATM PVC OAM function on a given ATM PVC. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'oamUp', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rbnAtmPvcOamMib	1.3.6.1.4.1.2352.2.19			Defines the objects required to monitor the ATM PVC OAM (Operation, Administration, and Maintenance) function. The OAM functionality may be enabled on one or more ATM PVCs in a system. When this functionality is enabled on a given PVC, the system will periodically generate OAM F5 end-to-end loopback cells on the PVC. The primary goal of this function is to insure that an ATM PVC is brought down if the loss of network connectivity to the remote end is detected by the failure of the F5 OAM heartbeat cell. In addition, when this function is enabled on a PVC, receipt of an incoming F5 OAM VC-AIS (Virtual Circuit - Alarm Indication Signal) cell or F5 OAM VC-RDI (Virtual Circuit - Remote Detection Indicator) cell will also cause the associated PVC to be brought down.
rbnAtmPvcOamMibNotifications	1.3.6.1.4.1.2352.2.19.0
NTF rbnAtmPvcOamStatusStateChange	1.3.6.1.4.1.2352.2.19.0.1			A notification indicating that the state of an ATM PVC has transitioned as a result of the ATM PVC OAM function. This notification will be sent if the value of rbnAtmPvcOamStatusState transitions from oamUp to any of the three oamDown values, or if it transitions from any of the three oamDown values to oamUp.
rbnAtmPvcOamMibObjects	1.3.6.1.4.1.2352.2.19.1
rbnAtmPvcOamStatusTable	1.3.6.1.4.1.2352.2.19.1.1		not-accessible	A table which contains the status of the ATM PVC OAM function for every ATM PVC in the managed system. There will be one entry in this table for each ATM PVC active in the system, whether the PVC is statically configured or was created on-demand.
rbnAtmPvcOamStatusEntry	1.3.6.1.4.1.2352.2.19.1.1.1		not-accessible	An entry which contains the status of the ATM PVC OAM function for a given ATM PVC.
RBN rbnAtmPvcOamStatusSlot	1.3.6.1.4.1.2352.2.19.1.1.1.1	RbnSlot	not-accessible	The slot containing the given ATM PVC.
RBN rbnAtmPvcOamStatusPort	1.3.6.1.4.1.2352.2.19.1.1.1.2	RbnPort	not-accessible	The port containing the given ATM PVC.
I32 rbnAtmPvcOamStatusVpi	1.3.6.1.4.1.2352.2.19.1.1.1.3	Integer32	not-accessible	The VPI value of the given ATM PVC.
I32 rbnAtmPvcOamStatusVci	1.3.6.1.4.1.2352.2.19.1.1.1.4	Integer32	not-accessible	The VCI value of the given ATM PVC.
INT rbnAtmPvcOamStatusStateEx	1.3.6.1.4.1.2352.2.19.1.1.1.5	INTEGER	read-only	The state of the ATM PVC OAM function on a given ATM PVC. A value of noOam indicates the ATM PVC OAM function is not active on the given ATM PVC A value of oamUp indicates the ATM PVC OAM function is active on the given ATM PVC and no failure condition is currently being detected on the circuit A value of oamDownLoopback indicates the ATM PVC OAM function is active on the given ATM PVC and F5 OAM loopback cell management has detected a fault on the circuit A value of oamDownAis indicates the ATM PVC OAM function is active on the given ATM PVC and a VC-AIS cell was recently received which indicates a fault on the circuit A value of oamDownRdi indicates the ATM PVC OAM function is active on the given ATM PVC and a VC-RDI cell was recently received which indicates a fault on the circuit
rbnAtmPvcOamMibConformance	1.3.6.1.4.1.2352.2.19.2
rbnAtmPvcOamCompliances	1.3.6.1.4.1.2352.2.19.2.1
rbnAtmPvcOamCompliance	1.3.6.1.4.1.2352.2.19.2.1.1			The compliance statement for SNMP entities which implement the Redback ATM PVC OAM MIB.
rbnAtmPvcOamGroups	1.3.6.1.4.1.2352.2.19.2.2
rbnAtmPvcOamGroup	1.3.6.1.4.1.2352.2.19.2.2.1			The collection of objects which allow monitoring of the ATM PVC OAM function.
rbnAtmPvcOamNotifyGroup	1.3.6.1.4.1.2352.2.19.2.2.2			The collection of notifications which allow monitoring of the ATM PVC OAM function.

RFC description

Monitors ATM PVC OAM (Operation, Administration, and Maintenance) functions including F5 end-to-end loopback cells and VC-AIS/VC-RDI alarm detection.

Start monitoring Redback/Ericsson SmartEdge router (ATM PVC F5 OAM monitoring) 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 RBN-ATM-PVC-OAM-MIB