RBN-CES-MIB

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Organization: Ericsson AB.

Last Updated: 2010-12-02

Category: Circuit Emulation, Vendor: Ericsson

Description: Manages Circuit Emulation Service (CES) parameters and statistics on Ericsson SmartEdge BRAS platforms.

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What Is RBN-CES-MIB?

RBN-CES-MIB is an Ericsson AB (Redback Networks heritage) proprietary MIB managing Circuit Emulation Service (CES), implementing RFC 5086 (CESoPSN) and RFC 4553 (SAToP) TDM-over-packet emulation. Its configuration table, keyed by index, records packet latency, jitter-buffer depth, consecutive-packets-in-sync/consecutive-missed-packets-out-of-sync thresholds, idle pattern, trunk control, admin status, and row status, while a statistics table records egress out-of-buffer-dropped/missing/malformed/jitter-buffer-overrun/jitter-buffer-underrun/mis-ordered/remote-loss/window-switchover/remote-AC-down/duplicate/denied packet counts, alongside an SLA-info-reset action. As a configuration/performance MIB it lets an administrator confirm CES jitter-buffer settings and watch packet-loss/reordering statistics on an Ericsson SmartEdge CES circuit. It is deployed on Ericsson (Redback Networks) SmartEdge/SM/SSR platforms running CES. Engineers can download the RBN-CES-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RBN-CES-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

Ericsson (Redback Networks) SmartEdge/SM/SSR platforms (CES)

Monitoring Examples

An administrator checks rbnCesStatsEgressMissingPkts and rbnCesStatsEgressJtrBfrUnderruns to diagnose a degraded CES TDM circuit on an Ericsson SmartEdge router.

What Can Be Monitored

CES jitter-buffer configuration and packet-loss/reorder statistics

Imported Objects

From IF-MIB

InterfaceIndex

From RBN-ALARM-TC

RbnAlarmId

From RBN-SMI

rbnMgmt

OBJECT-IDENTITY

From RBN-TC

RbnPercentage

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
RowStatus
TimeInterval
TruthValue

How to Use in IPNetwork Monitor

Example using rbnCesStatsEgressOutOfBfrDroppedPkts OID:

Select an Ericsson (Redback) SmartEdge/SM/SSR router (TDM Circuit Emulation Service over packet) 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 rbnCesStatsEgressOutOfBfrDroppedPkts 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 the number of packets dropped due to buffer starvation in the PSN to TDM direction(egress). 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 Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rbnCesMIB	1.3.6.1.4.1.2352.2.56			This MIB describes objects used for managing Circuit Emulation Service(CES) protocols, including RFC 5086: Structure-Aware Time Division Multiplexed (TDM) Circuit Emulation Service over Packet Switched Network (CESoPSN) and RFC 4553: Structure Agnostic Circuit Emulation Service over Packet Switch Network(SAToP).
rbnCesMIBObjects	1.3.6.1.4.1.2352.2.56.1
T/F rbnCesSlaInfoResetAll	1.3.6.1.4.1.2352.2.56.1.1	TruthValue	read-write	Setting this object to 'true' resets all CES Service Level Agreement(SLA) information objects in the rbnCesSlaInfoTable. This object always returns 'false' value.
rbnCesCfgTable	1.3.6.1.4.1.2352.2.56.1.2		not-accessible	Configuration table for CES circuits.
rbnCesCfgEntry	1.3.6.1.4.1.2352.2.56.1.2.1		not-accessible	Each entry in this table represents a CES circuit.
NUM rbnCesCfgIndex	1.3.6.1.4.1.2352.2.56.1.2.1.1	InterfaceIndex	not-accessible	This object is used to uniquely identify a CES circuit. The value of this object should be the same as the value of ifIndex when they are used to identify the same CES circuit.
U32 rbnCesCfgPktLatency	1.3.6.1.4.1.2352.2.56.1.2.1.2	Unsigned32	read-create	This object specifies the time of packetizing frames into a packet. The packet latency is calculated by multiplying number of frames by a constant frame packetization time(125 microseconds). The system packetizes 8 frames into a packet by default
U32 rbnCesCfgJtrBfrDepth	1.3.6.1.4.1.2352.2.56.1.2.1.3	Unsigned32	read-create	The number of microseconds of expected packet delay variation for this CES PW over PSN. The value must be at least two times the expected packet jitter through the network.
U32 rbnCesCfgConsecPktsInSync	1.3.6.1.4.1.2352.2.56.1.2.1.4	Unsigned32	read-create	The number of consecutive packets that are required to exit loss of packet state(LOPS)
U32 rbnCesCfgConsecMissPktsOutSync	1.3.6.1.4.1.2352.2.56.1.2.1.5	Unsigned32	read-create	The number of consecutive missing packets that are required to enter loss of packet state(LOPS)
OCT rbnCesCfgIdlePattern	1.3.6.1.4.1.2352.2.56.1.2.1.6	OCTET STRING	read-create	The object determines the value to be used on the TDM channel when packets have over/underflow in the jitter buffer or are missing for any reason at the CES bound. The default value for E1 is 0x54 and T1 is 0x3F.
T/F rbnCesCfgTrunkCtl	1.3.6.1.4.1.2352.2.56.1.2.1.7	TruthValue	read-create	This object enforces the RFC 5086 requirement that controls at most one CES PW state(AIS or RDI) on the outgoing T1/E1 trunk.
INT rbnCesCfgAdminStatus	1.3.6.1.4.1.2352.2.56.1.2.1.8	INTEGER	read-create	This object controls CES feature on the circuit. Setting this object to 'up' enables CES on the circuit; setting this object to 'down' disables CES on the circuit and removes corresponding entries in the rbnCesStatsTable, rbnCesEplStatsTable, and rbnCesSlaInfoTable. To modify other 'read-create' objects in the conceptual row, this object must be set to 'down'. The value of 'rbnCesCfgRowStatus' must be 'active' in order for this object to be set to 'up'.
ROW rbnCesCfgRowStatus	1.3.6.1.4.1.2352.2.56.1.2.1.9	RowStatus	read-create	This object is used to manage the creation and deletion of CES configuration conceptual rows. Except 'rbnCesCfgAdminStatus', 'read-create' objects in the conceptual row cannot be modified when this object is set to active(1). To change this object from 'active' to a different value, the 'rbnCesCfgAdminStatus' object must be 'down'. To create a row in this table, this object could be set to either 'createAndGo(4)' or 'createAndWait(5)'. Until all objects in the conceptual row are appropriately configured, this object will transit to 'notReady(3)'.
rbnCesStatsTable	1.3.6.1.4.1.2352.2.56.1.3		not-accessible	CES statistics table.
rbnCesStatsEntry	1.3.6.1.4.1.2352.2.56.1.3.1		not-accessible	Each entry in this table represents a CES circuit.
C64 rbnCesStatsEgressOutOfBfrDroppedPktsEx	1.3.6.1.4.1.2352.2.56.1.3.1.1	Counter64	read-only	Number of packets dropped due to buffer starvation in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressMissingPkts	1.3.6.1.4.1.2352.2.56.1.3.1.2	Counter64	read-only	Number of missing packets detected via control word sequence number gaps in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressMalformedPkts	1.3.6.1.4.1.2352.2.56.1.3.1.3	Counter64	read-only	Number of malformed packets including unexpected size in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressJtrBfrOverrunPkts	1.3.6.1.4.1.2352.2.56.1.3.1.4	Counter64	read-only	Number of packets dropped due to jitter buffer overrun in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressJtrBfrUnderruns	1.3.6.1.4.1.2352.2.56.1.3.1.5	Counter64	read-only	Number of times jitter buffer underrun has been detected in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressMisOrderPkts	1.3.6.1.4.1.2352.2.56.1.3.1.6	Counter64	read-only	Number of out of sequence packets received in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressRemoteLossPkts	1.3.6.1.4.1.2352.2.56.1.3.1.7	Counter64	read-only	Number of packets received with the R bit set in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressWindowSwitchovers	1.3.6.1.4.1.2352.2.56.1.3.1.8	Counter64	read-only	Number of times serial number lost synchronization and was forced to move to a new window in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressRemoteAcDownPkts	1.3.6.1.4.1.2352.2.56.1.3.1.9	Counter64	read-only	Number of packets received with L bit set to 1, indicating that the far end's attachment circuit is down (in LOF or LOS or AIS) in the PSN to TDM direction(egress). Either AIS or idle pattern was played out on the local access circuit.
C64 rbnCesStatsEgressDuplicatePkts	1.3.6.1.4.1.2352.2.56.1.3.1.10	Counter64	read-only	Number of packets dropped due to being duplicated, as determined by the PW codeword sequence number in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressDeniedPkts	1.3.6.1.4.1.2352.2.56.1.3.1.11	Counter64	read-only	Number of packets dropped because they are denied in the PSN to TDM direction(egress).
C64 rbnCesStatsEgressErrorEvents	1.3.6.1.4.1.2352.2.56.1.3.1.12	Counter64	read-only	Number of times a packet is replaced with a dummy packet in the PSN to TDM direction(egress) because the system is in underrun mode or the packet was lost.
C64 rbnCesStatsEgressErrorDataBlocks	1.3.6.1.4.1.2352.2.56.1.3.1.13	Counter64	read-only	Block of data transmitted to the TDM attachment circuit and of a size defined in accordance with the [ITU-T G.826] rules for the corresponding TDM service that has experienced at least one CESoPSN/SAToP error event in the PSN to TDM direction(egress). For example, consider a T1/E1 Attachment Circuit Error Data Block for T1 = Error Event * (192 * Packet Latency) Error Data Block for E1 = Error Event * (256 * Packet Latency)
C64 rbnCesStatsIngressOutOfBfrDroppedPkts	1.3.6.1.4.1.2352.2.56.1.3.1.14	Counter64	read-only	Number of packets that could not be sent due to buffer starvation in the PSN to TDM direction(egress).
C64 rbnCesStatsIngressSizeViolationDroppedPkts	1.3.6.1.4.1.2352.2.56.1.3.1.15	Counter64	read-only	Number of packets not transmitted because their size is greater than the largest supported in the PSN to TDM direction(egress).
C64 rbnCesStatsIngressTransmitDroppedPkts	1.3.6.1.4.1.2352.2.56.1.3.1.16	Counter64	read-only	Number of packets not transmitted due to congestion in the transmit queue in the PSN to TDM direction(egress).
rbnCesEplCfgTable	1.3.6.1.4.1.2352.2.56.1.4		not-accessible	CES excessive packet loss configuration table.
rbnCesEplCfgEntry	1.3.6.1.4.1.2352.2.56.1.4.1		not-accessible	Each entry in this table represents a set of global CES excessive packet loss configuration.
I32 rbnCesEplCfgIndex	1.3.6.1.4.1.2352.2.56.1.4.1.1	Integer32	not-accessible	This object is used to uniquely identify a set of CES excessive packet loss configuration.
RBN rbnCesEplCfgThreshold	1.3.6.1.4.1.2352.2.56.1.4.1.2	RbnPercentage	read-create	Threshold in percentage representing the upper limits of measurement for excessive packet loss. It is the ratio of (Total Lost Packets) / (Total Transmitted Packets)
U32 rbnCesEplCfgFaultDeclarationTime	1.3.6.1.4.1.2352.2.56.1.4.1.3	Unsigned32	read-create	This object controls fault declaration time of excessive packet loss alarm. It is a successive duration that experience excessive packet loss defect.
U32 rbnCesEplCfgClearingTime	1.3.6.1.4.1.2352.2.56.1.4.1.4	Unsigned32	read-create	This object controls how excessive packet loss alarms are cleared. It is a successive periods of duration T that do not experience an excessive packet loss defect. Duration T is a system constant value which is 25 milliseconds.
T/F rbnCesEplCfgStatsResetAll	1.3.6.1.4.1.2352.2.56.1.4.1.5	TruthValue	read-write	Setting this object to 'true' resets all CES excessive packet loss statistic objects in the rbnCesEplStatsTable. This object always returns 'false' value.
INT rbnCesEplCfgAdminStatus	1.3.6.1.4.1.2352.2.56.1.4.1.6	INTEGER	read-create	This object controls the CES excessive packet loss configurations. Setting this object to 'up' enables CES excessive packet loss monitoring on all CES circuits in the system; setting this object to 'down' disables the feature and removes all entries in the rbnCesEplStatsTable. There is only one active CES excessive packet loss configuration allowed. To modify other 'read-create' objects in the conceptual row, the 'rbnCesEplCfgAdminStatus' object must be set to 'down'. The value of the 'rbnCesEplCfgRowStatus' object must be 'active' in order for this object to be set to 'up'.
ROW rbnCesEplCfgRowStatus	1.3.6.1.4.1.2352.2.56.1.4.1.7	RowStatus	read-create	This object is used to manage the creation and deletion of CES excessive packet loss configuration conceptual rows. Except 'rbnCesEplCfgAdminStatus', 'read-create' objects in the conceptual row cannot be modified when this object is set to active(1). To change this object from 'active' to a different value, the 'rbnCesEplCfgAdminStatus' object must be 'down'. To create a row in this table, this object could be set to either 'createAndGo(4)' or 'createAndWait(5)'. Until all objects in the conceptual row are appropriately configured, this object will transit to 'notReady(3)'.
rbnCesEplStatsTable	1.3.6.1.4.1.2352.2.56.1.5		not-accessible	CES excessive packet loss statistics table.
rbnCesEplStatsEntry	1.3.6.1.4.1.2352.2.56.1.5.1		not-accessible	Each entry in this table represents a CES circuit.
NUM rbnCesEplStatsIndex	1.3.6.1.4.1.2352.2.56.1.5.1.1	InterfaceIndex	not-accessible	This object is used to uniquely identify a CES circuit. The value of this object should be the same as the value of ifIndex when they are used to identify the same CES circuit.
DAT rbnCesEplStatsEntryTime	1.3.6.1.4.1.2352.2.56.1.5.1.2	DateAndTime	read-only	Date and time when the current excessive packet loss snapshot starts.
NUM rbnCesEplStatsEntryTotalPktLossTime	1.3.6.1.4.1.2352.2.56.1.5.1.3	TimeInterval	read-only	The entry total packet loss time of current excessive packet loss snapshot.
NUM rbnCesEplStatsExitTime	1.3.6.1.4.1.2352.2.56.1.5.1.4	TimeInterval	read-only	The exit packet loss time of current excessive packet loss snapshot.
NUM rbnCesEplStatsExitTotalPktLossTime	1.3.6.1.4.1.2352.2.56.1.5.1.5	TimeInterval	read-only	The exit total packet loss time of current excessive packet loss snapshot.
G32 rbnCesEplStatsCount	1.3.6.1.4.1.2352.2.56.1.5.1.6	Gauge32	read-only	The total number of times when the CES PW was in the excessive packet loss state.
NUM rbnCesEplStatsTotalCircuitTime	1.3.6.1.4.1.2352.2.56.1.5.1.7	TimeInterval	read-only	Total CES PW time including CES PW up time and time spent in excessive packet loss state.
RBN rbnCesEplStatsTotalFailureRate	1.3.6.1.4.1.2352.2.56.1.5.1.8	RbnPercentage	read-only	The percentage of time the CES PW spent in the excessive packet loss state during the total CES PW time.
T/F rbnCesEplStatsReset	1.3.6.1.4.1.2352.2.56.1.5.1.9	TruthValue	read-write	This object is used to reset CES EPL statistic objects in the entry. Setting this object to 'true' resets 'rbnCesEplStatsEntryTime' to current time and other CES EPL statistic objects to zero. The object always returns 'false' value.
rbnCesSlaInfoTable	1.3.6.1.4.1.2352.2.56.1.6		not-accessible	CES Service Level Agreement information table.
rbnCesSlaInfoEntry	1.3.6.1.4.1.2352.2.56.1.6.1		not-accessible	Each entry in this table represents a CES circuit that is in its outage state.
NUM rbnCesSlaInfoIndex	1.3.6.1.4.1.2352.2.56.1.6.1.1	InterfaceIndex	not-accessible	This object is used to uniquely identify a CES circuit. The value of this object should be the same as the value of ifIndex when they are used to identify the same CES interface.
NUM rbnCesSlaInfoLatestOutageTime	1.3.6.1.4.1.2352.2.56.1.6.1.2	TimeInterval	read-only	The amount of time during the latest occurrence when the CES PW was in the packet loss or underrun state.
DAT rbnCesSlaInfoEntryLatestOutage	1.3.6.1.4.1.2352.2.56.1.6.1.3	DateAndTime	read-only	Date and time of the most recent occurrence when the CES PW entered the packet loss or underrun state.
DAT rbnCesSlaInfoExitLatestOutage	1.3.6.1.4.1.2352.2.56.1.6.1.4	DateAndTime	read-only	Date and time of the most recent occurrence when the CES PW exited the packet loss or underrun state.
NUM rbnCesSlaInfoLastOutageTime	1.3.6.1.4.1.2352.2.56.1.6.1.5	TimeInterval	read-only	The duration of the previous occurrence(the one before the latest occurrence) when the CES PW was in the packet loss or underrun state.
NUM rbnCesSlaInfoLastUpTime	1.3.6.1.4.1.2352.2.56.1.6.1.6	TimeInterval	read-only	Total CES PW up time before the latest outage occurred.
NUM rbnCesSlaInfoTotalOutageTime	1.3.6.1.4.1.2352.2.56.1.6.1.7	TimeInterval	read-only	Total outage time since the CES PW was created.
NUM rbnCesSlaInfoTotalUpTime	1.3.6.1.4.1.2352.2.56.1.6.1.8	TimeInterval	read-only	Total CES PW up time since it was created excluding the cumulative outage time.
G32 rbnCesSlaInfoOutageCount	1.3.6.1.4.1.2352.2.56.1.6.1.9	Gauge32	read-only	Number of times a CES PW outage occurred.
T/F rbnCesSlaInfoReset	1.3.6.1.4.1.2352.2.56.1.6.1.10	TruthValue	read-write	Setting this object to 'true' resets CES SLA objects to zero. The object always returns 'false' value.
rbnCesCardAlarmTable	1.3.6.1.4.1.2352.2.56.1.7		not-accessible	This table consists of CES specific card alarms. The alarms are used to indicate CES card level communication errors. Other card alarms are not included in the table.
rbnCesCardAlarmEntry	1.3.6.1.4.1.2352.2.56.1.7.1		not-accessible	Each entry in this table represents a CES specific card alarm.
RBN rbnCesCardAlarmId	1.3.6.1.4.1.2352.2.56.1.7.1.1	RbnAlarmId	not-accessible	This object is used to uniquely identify a CES card alarm.
T/F rbnCesCardAlarmNotificationEnable	1.3.6.1.4.1.2352.2.56.1.7.1.2	TruthValue	read-write	This object indicates whether rbnCardAlarm notification is generated. If true, a notification is generated for the card alarm indicated by rbnCesCardAlarmId. Otherwise no notification is generated.
rbnCesMIBConformance	1.3.6.1.4.1.2352.2.56.2
rbnCesMIBCompliances	1.3.6.1.4.1.2352.2.56.2.1
rbnCesMIBCompliance	1.3.6.1.4.1.2352.2.56.2.1.1			The compliance statement for CES MIB implementations.
rbnCesMIBGroups	1.3.6.1.4.1.2352.2.56.2.2
rbnCesCfgGroup	1.3.6.1.4.1.2352.2.56.2.2.1			Conformance group for CES configurations.
rbnCesStatsGroup	1.3.6.1.4.1.2352.2.56.2.2.2			Conformance group for CES statistics.
rbnCesEplCfgGroup	1.3.6.1.4.1.2352.2.56.2.2.3			Conformance group for CES excessive packet loss configurations.
rbnCesEplStatsGroup	1.3.6.1.4.1.2352.2.56.2.2.4			Conformance group for CES excessive packet loss statistics.
rbnCesSlaInfoGroup	1.3.6.1.4.1.2352.2.56.2.2.5			Conformance group for CES service level agreement statistics.
rbnCesCardAlarmGroup	1.3.6.1.4.1.2352.2.56.2.2.6			Conformance group for CES card alarms.

RFC description

Circuit Emulation Service (CES) management for TDM over packet networks, including RFC 5086 CESoPSN and RFC 4553 SAToP protocols.

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Download RBN-CES-MIB