CENTILLION-SYSTEM-EVENT-LOG-MIB

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Category: ATM, Vendor: Nortel

Description: Manages system event logging configuration and event log retrieval on Nortel Centillion ATM switch platforms.

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What Is CENTILLION-SYSTEM-EVENT-LOG-MIB?

CENTILLION-SYSTEM-EVENT-LOG-MIB is a Nortel (Bay Networks) enterprise MIB for the Centillion series of ATM switches that manages the platform's onboard system event log. No sample objects were available for this module, but MIBs of this type typically expose a table of logged events with timestamps, severity levels, and descriptive text, along with configuration for log size and clearing. Its primary monitoring value is fault and software-status visibility, letting an operator retrieve historical system events such as reboots, configuration changes, and hardware/link faults recorded internally by the switch, functioning as an SNMP-accessible equivalent of a syslog buffer. It is a standalone Nortel vendor MIB not derived from an IETF logging standard. It was used in legacy enterprise ATM campus network deployments running Centillion switches, where administrators periodically retrieved the event log for troubleshooting. Network engineers evaluating or troubleshooting this functionality can download the CENTILLION-SYSTEM-EVENT-LOG-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CENTILLION-SYSTEM-EVENT-LOG-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

Nortel/Bay Networks Centillion ATM switch

Monitoring Examples

An administrator would poll the event log table to retrieve recent entries, each carrying a timestamp, severity, and event description, to reconstruct the sequence of events leading up to a reported switch problem. Repeated entries indicating link-down or module-reset events at the same timestamp range would point to a specific hardware or trunk fault. Because sample objects were unavailable for this MIB, exact table/column names could not be confirmed, but the event-log pattern is consistent with Nortel's other system-log MIBs of this era.

What Can Be Monitored

logged system events
event timestamps
event severity level
event log size/capacity

Imported Objects

From CENTILLION-ROOT-MIB

CardId
PortId
sysEvtLogMgmt	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

IpAddress

From RFC1213-MIB

DisplayString

From S5-TCS-MIB

TimeIntervalSec

OIDs

OID symbolic	OID numeric	Type	Access	Description
NUM sysEvtLogDuration	1.3.6.1.4.1.930.2.1.5.1	TimeIntervalSec	read-write	This value indicates the remaining duration of Event Logging. The unit is in seconds. The maximum value is equal to 1000 days (86,400,000 seconds). A set value of greater than 1000 days will result BADVALUE return. A value of 0 indicates the Event Logging is now stopped and disabled. A non-zero value indicates that Event Logging is enabled. Default value is set at system cold start only.
OCT sysEvtLogPreFilterEntityMap	1.3.6.1.4.1.930.2.1.5.2	OCTET STRING	read-write	The bit array that contains the bit map of all possible entities for event logging pre-filter control. There are total of 64 entities. Each entity represented by one bit. A bit with a value of 1 means that the corresponding Entity is enabled for event logging, 0 when the event logging is disabled for the corresponding entity. The following show the bit position and associated entity. Bit 0 - SNMP_ENT_ATM_PORT Bit 1 - SNMP_ENT_BOOTP Bit 2 - SNMP_ENT_CLC Bit 3 - SNMP_ENT_CLI Bit 4 - SNMP_ENT_CONFIG Bit 5 - SNMP_ENT_ETHERNET Bit 6 - SNMP_ENT_FDB Bit 7 - SNMP_ENT_HW Bit 8 - SNMP_ENT_IISP Bit 9 - SNMP_ENT_ILMI Bit 10 - SNMP_ENT_IP Bit 11 - SNMP_ENT_LANE Bit 12 - SNMP_ENT_LEC Bit 13 - SNMP_ENT_MCP Bit 14 - SNMP_ENT_SIGNL Bit 15 - SNMP_ENT_SNMP Bit 16 - SNMP_ENT_STP Bit 17 - SNMP_ENT_TELNET Bit 18 - SNMP_ENT_TFTP Bit 19 - SNMP_ENT_TOKENRING Bit 20 - SNMP_ENT_VPORT Bit 21 - SNMP_ENT_MPOA When a new entity is created, a new bit position should also be defined. The order of bit is defined as bit 0-7 in the lowest oder of byte (first byte), bit 8-15 in the second lowest order of byte(second bye), and so on. The lower number of bit is the least significant bit within the byte.
INT sysEvtLogPreFilterSeverity	1.3.6.1.4.1.930.2.1.5.3	INTEGER	read-write	This value indicates the severity level for event log pre-filtering control. An event message with less severity level will not be logged into event message buffer. All messages with equal or greater severity level are logged into the message buffer. The emergency level is also named as panic level inc CLI command.
sysEvtLogSlotPreFilterTable	1.3.6.1.4.1.930.2.1.5.4		not-accessible	A slot table for controlling pre-filter setting for all slots. This table is managed by Event Log application only. Table entries cannot be created or deleted.
sysEvtLogSlotPreFilterEntry	1.3.6.1.4.1.930.2.1.5.4.1		not-accessible	An entry of the slot pre-filter table.
CAR sysEvtLogSlotPreFilterCardId	1.3.6.1.4.1.930.2.1.5.4.1.1	CardId	read-only	The slot index varies by system. It is chassis dependent. For C100, valid number is 1-6. For BH left, valid number is 2-7. For BH right, valid number is 8-13. etc.
INT sysEvtLogSlotPreFilterControl	1.3.6.1.4.1.930.2.1.5.4.1.2	INTEGER	read-write	This value indicates the pre-filter setting for the specified slot.
sysEvtLogPortPreFilterTable	1.3.6.1.4.1.930.2.1.5.5		not-accessible	A port table for controlling pre-filter setting for all ports. This table is managed by Event Log application only. Table entries cannot be created or deleted.
sysEvtLogPortPreFilterEntry	1.3.6.1.4.1.930.2.1.5.5.1		not-accessible	An entry for port table for controlling pre-filter setting for all ports.
CAR sysEvtLogPortPreFilterCardId	1.3.6.1.4.1.930.2.1.5.5.1.1	CardId	read-only	The slot index varies by system. It is chassis dependent. For C100, valid number is 1-6. For BH left, valid number is 2-7. For BH right, valid number is 8-13. etc.
POR sysEvtLogPortPreFilterPortId	1.3.6.1.4.1.930.2.1.5.5.1.2	PortId	read-only	The port index of the specified slot.
INT sysEvtLogPortPreFilterControl	1.3.6.1.4.1.930.2.1.5.5.1.3	INTEGER	read-write	This value indicates the pre-filter setting for the specified port. Note: A module must be properly configured before any port of the module can be set with a value of sysEvtLogPortPreFilterControl. A BADVALUE is returned when one enables a port in a disabled slot.
INT sysEvtLogDestMap	1.3.6.1.4.1.930.2.1.5.6	INTEGER	read-write	This value is a bit map of each destination that Event Log can forward messages to, where bit 0 for console CLI bit 1 for Syslogd bit 2 for Tftpsave The value of other bits has no effect. A bit value of 1 means the destination is enabled. Otherwise, disabled. Note: Enabling Syslogd prior setting sysEvtLogSysLogHostIp will return BADVALUE for set. Enabling Tftpsave prior setting sysEvtLogTftpsaveHostIp will return BADVALUE for set.
sysEvtLogSysLogCfg	1.3.6.1.4.1.930.2.1.5.7
IP sysEvtLogSysLogHostIp	1.3.6.1.4.1.930.2.1.5.7.1	IpAddress	read-write	The IP address of Unix system that runs Syslogd. The event messages are redirect to Syslogd only when this IP address is valid and the bit value of Syslogd of sysEvtLogDestMap is enabled. Note: Set an invalid IP address results a BADVALUE return.
INT sysEvtLogSysLogSeverity	1.3.6.1.4.1.930.2.1.5.7.2	INTEGER	read-write	This value indicates the severity level for Event Log to forward events to SysLogd in Unix system. An event message with less severity level will not be forwarded to SysLogd. All messages with equal or greater severity level are forwarded to SysLogd.
INT sysEvtLogSysLogFacility	1.3.6.1.4.1.930.2.1.5.7.3	INTEGER	read-write	This value indicates the facility number for the event messages to be logged by syslogd. The supported values are from local0 to local7 only (refer to syslogd manual of Unix system)
sysEvtLogTftpsaveCfg	1.3.6.1.4.1.930.2.1.5.8
IP sysEvtLogTftpsaveHostIp	1.3.6.1.4.1.930.2.1.5.8.1	IpAddress	read-write	The IP address of TFTP server system. The event messages file is transfered from event log buffer to server system only when this IP is valid and the event message count reach its threshold. (refer to sysEvtLogTftpsaveMaxMsgCount) and the bit value of Tftpsave of sysEvtLogDestMap is enabled. Note: Set an invalid IP address results a BADVALUE return.
STR sysEvtLogTftpsaveFileName	1.3.6.1.4.1.930.2.1.5.8.2	DisplayString	read-write	This octet string indicates the file name for the Tftpsave option of event log function. The filename will be appended with an extension nnn, where nnn ranges from 000 to 999, as each TFTP file transfer occurs. The filename is default to the last three bytes of MAC address of the switch in hexadecimal format.
INT sysEvtLogTftpsaveMaxMsgCount	1.3.6.1.4.1.930.2.1.5.8.3	INTEGER	read-write	This value indicates how many messages in the event log buffer will trigger the TFTP file transfer for logged messages to TFTP host. the default value is maximum messages count for the event log buffer, which is currently equal to 680. If the value is set to zero or greater than the maximum value, it returns a BADVALUE.

RFC description

Manages system event logging and filtering for Nortel Centillion network devices.

Start monitoring Nortel/Bay Networks Centillion ATM switches 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 CENTILLION-SYSTEM-EVENT-LOG-MIB

What Is CENTILLION-SYSTEM-EVENT-LOG-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description