SWITCH-CHASSIS-MIB

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Last Updated: 1997-04-29

Category: Switch Management - General

Description: Manages switch chassis hardware components including slots, modules, power supplies, and fans.

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What Is SWITCH-CHASSIS-MIB?

SWITCH-CHASSIS-MIB is a proprietary "SWITCH chassis entity" module (vendor-generic naming) modeling the hardware identity, firmware, and basic network configuration of a modular switch chassis. It exposes hardware inventory data (chassis and board serial numbers, hardware ID, base MAC address), software/firmware version information, cooling-fan status, and basic IP addressing/system configuration parameters. Its monitoring emphasis strongly covers hardware and software status: chassisFanStatus directly reports cooling-fan health critical to preventing chassis overheating, chassisOSVersion and chassisFwVersion track running software/firmware for version-compliance auditing, and chassisLastChanges flags when the chassis configuration was last modified. It complements standard entity- and IP-oriented MIBs (such as ENTITY-MIB and IP-MIB) though implemented here as a single proprietary chassis-level module. It is deployed on modular/chassis-based Ethernet switches where operators need a unified view of hardware identity, firmware version, fan health, and management IP configuration. Engineers can download the SWITCH-CHASSIS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SWITCH-CHASSIS-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

modular/chassis-based Ethernet switch

Monitoring Examples

An administrator polls chassisFanStatus to confirm cooling fans are operating normally and would treat any failure indication as urgent, since it risks chassis overheating. Comparing chassisOSVersion and chassisFwVersion against an expected baseline flags switches running outdated or unauthorized software, while chassisSerialNumber and chassisBoardSerialNumber support hardware-inventory audits. A change in chassisLastChanges alerts operators that the chassis configuration was modified, and cross-checking ipAddr/ipNetMask/ipParams confirms the management IP is still correctly assigned afterward.

What Can Be Monitored

cooling fan status
OS/firmware version
hardware/board serial numbers
base MAC address
IP address/netmask configuration
last configuration change timestamp

Imported Objects

From SNMPv2-SMI

Counter32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
RowStatus
TEXTUAL-CONVENTION
TimeStamp

From TELESYN-ATI-TC

switchChassis

OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using chassisLastChanges OID:

Select a modular/chassis-based Ethernet switch (hardware inventory/fan/firmware 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 chassisLastChanges into the Find box to locate it in the OID tree, then select it and click OK. Counts the number of times the system config file has been written to flash since last reboot. 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
switchChassisMib	1.3.6.1.4.1.207.8.9.1.1			The MIB module for SWITCH chassis entity.
chassisParams	1.3.6.1.4.1.207.8.9.1.1.1
STR chassisSerialNumber	1.3.6.1.4.1.207.8.9.1.1.1.1	DisplayString	read-only	The serial number of the chassis.
OID chassisHwId	1.3.6.1.4.1.207.8.9.1.1.1.2	HwIdentifier	read-only	A version number for the motherboard - first 16 bits is the major number, second 16 bits is the minor number.
STR chassisOSVersion	1.3.6.1.4.1.207.8.9.1.1.1.3	DisplayString	read-only	Software version of the operating system kernel.
STR chassisFwVersion	1.3.6.1.4.1.207.8.9.1.1.1.4	DisplayString	read-only	The chassis firmware version.
C32 chassisLastChangesEx	1.3.6.1.4.1.207.8.9.1.1.1.5	Counter32	read-only	Counts the number of times the system config file has been written to flash since last reboot.
MAC chassisBaseMacAddress	1.3.6.1.4.1.207.8.9.1.1.1.6	MacAddress	read-only	This object is the 6-byte 'base' MAC address for this chassis.
INT chassisFanStatus	1.3.6.1.4.1.207.8.9.1.1.1.7	INTEGER	read-only	The operational status of fan. 'slowOrStopped' indicates the fan rpm is lower than a minimum required value.
STR chassisBoardSerialNumber	1.3.6.1.4.1.207.8.9.1.1.1.8	DisplayString	read-only	The serial number of the mother board.
ipParams	1.3.6.1.4.1.207.8.9.1.1.3
IP ipAddr	1.3.6.1.4.1.207.8.9.1.1.3.1	IpAddress	read-write	The IP address that the device will use after a restart. The device's active IP address can be determined by examining the appropriate instance of the ipAdEntAddr attribute of the MIB-II IP address table.
IP ipNetMask	1.3.6.1.4.1.207.8.9.1.1.3.2	IpAddress	read-write	The subnet mask that the device will use after a restart. The device's active subnet mask can be determined by examining the appropriate instance of the ipAdEntNetMask attribute of the MIB-II IP address table.
INT ipBcastForm	1.3.6.1.4.1.207.8.9.1.1.3.3	INTEGER	read-write	The type of IP broadcast address that the device will use after a restart: the Internet standard all-ones broadcast address or the non- standard all zeros broadcast address. The device's active broadcast address type can be determined by examining the appropriate instance of the ipAdEntBcastAddr attribute of the MIB-II IP address table.
INT ipEncap	1.3.6.1.4.1.207.8.9.1.1.3.4	INTEGER	read-write	The type of IP datagram encapsulation that the device will use after a restart: Ethernet or IEEE802.2. The active type of IP datagram encapsulation can be determined by examining the appropriate instance of the ifType attribute of the MIB-II interfaces table entry for the device's Ethernet interface. If the value of that instance of ifType is ethernet-csmacd(6), then the active type of IP datagram encapsulation is Ethernet; if the value of that instance of ifType is iso88023-csmacd(7), then the active type of IP datagram encapsulation is IEEE802.2.
IP ipDefaultGateway	1.3.6.1.4.1.207.8.9.1.1.3.5	IpAddress	read-write	The default gateway IP address that the device will use after a restart. The device's operational default gateway IP address can be determined by examining the value of the ipRouteNextHop.0.0.0.0 attribute of the MIB-II IP routing table.
STR ipDomainName	1.3.6.1.4.1.207.8.9.1.1.3.6	DisplayString	read-write	The device's domain name.
sysConfigParams	1.3.6.1.4.1.207.8.9.1.1.4
INT bootFlag	1.3.6.1.4.1.207.8.9.1.1.4.1	INTEGER	read-write	Boot flags to define the startup parameters
U32 dramSize	1.3.6.1.4.1.207.8.9.1.1.4.2	Unsigned32	read-only	DRAM size in bytes
OID cpuVer	1.3.6.1.4.1.207.8.9.1.1.4.3	HwIdentifier	read-only	Hardware identifier of the processor.
OID iscVer	1.3.6.1.4.1.207.8.9.1.1.4.4	HwIdentifier	read-only	Hardware identifier of the Galileo chip.
OID pigVer	1.3.6.1.4.1.207.8.9.1.1.4.5	HwIdentifier	read-only	Hardware identifier of the PIG chip.
SWV postVer	1.3.6.1.4.1.207.8.9.1.1.4.6	SwVersionId	read-only	Software version of the POST diagnostic.
SWV isdVer	1.3.6.1.4.1.207.8.9.1.1.4.7	SwVersionId	read-only	Software version of the ISD diagnostic.
SWV bootVer	1.3.6.1.4.1.207.8.9.1.1.4.8	SwVersionId	read-only	Software version of the boot prom.
U32 qmuMemSize	1.3.6.1.4.1.207.8.9.1.1.4.9	Unsigned32	read-only	QME memory size
segBusTable	1.3.6.1.4.1.207.8.9.1.1.4.10		not-accessible	A table of attributes associated with segBus.
segBusEntry	1.3.6.1.4.1.207.8.9.1.1.4.10.1		not-accessible	A list of attributes associated with a segBus.
INT segBusIndex	1.3.6.1.4.1.207.8.9.1.1.4.10.1.1	INTEGER	not-accessible	SegBus number
OID segBusPmiuId	1.3.6.1.4.1.207.8.9.1.1.4.10.1.2	HwIdentifier	read-only	Hardware identifier of the Port Manager Interface Unit (PMIU) chip
OID segBusQmuId	1.3.6.1.4.1.207.8.9.1.1.4.10.1.3	HwIdentifier	read-only	Hardware identifier of the Queue Management Unit (QMU) chip
snmpParams	1.3.6.1.4.1.207.8.9.1.1.6
snmpIpTrapRcvrTable	1.3.6.1.4.1.207.8.9.1.1.6.1		not-accessible	A list of entries containing information about network management stations with Ip addresses that are to receive traps generated by this device over UDP.
snmpIpTrapRcvrEntry	1.3.6.1.4.1.207.8.9.1.1.6.1.1		not-accessible	An entry containing information about a single network management station with an Ip address that is to receive traps generated by this device over UDP.
IP snmpIpTrapRcvrIpAddress	1.3.6.1.4.1.207.8.9.1.1.6.1.1.1	IpAddress	not-accessible	The Ip address of this trap receiver.
INT snmpIpTrapRcvrPort	1.3.6.1.4.1.207.8.9.1.1.6.1.1.2	INTEGER	read-create	The UDP port number for the Trap receiver.
STR snmpIpTrapRcvrCommunity	1.3.6.1.4.1.207.8.9.1.1.6.1.1.3	DisplayString	read-create	The community string to be specified in traps sent to this ip trap receiver.
ROW snmpIpTrapRcvrStatus	1.3.6.1.4.1.207.8.9.1.1.6.1.1.4	RowStatus	read-create	This object is used to create or delete entries in the snmpIpTrapRcvrTable.
IP snmpUnAuthIpAddr	1.3.6.1.4.1.207.8.9.1.1.6.2	IpAddress	read-only	The IP address of the last management station that attempted to access this agent with an invalid community string. This object is used as a variable binding in an Authentication Failure Trap-PDU.
OCT snmpUnAuthCommunity	1.3.6.1.4.1.207.8.9.1.1.6.3	OCTET STRING	read-only	The community string specified by the most recent unauthenticated attempt to access this agent. This object is used as a variable binding in an Authentication Failure Trap-PDU.
consoleParams	1.3.6.1.4.1.207.8.9.1.1.7
U32 consolePortSpeed	1.3.6.1.4.1.207.8.9.1.1.7.1	Unsigned32	read-write	The speed of the console port in bits per second.
INT consolePortDataBits	1.3.6.1.4.1.207.8.9.1.1.7.2	INTEGER	read-write	The console port's number of data bits.
INT consolePortStopBits	1.3.6.1.4.1.207.8.9.1.1.7.3	INTEGER	read-write	The console port's number of stop bits.
INT consolePortParity	1.3.6.1.4.1.207.8.9.1.1.7.4	INTEGER	read-write	The console port's parity setting.
logParams	1.3.6.1.4.1.207.8.9.1.1.8
INT eventLogEnable	1.3.6.1.4.1.207.8.9.1.1.8.1	INTEGER	read-write	The value of this object indicates whether or not system event logging is currently enabled. Changes to this object take effect immediately.
U32 eventLogSize	1.3.6.1.4.1.207.8.9.1.1.8.2	Unsigned32	read-only	The maximum number of entries retrievable from the system event log. If the value of this object is greater than the value of the eventLogCount object, then only eventLogCount entries have been logged and can be retrieved.
U32 eventLogCount	1.3.6.1.4.1.207.8.9.1.1.8.3	Unsigned32	read-only	The total number of events logged to the system event log. If the value of this object exceeds the value of the eventLogSize object, only the most recent eventLogSize entries can be retrieved. Setting the value of this object to zero clears the device's system event log.
eventLogTable	1.3.6.1.4.1.207.8.9.1.1.8.4		not-accessible	A list of system event log entries.
eventLogEntry	1.3.6.1.4.1.207.8.9.1.1.8.4.1		not-accessible	A single system event log entry.
INT eventLogIndex	1.3.6.1.4.1.207.8.9.1.1.8.4.1.1	INTEGER	not-accessible	A unique value for each entry in the event log. Its value is between 1 and the minimum of the value of the eventLogSize and eventLogCount objects. The oldest event in the log corresponds to index 1.
STR eventLogTime	1.3.6.1.4.1.207.8.9.1.1.8.4.1.2	DisplayString	read-only	The time (according to the system clock) in human-readable form at which this system event log entry was logged.
STR eventLogDescr	1.3.6.1.4.1.207.8.9.1.1.8.4.1.3	DisplayString	read-only	A human-readable string describing the event represented by this system event log entry.
STR eventLogDetail	1.3.6.1.4.1.207.8.9.1.1.8.4.1.4	DisplayString	read-only	A human-readable string providing more detailed information about the event respresented by this system event log entry.
OCT eventLogRawEntry	1.3.6.1.4.1.207.8.9.1.1.8.4.1.5	OCTET STRING	read-only	The first 255 octets of raw, unformatted system event log entry as it appears internally.
bootParams	1.3.6.1.4.1.207.8.9.1.1.9
INT deviceReset	1.3.6.1.4.1.207.8.9.1.1.9.1	INTEGER	read-write	The value of this object returned in response to an SNMP Get or Get-Next request is always noOp(1). Changing the value of this object to reset(2) will cause the device to be reset.
tftpGroup	1.3.6.1.4.1.207.8.9.1.1.9.4
HOS tftpServerName	1.3.6.1.4.1.207.8.9.1.1.9.4.1	HostNameOrIpAddr	read-write	The name of the TFTP server from which to read or write the device's configuration files or from which to read a firmware image. The value of this object can be a fully- or partially-qualified domain name system (dns) name, or it can be an ip address in the familiar 'dotted-quad' notation. If the value of this object is a fully- or partially-qualified dns name, the device will attempt to use the Domain Name System to convert the name to an ip address before initiating a transaction with this TFTP server. This object may be set only if tftpAdminStatus has the value 'configure'.
OCT tftpUserName	1.3.6.1.4.1.207.8.9.1.1.9.4.2	OCTET STRING	read-write	The user name that makes the TFTP request. This object may be set only if tftpAdminStatus has the value 'configure'.
OCT tftpRemoteFileName	1.3.6.1.4.1.207.8.9.1.1.9.4.3	OCTET STRING	read-write	The file name of the file on the remote TFTP server. This object may be set only if tftpAdminStatus has the value 'configure'.
OCT tftpLocalFileName	1.3.6.1.4.1.207.8.9.1.1.9.4.4	OCTET STRING	read-write	The local file name of the file which is copied to or from the remote server. If this string is a 0 length string, then the value of tftpRemoteFileName shall also be used as the local file name. This object may be set only if tftpAdminStatus has the value 'configure'.
INT tftpOperation	1.3.6.1.4.1.207.8.9.1.1.9.4.5	INTEGER	read-write	When tftpOperation has the value putFile(1) when tftpAdminStatus is set to 'execute', the device attempts to copy the file identified by tftpLocalFileName to the file tfptRemoteFileName. When tftpOperation has the value getFile(2) when tftpAdminStatus is set to 'execute', the device attempts to copy the file identified by tftpRemoteFileName on the remote tftp server to the file identified by tftpLocalFileName. When tftpOperation has the value getFirmware(3) when tftpAdminStatus is set to 'execute', the device attempts to replace its firmware image with the file identified by tftpRemoteFileName. This firmware file will be used the next time the system is reset. When tftpOperation has the value putConfig(1) when tftpAdminStatus is set to 'execute', the device attempts to copy the file identified by tftpLocalFileName to the file tfptRemoteFileName. When tftpOperation has the value getConfig(2) when tftpAdminStatus is set to 'execute', the device attempts to copy the file identified by tftpRemoteFileName on the remote tftp server to the file identified by tftpLocalFileName.
INT tftpAdminState	1.3.6.1.4.1.207.8.9.1.1.9.4.6	INTEGER	read-write	This object is used to initiate a file transfer using the TFTP protocol between the local system and a remote TFTP server identified by tftpServerAddr. The file name on the remote server is identified by tftpRemoteFileName and the local file name is identified by tftpLocalFileName. The tftp operation is identified by the valu of tftpOperation. The objects tftpServerName, tftpUserName, tftpLocalFileName, tftpRemoteFileName, and tftpOperation may only be set when tftpAdminState has the value 'configure'. When tftpAdminState is set to 'execute', the operation identified by tftpOperation shall be started and the state of the operation is reflected in tftpOperationState. Setting this attribute to 'execute' when tftpOperationState is not 'inactive' has no effect on the operational state. Under normal operation tftpAdminState should only be set to 'configure' if tftpOperationState is not 'executing'. If tftpOperationState is 'executing' then the system may attempt to abort the current opertion and change the operation state to 'inactive' or not permitting the set to occur by returning the snmp error 'inconsistentValue'.
INT tftpOperationState	1.3.6.1.4.1.207.8.9.1.1.9.4.7	INTEGER	read-only	The value 'executing' reflects a transition of tftpAdminState from 'configure' to 'execute'. In the 'executing' state, the TFTP operation identified by the value of tftpOperation shall begin with the values for the objects tftpServerName, tftpUserName, tftpRemoteFileName, and tftpLocalFileName. When the TFTP operation has completed successfully, the value of tftpOperation shall be set to 'succeeded'. If the operation failed, the value shall be set to one of 'localFileProblem', 'unknownHost', 'timedOut', 'remoteFileProblem', or 'otherFailure'. Any state transition shall result in setting the tftpOperationStateChange object.
TIM tftpOperationStateChange	1.3.6.1.4.1.207.8.9.1.1.9.4.8	TimeStamp	read-only	This is the value of sysUpTime when the value of tftpOperationState changes.
STR tftpErrorMessage	1.3.6.1.4.1.207.8.9.1.1.9.4.9	DisplayString	read-only	An error message giving a brief description of the error if the tftpOperation did not succeed.

RFC description

Generic vendor-independent MIB for managing physical chassis attributes in network switches.

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