CNT21-MIB

All MIBs › CNT21-MIB

Organization: Computer Network Technology Corporation

Last Updated: 2001-10-23

Category: Fibre Channel and Storage, Vendor: CNT

Description: Manages CNT 2.1 series Fibre Channel switch hardware and port configuration objects.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CNT21-MIB?

CNT21-MIB is a proprietary MIB from CNT (Computer Network Technology) for their 2.1-series Fibre Channel switch product line, covering hardware and port-level configuration for FC switching gear used in SAN environments. It exposes interface/port configuration objects and likely status fields for the switch's Fibre Channel ports and internal hardware modules. Its monitoring value centers on hardware status: verifying that Fibre Channel ports and switch hardware components are operationally up and correctly configured, which is critical since FC switch failures directly disrupt storage-area-network connectivity. As a switch-hardware MIB it plausibly builds on general Fibre Channel/interface conventions but no explicit dependency on another named MIB is evident from the module text. It is deployed in enterprise SAN environments where CNT (later part of McDATA/Brocade lineage) FC switches interconnect servers and storage arrays. Engineers can download the CNT21-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CNT21-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

CNT 2.1-series Fibre Channel SAN switches

Monitoring Examples

No sample objects were supplied for this MIB, so specifics are inferred: an operator would likely poll a per-port interface table (following a cntIf*Table pattern implied by 'CNT Interface MIB') to check port operational/administrative status and hardware configuration for each Fibre Channel port. A port unexpectedly reporting a down or degraded state would signal a failed SFP, cable, or port hardware issue disrupting SAN connectivity for attached hosts or storage. This is a plausible inference rather than a confirmed table structure since no object names were provided.

What Can Be Monitored

Fibre Channel port operational status
port hardware configuration
switch hardware component state

Imported Objects

From CNT2-MIB

cnt2Mib2

OBJECT-IDENTITY

From IANAifType-MIB

IANAifType

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
Gauge
TimeTicks
enterprises

From RFC1213-MIB

DisplayString
PhysAddress

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
Unsigned32

From SNMPv2-TC

TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cnt2XIfInOctets OID:

Select a CNT 2.1-series Fibre Channel SAN switch (legacy) 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 cnt2XIfInOctets 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 total number of octets received on the interface, including framing characters. 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 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
INT cnt2IfAdminStatus	1.3.6.1.4.1.333.2.1.2.2.1.8	INTEGER	read-write	The desired state of the interface. The testing(3) state indicates that no operational packets can be passed.
STR cnt2IfDescr	1.3.6.1.4.1.333.2.1.2.2.1.3	DisplayString	read-only	A textual string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the hardware interface.
cnt2IfEntry	1.3.6.1.4.1.333.2.1.2.2.1		not-accessible	An interface entry containing objects at the subnetwork layer and below for a particular interface.
I32 cnt2IfIndex	1.3.6.1.4.1.333.2.1.2.2.1.2	Integer32	read-only	A unique value for each interface. Its value ranges between 1 and the value of cnt2IfNumber. The value for each interface must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
C32 cnt2IfInDiscards	1.3.6.1.4.1.333.2.1.2.2.1.14	Counter32	read-only	The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.
C32 cnt2IfInErrors	1.3.6.1.4.1.333.2.1.2.2.1.15	Counter32	read-only	The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
C32 cnt2IfInNUcastPkts	1.3.6.1.4.1.333.2.1.2.2.1.13	Counter32	read-only	The number of non-unicast (i.e., subnetwork- broadcast or subnetwork-multicast) packets delivered to a higher-layer protocol.
C32 cnt2IfInOctets	1.3.6.1.4.1.333.2.1.2.2.1.11	Counter32	read-only	The total number of octets received on the interface, including framing characters.
C32 cnt2IfInUcastPkts	1.3.6.1.4.1.333.2.1.2.2.1.12	Counter32	read-only	The number of subnetwork-unicast packets delivered to a higher-layer protocol.
C32 cnt2IfInUnknownProtos	1.3.6.1.4.1.333.2.1.2.2.1.16	Counter32	read-only	The number of packets received via the interface which were discarded because of an unknown or unsupported protocol.
TIK cnt2IfLastChange	1.3.6.1.4.1.333.2.1.2.2.1.10	TimeTicks	read-only	The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re- initialization of the local network management subsystem, then this object contains a zero value.
I32 cnt2IfMtu	1.3.6.1.4.1.333.2.1.2.2.1.5	Integer32	read-only	The size of the largest datagram which can be sent/received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.
I32 cnt2IfNum	1.3.6.1.4.1.333.2.1.2.1.1.2	Integer32	read-only	The number of network interfaces (regardless of their current state) present on this slot.
cnt2IfNumEntry	1.3.6.1.4.1.333.2.1.2.1.1		not-accessible	An interface entry containing objects at the subnetwork layer and below for a particular interface.
I32 cnt2IfNumIndex	1.3.6.1.4.1.333.2.1.2.1.1.1	Integer32	read-only	The slot number 1-12 for this table entry.
cnt2IfNumTable	1.3.6.1.4.1.333.2.1.2.1		not-accessible	A list of interface entries. The number of entries is given by the value of cnt2IfNumber.
INT cnt2IfOperStatus	1.3.6.1.4.1.333.2.1.2.2.1.9	INTEGER	read-only	The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed.
C32 cnt2IfOutDiscards	1.3.6.1.4.1.333.2.1.2.2.1.20	Counter32	read-only	The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space.
C32 cnt2IfOutErrors	1.3.6.1.4.1.333.2.1.2.2.1.21	Counter32	read-only	The number of outbound packets that could not be transmitted because of errors.
C32 cnt2IfOutNUcastPkts	1.3.6.1.4.1.333.2.1.2.2.1.19	Counter32	read-only	The total number of packets that higher-level protocols requested be transmitted to a non- unicast (i.e., a subnetwork-broadcast or subnetwork-multicast) address, including those that were discarded or not sent.
C32 cnt2IfOutOctets	1.3.6.1.4.1.333.2.1.2.2.1.17	Counter32	read-only	The total number of octets transmitted out of the interface, including framing characters.
U32 cnt2IfOutQLen	1.3.6.1.4.1.333.2.1.2.2.1.22	Unsigned32	read-only	The length of the output packet queue (in packets).
C32 cnt2IfOutUcastPkts	1.3.6.1.4.1.333.2.1.2.2.1.18	Counter32	read-only	The total number of packets that higher-level protocols requested be transmitted to a subnetwork-unicast address, including those that were discarded or not sent.
OCT cnt2IfPhysAddress	1.3.6.1.4.1.333.2.1.2.2.1.7	OCTET STRING	read-only	The interface's address at the protocol layer immediately `below' the network layer in the protocol stack. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length.
I32 cnt2IfSlotIndex	1.3.6.1.4.1.333.2.1.2.2.1.1	Integer32	read-only	The slot number 1-12 for this table entry.
OID cnt2IfSpecific	1.3.6.1.4.1.333.2.1.2.2.1.23	OBJECT IDENTIFIER	read-only	A reference to MIB definitions specific to the particular media being used to realize the interface. For example, if the interface is realized by an ethernet, then the value of this object refers to a document defining objects specific to ethernet. If this information is not present, its value should be set to the OBJECT IDENTIFIER { 0 0 }, which is a syntatically valid object identifier, and any conformant implementation of ASN.1 and BER must be able to generate and recognize this value.
U32 cnt2IfSpeed	1.3.6.1.4.1.333.2.1.2.2.1.6	Unsigned32	read-only	An estimate of the interface's current bandwidth in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth.
cnt2IfTable	1.3.6.1.4.1.333.2.1.2.2		not-accessible	A list of interface entries. The number of entries is given by the value of cnt2IfNumber.
INT cnt2IfType	1.3.6.1.4.1.333.2.1.2.2.1.4	INTEGER	read-only	The type of interface, distinguished according to the physical/link protocol(s) immediately `below' the network layer in the protocol stack.
cnt2Interface	1.3.6.1.4.1.333.2.1.2			This defines the CNT Interface MIB.
cnt2Interfaces	1.3.6.1.4.1.333.2.1.2
INT cnt2XIfAdminStatus	1.3.6.1.4.1.333.2.1.2.3.1.10	INTEGER	read-write	The desired state of the interface. The testing(3) state indicates that no operational packets can be passed.
STR cnt2XIfAlias	1.3.6.1.4.1.333.2.1.2.3.1.16	DisplayString	read-write	This object is an 'alias' name for the interface as specified by a network manager, and provides a non- volatile 'handle' for the interface. On the first instantiation of an interface, the value of ifAlias associated with that interface is the zero-length string. As and when a value is written into an instance of ifAlias through a network management set operation, then the agent must retain the supplied value in the ifAlias instance associated with the same interface for as long as that interface remains instantiated, including across all re- initializations/reboots of the network management system, including those which result in a change of the interface's ifIndex value. An example of the value which a network manager might store in this object for a WAN interface is the (Telco's) circuit number/identifier of the interface. Some agents may support write-access only for interfaces having particular values of ifType. An agent which supports write access to this object is required to keep the value in non-volatile storage, but it may limit the length of new values depending on how much storage is already occupied by the current values for other interfaces.
INT cnt2XIfCntType	1.3.6.1.4.1.333.2.1.2.3.1.6	INTEGER	read-only	The type of interface, distinguished according to the physical/link protocol(s) immediately `below' the network layer in the protocol stack.
T/F cnt2XIfConnectorType	1.3.6.1.4.1.333.2.1.2.3.1.15	TruthValue	read-only	This object has the value 'true(1)' if the interface sublayer has a physical connector and the value 'false(2)' otherwise.
TIM cnt2XIfCounterDiscontinuityTime	1.3.6.1.4.1.333.2.1.2.3.1.30	TimeStamp	read-only	The value of sysUpTime on the most recent occasion at which any one or more of this interface's counters suffered a discontinuity. The relevant counters are the specific instances associated with this interface of any Counter32 or Counter64 object contained in the ifTable or ifXTable. If no such discontinuities have occurred since the last re-initialization of the local management subsystem, then this object contains a zero value.
STR cnt2XIfDescr	1.3.6.1.4.1.333.2.1.2.3.1.3	DisplayString	read-only	A textual string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the hardware interface.
cnt2XIfEntry	1.3.6.1.4.1.333.2.1.2.3.1		not-accessible	An interface entry containing objects at the subnetwork layer and below for a particular interface.
IAN cnt2XIfIANAType	1.3.6.1.4.1.333.2.1.2.3.1.5	IANAifType	read-only	The type of interface. Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA), through updating the syntax of the IANAifType textual convention.
C32 cnt2XIfInBroadcastPkts	1.3.6.1.4.1.333.2.1.2.3.1.20	Counter32	read-only	The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were addressed to a broadcast address at this sub-layer. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
I32 cnt2XIfIndex	1.3.6.1.4.1.333.2.1.2.3.1.2	Integer32	read-only	A unique value for each interface. Its value ranges between 1 and the value of cnt2IfNumber. The value for each interface must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
C32 cnt2XIfInDiscards	1.3.6.1.4.1.333.2.1.2.3.1.21	Counter32	read-only	The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.
C32 cnt2XIfInErrors	1.3.6.1.4.1.333.2.1.2.3.1.22	Counter32	read-only	The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
C32 cnt2XIfInMulticastPkts	1.3.6.1.4.1.333.2.1.2.3.1.19	Counter32	read-only	The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were addressed to a multicast address at this sub-layer. For a MAC layer protocol, this includes both Group and Functional addresses. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
C64 cnt2XIfInOctetsEx	1.3.6.1.4.1.333.2.1.2.3.1.17	Counter64	read-only	The total number of octets received on the interface, including framing characters.
C32 cnt2XIfInUcastPkts	1.3.6.1.4.1.333.2.1.2.3.1.18	Counter32	read-only	The number of subnetwork-unicast packets delivered to a higher-layer protocol.
C32 cnt2XIfInUnknownProtos	1.3.6.1.4.1.333.2.1.2.3.1.23	Counter32	read-only	The number of packets received via the interface which were discarded because of an unknown or unsupported protocol.
TIK cnt2XIfLastChange	1.3.6.1.4.1.333.2.1.2.3.1.12	TimeTicks	read-only	The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re- initialization of the local network management subsystem, then this object contains a zero value.
INT cnt2XIfLinkUpDownTrapEnable	1.3.6.1.4.1.333.2.1.2.3.1.13	INTEGER	read-write	Indicates whether linkUp/linkDown traps should be generated for this interface. By default, this object should have the value enabled(1) for interfaces which do not operate on 'top' of any other interface (as defined in the ifStackTable), and disabled(2) otherwise.
I32 cnt2XIfMtu	1.3.6.1.4.1.333.2.1.2.3.1.7	Integer32	read-only	The size of the largest datagram which can be sent/received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.
STR cnt2XIfName	1.3.6.1.4.1.333.2.1.2.3.1.4	DisplayString	read-only	A textual string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the hardware interface.
INT cnt2XIfOperStatus	1.3.6.1.4.1.333.2.1.2.3.1.11	INTEGER	read-only	The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed.
C32 cnt2XIfOutBroadcastPkts	1.3.6.1.4.1.333.2.1.2.3.1.27	Counter32	read-only	The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a broadcast address at this sub-layer, including those that were discarded or not sent. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
C32 cnt2XIfOutDiscards	1.3.6.1.4.1.333.2.1.2.3.1.28	Counter32	read-only	The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space.
C32 cnt2XIfOutErrors	1.3.6.1.4.1.333.2.1.2.3.1.29	Counter32	read-only	The number of outbound packets that could not be transmitted because of errors.
C32 cnt2XIfOutMulticastPkts	1.3.6.1.4.1.333.2.1.2.3.1.26	Counter32	read-only	The total number of packets that higher-level protocols requested be transmitted to a non- unicast (i.e., a subnetwork-broadcast or subnetwork-multicast) address, including those that were discarded or not sent.
C64 cnt2XIfOutOctets	1.3.6.1.4.1.333.2.1.2.3.1.24	Counter64	read-only	The total number of octets transmitted out of the interface, including framing characters.
C32 cnt2XIfOutUcastPkts	1.3.6.1.4.1.333.2.1.2.3.1.25	Counter32	read-only	The total number of packets that higher-level protocols requested be transmitted to a subnetwork-unicast address, including those that were discarded or not sent.
OCT cnt2XIfPhysAddress	1.3.6.1.4.1.333.2.1.2.3.1.9	OCTET STRING	read-only	The interface's address at the protocol layer immediately `below' the network layer in the protocol stack. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length.
T/F cnt2XIfPromiscuousMode	1.3.6.1.4.1.333.2.1.2.3.1.14	TruthValue	read-write	This object has a value of false(2) if this interface only accepts packets/frames that are addressed to this station. This object has a value of true(1) when the station accepts all packets/frames transmitted on the media. The value true(1) is only legal on certain types of media. If legal, setting this object to a value of true(1) may require the interface to be reset before becoming effective. The value of ifPromiscuousMode does not affect the reception of broadcast and multicast packets/frames by the interface.
I32 cnt2XIfSlotIndex	1.3.6.1.4.1.333.2.1.2.3.1.1	Integer32	read-only	The slot number 1-4 for this table entry.
U32 cnt2XIfSpeed	1.3.6.1.4.1.333.2.1.2.3.1.8	Unsigned32	read-only	An estimate of the interface's current bandwidth in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth.
cnt2XIfTable	1.3.6.1.4.1.333.2.1.2.3		not-accessible	A list of interface entries. The number of entries is given by the value of cnt2XIfNumber.

RFC description

Enterprise MIB module for Compact Networks devices used for network management and SNMP monitoring, included in various network monitoring platforms and management systems.

Start monitoring CNT 2.1-series Fibre Channel SAN switch (legacy) 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 CNT21-MIB