MIB-II MIB

System
Interface Number
Interface Table
Address Translation Table
IP Scalars
IP Address Table
IP Route Table
IP Network to Media Table
ICMP Counters
TCP Scalars
TCP Connection Table
UDP Counters
UDP Listener Table
SNMP Scalars

 

System

UP_ARROW138B.GIF (883 bytes)
Implementation of the System group is mandatory for all systems. If an agent is not configured to have a value for any of these variables, a string of length 0 is returned.

Field Descriptions

sysDescr A textual description of the entity. This value should include the full name and version identification of the system's hardware type, software operating-system, and networking software. It is mandatory that this only contain printable ASCII characters.
sysObjectID The vendor's authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining "what kind of box" is being managed. For example, if vendor "Flintstones, Inc." was assigned the subtree 1.3.6.1.4.1.4242, it could assign the identifier 1.3.6.1.4.1.4242.1.1 to its "Fred Router".
sysUpTime The time (in hundredths of a second) since the network management portion of the system was last re-initialized.
sysContact The textual identification of the contact person for this managed node, together with information on how to contact this person.
sysName An administratively-assigned name for this managed node. By convention, this is the node's fully-qualified domain name.
sysLocation The physical location of this node (e.g.,"telephone closet, 3rd floor").
sysServices A value which indicates the set of services that this entity primarily offers.

The value is a sum. This sum initially takes the value zero. Then, for each layer, L, in the range 1 through 7, that this node performs transactions for, 2 raised to (L - 1) is added to the sum. For example, a node that performs primarily routing functions would have a value of 4 (2^(3-1)). In contrast, a node which is a host offering application services would have a value of 72 (2^(4-1) + 2^(7-1)). Note that in the context of the Internet suite of protocols, values should be calculated accordingly:

layer   functionality

1        physical (e.g., repeaters)

2        datalink/subnetwork (e.g., bridges)

3        internet (e.g., IP gateways)

4        end-to-end(e.g., IP hosts)

7        applications (e.g., mail relays)

For systems including OSI protocols, layers 5 and 6 may also be counted.

 

Interface Number

UP_ARROW138B.GIF (883 bytes)
Implementation of the Interfaces group is mandatory for all systems.

Field Descriptions

ifNumber The number of network interfaces (regardless of their current state) present on this system.

 

Interface Table

UP_ARROW138B.GIF (883 bytes)
The Interfaces table contains information on the entity's interfaces. Each interface is thought of as being attached to a "subnetwork".  Note that this term should not be confused with "subnet", which refers to an addressing partitioning scheme used in the Internet suite of protocols.

Field Descriptions

ifIndex A unique value for each interface. Its value ranges between 1 and the value of ifNumber. 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.
ifDescr 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.
ifType The type of interface, distinguished according to the physical/link protocol(s) immediately "below" the network layer in the protocol stack.
ifMtu 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.
ifSpeed 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.
ifPhysAddress 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.
ifAdminStatus The desired state of the interface. The testing(3) state indicates that no operational packets can be passed.
ifOperStatus The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed.
ifLastChange 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.
ifInOctets The total number of octets received on the interface, including framing characters.
ifInUcastPkts The number of subnetwork-unicast packets delivered to a higher-layer protocol.
ifInNUcastPkts The number of non-unicast (i.e., subnetwork-broadcast or subnetwork-multicast) packets delivered to a higher-layer protocol.
ifInDiscards 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.
ifInErrors The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
ifInUnknownProtos The number of packets received via the interface which were discarded because of an unknown or unsupported protocol.
ifOutOctets The total number of octets transmitted out of the interface, including framing characters.
ifOutUcastPkts 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.
ifOutNUcastPkts 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.
ifOutDiscards 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.
ifOutErrors The number of outbound packets that could not be transmitted because of errors.
ifOutQLen The length of the output packet queue (in packets).
ifSpecific 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.

 

Address Translation Table

UP_ARROW138B.GIF (883 bytes)
Implementation of the Address Translation group is mandatory for all systems.Note however that this group is deprecated by MIB-II. That is, it is being included solely for compatibility with MIB-I nodes, and will most likely be excluded from MIB-III nodes. From MIB-II and onwards, each network protocol group contains its own address translation tables.

The Address Translation group contains one table which is the union across all interfaces of the translation tables for converting a NetworkAddress (e.g., an IP address) into a subnetwork-specific address. For lack of a better term, this document refers to such a subnetwork-specific address as a "physical" address.

Examples of such translation tables are: for broadcast media where ARP is in use, the translation table is equivalent to the ARP cache; or, on an X.25 network where non-algorithmic translation to X.121 addresses is required, the translation table contains the NetworkAddress to X.121 address equivalencies.

Field Descriptions

atIfIndex The interface on which this entry's equivalence is effective. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
atPhysAddress The media-dependent "physical" address.

Setting this object to a null string (one of zero length) has the effect of invaliding the corresponding entry in the atTable object. That is, it effectively disassociates the interface identified with said entry from the mapping identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant atPhysAddress object.

atNetAddress The NetworkAddress (e.g., the IP address) corresponding to the media-dependent "physical" address.

 

IP Scalars

UP_ARROW138B.GIF (883 bytes)
Implementation of the IP group is mandatory for all systems.

Field Descriptions

ipForwarding The indication of whether this entity is acting as an IP gateway in respect to the forwarding of datagrams received by, but not addressed to, this entity. IP gateways forward datagrams. IP hosts do not (except those source-routed via the host).

Note that for some managed nodes, this object may take on only a subset of the values possible. Accordingly, it is appropriate for an agent to return a "badValue" response if a management station attempts to change this object to an inappropriate value.

ipDefaultTTL The default value inserted into the Time-To-Live field of the IP header of datagrams originated at this entity, whenever a TTL value is not supplied by the transport layer protocol.
ipInReceives The total number of input datagrams received from interfaces, including those received in error.
ipInHdrErrors The number of input datagrams discarded due to errors in their IP headers, including bad checksums, version number mismatch, other format errors, time-to-live exceeded, errors discovered in processing their IP options, etc.
ipInAddrErrors The number of input datagrams discarded because the IP address in their IP header's destination field was not a valid address to be received at this entity. This count includes invalid addresses (e.g., 0.0.0.0) and addresses of unsupported Classes (e.g., Class E). For entities which are not IP Gateways and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.
ipForwDatagrams The number of input datagrams for which this entity was not their final IP destination, as a result of which an attempt was made to find a route to forward them to that final destination. In entities which do not act as IP Gateways, this counter will include only those packets which were Source-Routed via this entity, and the Source- Route option processing was successful.
ipInUnknownProtos The number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol.
ipInDiscards The number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded (e.g., for lack of buffer space). Note that this counter does not include any datagrams discarded while awaiting re-assembly.
ipInDelivers The total number of input datagrams successfully delivered to IP user-protocols (including ICMP).
ipOutRequests The total number of IP datagrams which local IP user-protocols (including ICMP) supplied to IP in requests for transmission. Note that this counter does not include any datagrams counted in ipForwDatagrams.
ipOutDiscards The number of output IP datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded (e.g., for lack of buffer space). Note that this counter would include datagrams counted in ipForwDatagrams if any such packets met this (discretionary) discard criterion.
ipOutNoRoutes The number of IP datagrams discarded because no route could be found to transmit them to their destination. Note that this counter includes any packets counted in ipForwDatagrams that meet this "no-route" criterion. Note that this includes any datagrams which a host cannot route because all of its default gateways are down.
ipReasmTimeout The maximum number of seconds that received fragments are held while they are awaiting reassembly at this entity.
ipReasmReqds The number of IP fragments received that needed to be reassembled at this entity.
ipReasmOKs The number of IP datagrams successfully re-assembled.
ipReasmFails The number of failures detected by the IP re-assembly algorithm (for whatever reason: timed out, errors, etc). Note that this is not necessarily a count of discarded IP fragments since some algorithms (notably the algorithm in RFC 815) can lose track of the number of fragments by combining them as they are received.
ipFragOKs The number of IP datagrams that have been successfully fragmented at this entity.
ipFragFails The number of IP datagrams that have been discarded because they needed to be fragmented at this entity but could not be, e.g., because their Don't Fragment flag was set.
ipFragCreates The number of IP datagram fragments that have been generated as a result of fragmentation at this entity.
ipRoutingDiscards The number of routing entries which were chosen to be discarded even though they are valid. One possible reason for discarding such an entry could be to free-up buffer space for other routing entries.

 

IP Address Table

UP_ARROW138B.GIF (883 bytes)
The IP address table contains this entity's IP addressing information

Field Descriptions

ipAdEntAddr The IP address to which this entry's addressing information pertains.
ipAdEntIfIndex The index value which uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
ipAdEntNetMask The subnet mask associated with the IP address of this entry. The value of the mask is an IP address with all the network bits set to 1 and all the hosts bits set to 0.
ipAdEntBcastAddr The value of the least-significant bit in the IP broadcast address used for sending datagrams on the (logical) interface associated with the IP address of this entry. For example, when the Internet standard all-ones broadcast address is used, the value will be 1. This value applies to both the subnet and network broadcasts addresses used by the entity on this (logical) interface.
ipAdEntReasmMaxSize The size of the largest IP datagram which this entity can re-assemble from incoming IP fragmented datagrams received on this interface.

 

IP Route Table

UP_ARROW138B.GIF (883 bytes)
The IP routing table contains an entry for each route presently known to this entity.

Field Descriptions

ipRouteDest The destination IP address of this route. An entry with a value of 0.0.0.0 is considered a default route. Multiple routes to a single destination can appear in the table, but access to such multiple entries is dependent on the table- access mechanisms defined by the network management protocol in use.
ipRouteIfIndex The index value which uniquely identifies the local interface through which the next hop of this route should be reached. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
ipRouteMetric1 The primary routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value.If this metric is not used, its value should be set to -1.
ipRouteMetric2 An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value.If this metric is not used, its value should be set to -1.
ipRouteMetric3 An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value.If this metric is not used, its value should be set to -1.
ipRouteMetric4 An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value.If this metric is not used, its value should be set to -1.
ipRouteNextHop The IP address of the next hop of this route. (In the case of a route bound to an interface which is realized via a broadcast media, the value of this field is the agent's IP address on that interface.)
ipRouteType The type of route. Note that the values direct(3) and indirect(4) refer to the notion of direct and indirect routing in the IP architecture.

Setting this object to the value invalid(2) has the effect of invalidating the corresponding entry in the ipRouteTable object. That is, it effectively disassociates the destination identified with said entry from the route identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant ipRouteType object.

ipRouteProto The routing mechanism via which this route was learned. Inclusion of values for gateway routing protocols is not intended to imply that hosts should support those protocols.
ipRouteAge The number of seconds since this route was last updated or otherwise determined to be correct. Note that no semantics of "too old" can be implied except through knowledge of the routing protocol by which the route was learned.
ipRouteMask Indicate the mask to be logical-ANDed with the destination address before being compared to the value in the ipRouteDest field. For those systems that do not support arbitrary subnet masks, an agent constructs the value of the ipRouteMask by determining whether the value of the correspondent ipRouteDest field belong to a class-A, B, or C network, and then using one of:

mask                     network

255.0.0.0                class-A

255.255.0.0            class-B

255.255.255.0        class-C

If the value of the ipRouteDest is 0.0.0.0 (a default route), then the mask value is also 0.0.0.0. It should be noted that all IP routing subsystems implicitly use this mechanism.

ipRouteMetric5 An alternate routing metric for this route. The semantics of this metric are determined by the routing-protocol specified in the route's ipRouteProto value. If this metric is not used, its value should be set to -1.
ipRouteInfo A reference to MIB definitions specific to the particular routing protocol which is responsible for this route, as determined by the value specified in the route's ipRouteProto value. 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.

 

IP Network to Media Table

UP_ARROW138B.GIF (883 bytes)
The IP Address Translation table.

The IP address translation table contain the IpAddress to"physical" address equivalencies.Some interfaces do not use translation tables for determining address equivalencies (e.g., DDN-X.25 has an algorithmic method); if all interfaces are of this type, then the Address Translation table is empty, i.e., has zero entries.

Field Descriptions

ipNetToMediaIfIndex The interface on which this entry's equivalence is effective. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
ipNetToMediaPhysAddress The media-dependent "physical" address.
ipNetToMediaNetAddress The IpAddress corresponding to the media-dependent "physical" address.
ipNetToMediaType The type of mapping.

Setting this object to the value invalid(2) has the effect of invalidating the corresponding entry in the ipNetToMediaTable. That is, it effectively disassociates the interface identified with said entry from the mapping identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant ipNetToMediaType object.

 

ICMP Counters

UP_ARROW138B.GIF (883 bytes)
Implementation of the ICMP group is mandatory for all systems

Field Descriptions

icmpInMsgs The total number of ICMP messages which the entity received. Note that this counter includes all those counted by icmpInErrors.
icmpInErrors The number of ICMP messages which the entity received but determined as having ICMP-specific errors (bad ICMP checksums, bad length, etc.).
icmpInDestUnreachs The number of ICMP Destination Unreachable messages received.
icmpInTimeExcds The number of ICMP Time Exceeded messages received.
icmpInParmProbs The number of ICMP Parameter Problem messages received.
icmpInSrcQuenchs The number of ICMP Source Quench messages received.
icmpInRedirects The number of ICMP Source Quench messages received.
icmpInEchos The number of ICMP Echo (request) messages received.
icmpInEchoReps The number of ICMP Echo Reply messages received.
icmpInTimestamps The number of ICMP Timestamp (request) messages received.
icmpInTimestampReps The number of ICMP Timestamp Reply messages received.
icmpInAddrMasks The number of ICMP Address Mask Request messages received.
icmpInAddrMaskReps The number of ICMP Address Mask Reply messages received.
icmpOutMsgs The total number of ICMP messages which this entity attempted to send. Note that this counter includes all those counted by icmpOutErrors.
icmpOutErrors The number of ICMP messages which this entity did not send due to problems discovered within ICMP such as a lack of buffers. This value should not include errors discovered outside the ICMP layer such as the inability of IP to route the resultant datagram. In some implementations there may be no types of error which contribute to this counter's value.
icmpOutDestUnreachs The number of ICMP Destination Unreachable messages sent.
icmpOutTimeExcds The number of ICMP Time Exceeded messages sent.
icmpOutParmProbs The number of ICMP Parameter Problem messages sent.
icmpOutSrcQuenchs The number of ICMP Source Quench messages sent.
icmpOutRedirects The number of ICMP Redirect messages sent. For a host, this object will always be zero, since hosts do not send redirects.
icmpOutEchos The number of ICMP Echo (request) messages sent.
icmpOutEchoReps The number of ICMP Echo Reply messages sent.
icmpOutTimestamps The number of ICMP Timestamp (request) messages sent.
icmpOutTimestampReps The number of ICMP Timestamp Reply messages sent.
icmpOutAddrMasks The number of ICMP Address Mask Request messages sent.
icmpOutAddrMaskReps The number of ICMP Address Mask Reply messages sent.

 

TCP Scalars

UP_ARROW138B.GIF (883 bytes)
Implementation of the TCP group is mandatory for all systems that implement the TCP.

Note that instances of object types that represent information about a particular TCP connection are transient; they persist only as long as the connection in question.

Field Descriptions

tcpRtoAlgorithm The algorithm used to determine the timeout value used for retransmitting unacknowledged octets.
tcpRtoMin The minimum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout.In particular, when the timeout algorithm is rsre(3), an object of this type has the semantics of the LBOUND quantity described in RFC 793.
tcpRtoMax The maximum value permitted by a TCP implementation for the retransmission timeout, measured in milliseconds. More refined semantics for objects of this type depend upon the algorithm used to determine the retransmission timeout. In particular, when the timeout algorithm is rsre(3), an object of this type has the semantics of the UBOUND quantity described in RFC 793.
tcpMaxConn The limit on the total number of TCP connections the entity can support. In entities where the maximum number of connections is dynamic, this object should contain the value -1.
tcpActiveOpens The number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.
tcpPassiveOpens The number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state.
tcpAttemptFails The number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state.
tcpEstabResets The number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.
tcpCurrEstab The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
tcpInSegs The total number of segments received, including those received in error. This count includes segments received on currently established connections.
tcpOutSegs The total number of segments sent, including those on current connections but excluding those containing only retransmitted octets.
tcpRetransSegs The total number of segments retransmitted – that is, the number of TCP segments transmitted containing one or more previously transmitted octets.
tcpInErrs The total number of segments received in error (e.g., bad TCP checksums).
tcpOutRsts The number of TCP segments sent containing the RST flag.

 

TCP Connection Table

UP_ARROW138B.GIF (883 bytes)
The TCP connection table contains information about this entity's existing TCP connections.

Field Descriptions

tcpConnState The state of this TCP connection.

The only value which may be set by a management station is deleteTCB(12). Accordingly, it is appropriate for an agent to return a "badValue" response if a management station attempts to set this object to any other value.

If a management station sets this object to the value deleteTCB(12), then this has the effect of deleting the TCB (as defined in RFC 793) of the corresponding connection on the managed node, resulting in immediate termination of the connection.

As an implementation-specific option, a RST segment may be sent from the managed node to the other TCP endpoint (note however that RST segments are not sent reliably).

tcpConnLocalAddress The local IP address for this TCP connection.In the case of a connection in the listen state which is willing to accept connections for any IP interface associated with the node, the value 0.0.0.0 is used.
tcpConnLocalPort The local port number for this TCP connection.
tcpConnRemAddress The remote IP address for this TCP connection.
tcpConnRemPort The remote port number for this TCP connection.

 

UDP Counters

UP_ARROW138B.GIF (883 bytes)
Implementation of the UDP group is mandatory for all systems which implement the UDP.

Field Descriptions

udpInDatagrams The total number of UDP datagrams delivered to UDP users.
udpNoPorts The total number of received UDP datagrams for which there was no application at the destination port.
udpInErrors The number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port.
udpOutDatagrams The total number of UDP datagrams sent from this entity.

 

UDP Listener Table

UP_ARROW138B.GIF (883 bytes)
The UDP listener table contains information about this entity's UDP end-points on which a local application is currently accepting datagrams.

Field Descriptions

udpLocalAddress The local IP address for this UDP listener.In the case of a UDP listener which is willing to accept datagrams for any IP interface associated with the node, the value 0.0.0.0 is used.
udpLocalPort The local port number for this UDP listener.

 

SNMP Scalars

UP_ARROW138B.GIF (883 bytes)
Implementation of the SNMP group is mandatory for all systems which support an SNMP protocol entity.  Some of  the objects defined below will be zero-valued in those SNMP implementations that are optimized to support only those functions specific to either a management agent or a management station. In particular, it should be observed that the objects below refer to an SNMP entity, and there may be several SNMP entities residing on a managed node (e.g., if the node is hosting acting as a management station).

Field Descriptions

snmpInPkts The total number of Messages delivered to the SNMP entity from the transport service.
snmpOutPkts The total number of SNMP Messages which were passed from the SNMP protocol entity to the transport service.
snmpInBadVersions The total number of SNMP Messages which were delivered to the SNMP protocol entity and were for an unsupported SNMP version.
snmpInBadCommunityNames The total number of SNMP Messages delivered to the SNMP protocol entity which used a SNMP community name not known to said entity.
snmpInBadCommunityUses The total number of SNMP Messages delivered to the SNMP protocol entity which represented an SNMP operation which was not allowed by the SNMP community named in the Message.
snmpInASNParseErrs The total number of ASN.1 or BER errors encountered by the SNMP protocol entity when decoding received SNMP Messages.
snmpInTooBigs The total number of SNMP PDUs which were delivered to the SNMP protocol entity and for which the value of the error-status field is "tooBig".
snmpInNoSuchNames The total number of SNMP PDUs which were delivered to the SNMP protocol entity and for which the value of the error-status field is "noSuchName".
snmpInBadValues The total number of SNMP PDUs which were delivered to the SNMP protocol entity and for which the value of the error-status field is "badValue".
snmpInReadOnlys The total number valid SNMP PDUs which were delivered to the SNMP protocol entity and for which the value of the error-status field is "readOnly". It should be noted that it is a protocol error to generate an SNMP PDU which contains the value "readOnly" in the error-status field, as such this object is provided as a means of detecting incorrect implementations of the SNMP.
snmpInGenErrs The total number of SNMP PDUs which were delivered to the SNMP protocol entity and for which the value of the error-status field is "genErr".
snmpInTotalReqVars The total number of MIB objects which have been retrieved successfully by the SNMP protocol entity as the result of receiving valid SNMP Get-Request and Get-Next PDUs.
snmpInTotalSetVars The total number of MIB objects which have been altered successfully by the SNMP protocol entity as the result of receiving valid SNMP Set-Request PDUs.
snmpInGetRequests The total number of SNMP Get-Request PDUs which have been accepted and processed by the SNMP protocol entity.
snmpInGetNexts The total number of SNMP Get-Next PDUs which have been accepted and processed by the SNMP protocol entity.
snmpInSetRequests The total number of SNMP Set-Request PDUs which have been accepted and processed by the SNMP protocol entity.
snmpInGetResponses The total number of SNMP Get-Response PDUs which have been accepted and processed by the SNMP protocol entity.
snmpInTraps The total number of SNMP Trap PDUs which have been accepted and processed by the SNMP protocol entity.
snmpOutTooBigs The total number of SNMP PDUs which were generated by the SNMP protocol entity and for which the value of the error-status field is "tooBig".
snmpOutNoSuchNames The total number of SNMP PDUs which were generated by the SNMP protocol entity and for which the value of the error-status is "noSuchName".
snmpOutBadValues The total number of SNMP PDUs which were generated by the SNMP protocol entity and for which the value of the error-status field is "badValue".
snmpOutGenErrs The total number of SNMP PDUs which were generated by the SNMP protocol entity and for which the value of the error-status field is "genErr".
snmpOutGetRequests The total number of SNMP Get-Request PDUs which have been generated by the SNMP protocol entity.
snmpOutGetNexts The total number of SNMP Get-Next PDUs which have been generated by the SNMP protocol entity.
snmpOutSetRequests The total number of SNMP Set-Request PDUs which have been generated by the SNMP protocol entity.
snmpOutGetResponses The total number of SNMP Get-Response PDUs which have been generated by the SNMP protocol entity.
snmpOutTraps The total number of SNMP Trap PDUs which have been generated by the SNMP protocol entity.
snmpEnableAuthenTraps Indicates whether the SNMP agent process is permitted to generate authentication-failure traps. The value of this object overrides any configuration information; as such, it provides a means whereby all authentication-failure traps may be disabled.

Note that it is strongly recommended that this object be stored in non-volatile memory so that it remains constant between re-initializations of the network management system.