4.1.2 Description of standard MIB objects
This subsection describes the standard MIB objects in each group. The tables in this subsection use the following legend:
- Legend:
-
--: Not applicable
Details about the contents of the objects can be found in RFC 1213, RFC 1285, and RFC 1398.
- Organization of this subsection
(1) System group
The following table describes the standard MIB objects in the System group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
sysDescr |
System-related description |
-- |
|
2 |
sysObjectID |
Value of the object ID assigned to the system |
-- |
|
3 |
sysUpTime |
The time elapsed since the system was last started |
Hundredths of a second |
|
4 |
sysContact |
System administrator contact information |
-- |
|
5 |
sysName# |
System's host name |
-- |
|
6 |
sysLocation |
System's installation location |
-- |
|
7 |
sysServices |
Services provided by the system (OSI reference layer) |
-- |
- Legend:
-
--: Not applicable
- #
-
For details about how to use a new host name as the sysName value after you have installed SNMP Agent and renamed the host, see 3.7.4 Notes about renaming a host.
(2) Interfaces group
The following table describes the standard MIB objects in the Interfaces group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
ifNumber |
The number of network interfaces. |
-- |
|
2 |
ifTable |
An interface entity information table. |
-- |
|
2.1 |
ifEntry |
An interface entry containing objects at the subnetwork layer and below for a particular interface. |
-- |
|
2.1.1 |
ifIndex |
A unique value for each interface. |
-- |
|
2.1.2 |
ifDescr |
A textual string containing information about the interface. |
-- |
|
2.1.3 |
ifType |
The type of interface. other (1), regular1822 (2), hdh1822 (3), ddn-x25 (4), rfc877x25 (5), ethernet-csmacd (6), iso88023-csmacd (7), iso88024-tokenBus (8), iso88025-tokenRing (9), iso88026-man (10), starLan (11), proteon-,10Mbit (12), proteon-80Mbit (13), hyperchannel (14), fddi (15), lapb (16), sdlc (17), dsl (18), el (19), basicISDN (20), primaryISDN (21), propPintToPointSerial (22), ppp (23), softwareLoopback (24), eon (25), ethernet-3Mbit (26), nsip (27), slip (28), ultra (29), ds3 (30), sip (31), frame-relay (32) |
-- |
|
2.1.4 |
ifMtu |
The size of the largest datagram which can be sent/received on the interface, specified in octets. |
Octets |
|
2.1.5 |
ifSpeed |
An estimate of the interface's current bandwidth in bits per second. |
Bits/ second |
|
2.1.6 |
ifPhysAddress |
The interface's address at the protocol layer immediately `below' the network layer in the protocol stack. |
-- |
|
2.1.7 |
ifAdminStatus |
The desired state of the interface. up (1), down (2), testing (3) |
-- |
|
2.1.8 |
ifOperStatus |
The current operational state of the interface. up (1), down (2), testing (3) |
-- |
|
2.1.9 |
ifLastChange |
The value of sysUpTime at the time the interface entered its current operational state. |
Hundredths of a second |
|
2.1.10 |
ifInOctets |
The total number of octets received on the interface, including framing characters. |
Octets |
|
2.1.11 |
ifInUcastPkts |
The number of subnetwork-unicast packets delivered to a higher-layer protocol. |
Packets |
|
2.1.12 |
ifInNUcastPkts |
The number of subnetwork-broadcast packets or multicast packets delivered to a higher-layer protocol. |
Packets |
|
2.1.13 |
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. |
Packets |
|
2.1.14 |
ifInErrors |
The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. |
Packets |
|
2.1.15 |
ifInUnknownProtos |
The number of packets received via the interface which were discarded because of an unknown or unsupported protocol. |
Packets |
|
2.1.16 |
ifOutOctets |
The total number of octets transmitted out of the interface, including framing characters. |
Octets |
|
2.1.17 |
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. |
Packets |
|
2.1.18 |
ifOutNUcastPkts |
The total number of packets that higher-level protocols requested be transmitted to a non-unicast (that is, a subnetwork-broadcast or subnetwork-multicast) address, including those that were discarded or not sent. |
Packets |
|
2.1.19 |
ifOutDiscards |
The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. |
Packets |
|
2.1.20 |
ifOutErrors |
The number of outbound packets that could not be transmitted because of errors. |
Packets |
|
2.1.21 |
ifOutQLen |
The length of the output packet queue (in packets). |
Packets |
|
2.1.22 |
ifSpecific |
A reference to MIB definitions specific to the particular media being used to realize the interface. |
-- |
(3) AddressTranslation group
The following table describes the standard MIB objects in the AddressTranslation group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
atTable |
The Address Translation tables contain the NetworkAddress to physical address equivalence. |
-- |
|
1.1 |
atEntry |
Each entry contains one NetworkAddress to physical address equivalence. |
-- |
|
1.1.1 |
atIfIndex |
The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex. |
-- |
|
1.1.2 |
atPhysAddress |
The media-dependent physical address. |
-- |
|
1.1.3 |
atNetAddress |
The NetworkAddress corresponding to the media-dependent physical address. |
-- |
(4) IP group
The following table describes the standard MIB objects in the IP group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
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. forwarding (1), not-forwarding (2) |
-- |
|
2 |
ipDefaultTTL |
The default value inserted into the Time-To-Live field of the IP header of datagrams originated at this entity. |
-- |
|
3 |
ipInReceives |
The total number of input datagrams received from interfaces, including those received in error. |
Datagrams |
|
4 |
ipInHdrErrors |
The number of input datagrams discarded due to errors in their IP headers. |
Datagrams |
|
5 |
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. |
Datagrams |
|
6 |
ipForwDatagrams |
The number of input datagrams for which this entity was not their final IP destination. |
Datagrams |
|
7 |
ipInUnknownProtos |
The number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol. |
Datagrams |
|
8 |
ipInDiscards |
The number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded. |
Datagrams |
|
9 |
ipInDelivers |
The total number of input datagrams successfully delivered to IP user-protocols (including ICMP). |
Datagrams |
|
10 |
ipOutRequests |
The total number of IP datagrams which local IP user-protocols (including ICMP) supplied to IP in requests for transmission. |
Datagrams |
|
11 |
ipOutDiscards |
The number of output IP datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded. |
Datagrams |
|
12 |
ipOutNoRoutes |
The number of IP datagrams discarded because no route could be found to transmit them to their destination. |
Datagrams |
|
13 |
ipReasmTimeout |
The maximum number of seconds which received fragments are held while they are awaiting reassembly at this entity. |
Seconds |
|
14 |
ipReasmReqds |
The number of IP fragments received which needed to be reassembled at this entity. |
-- |
|
15 |
ipReasmOKs |
The number of IP datagrams successfully reassembled. |
-- |
|
16 |
ipReasmFails |
The number of failures detected by the IP reassembly algorithm. |
-- |
|
17 |
ipFragOKs |
The number of IP datagrams that have been successfully fragmented at this entity. |
Datagrams |
|
18 |
ipFragFails |
The number of IP datagrams that have been discarded because they needed to be fragmented at this entity. |
Datagrams |
|
19 |
ipFragCreates |
The number of IP datagram fragments that have been generated as a result of fragmentation at this entity. |
-- |
|
20 |
ipAddrTable |
The table of addressing information relevant to this entity's IP addresses. |
-- |
|
20.1 |
ipAddrEntry |
The addressing information for one of this entity's IP addresses. |
-- |
|
20.1.1 |
ipAdEntAddr |
The IP address to which this entry's addressing information pertains. |
-- |
|
20.1.2 |
ipAdEntIfIndex |
The index value which uniquely identifies the interface to which this entry is applicable. |
-- |
|
20.1.3 |
ipAdEntNetMask |
The subnet mask associated with the IP address of this entry. |
-- |
|
20.1.4 |
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. |
-- |
|
20.1.5 |
ipAdEntReasmMaxSize |
The maximum size of the IP datagram into which the received IP datagram fragments can be reassembled. |
Datagrams |
|
21 |
ipRouteTable |
This entity's IP Routing table. |
-- |
|
21.1 |
ipRouteEntry |
A route to a particular destination. |
-- |
|
21.1.1 |
ipRouteDest |
The destination IP address of this route. |
-- |
|
21.1.2 |
ipRouteIfIndex |
The index value which uniquely identifies the local interface through which the next hop of this route will be reached. |
-- |
|
21.1.3 |
ipRouteMetric1 |
The primary routing metric for this route. |
-- |
|
21.1.4 |
ipRouteMetric2 |
An alternate routing metric for this route. |
-- |
|
21.1.5 |
ipRouteMetric3 |
An alternate routing metric for this route. |
-- |
|
21.1.6 |
ipRouteMetric4 |
An alternate routing metric for this route. |
-- |
|
21.1.7 |
ipRouteNextHop |
The IP address of the next hop of this route. |
-- |
|
21.1.8 |
ipRouteType |
The type of route. other (1), invalid (2), direct (3), indirect (4) |
-- |
|
21.1.9 |
ipRouteProto |
The routing mechanism via which this route was learned. other (1), local (2), netmgmt (3), icmp (4), egp (5), ggp (6), hello (7), rip (8), is-is (9), es-is (10), cisco-Igrp (11), bbnSpfIgp (12), ospf (13), bgp (14) |
-- |
|
21.1.10 |
ipRouteAge |
The number of seconds since this route was last updated or otherwise determined to be correct. |
Seconds |
|
21.1.11 |
ipRouteMask |
The mask value to be logical-AND-ed with the destination address. |
-- |
|
21.1.12 |
ipRouteMetric5 |
An alternate routing metric for this route. |
-- |
|
21.1.13 |
ipRouteInfo |
A reference to MIB definitions specific to the particular routing protocol. |
-- |
|
22 |
ipNetToMediaTable |
The IP Address Translation table used for mapping from IP addresses to physical addresses. |
-- |
|
22.1 |
ipNetToMediaEntry |
Each entry contains one IpAddress to physical address equivalence. |
-- |
|
22.1.1 |
ipNetToMediaIfIndex |
The interface on which this entry's equivalence is effective. |
-- |
|
22.1.2 |
ipNetToMediaPhysAddress |
The media-dependent physical address. |
-- |
|
22.1.3 |
ipNetToMediaNetAddress |
The IpAddress corresponding to the media-dependent physical address. |
-- |
|
22.1.4 |
ipNetToMediaType |
The type of mapping. other (1), invalid (2), dynamic (3), static (4) |
-- |
|
23 |
ipRoutingDiscards |
The number of routing entries which were chosen to be discarded even though they are valid. |
Entries |
(5) ICMP group
The following table describes the standard MIB objects in the ICMP group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
icmpInMsgs |
The total number of ICMP messages which the entity received. |
Messages |
|
2 |
icmpInErrors |
The number of ICMP messages which the entity received. |
Messages |
|
3 |
icmpInDestUnreachs |
The number of ICMP Destination Unreachable messages received. |
Messages |
|
4 |
icmpInTimeExcds |
The number of ICMP Time Exceeded messages received. |
Messages |
|
5 |
icmpInParmProbs |
The number of ICMP Parameter Problem messages received. |
Messages |
|
6 |
icmpInSrcQuenchs |
The number of ICMP Source Quench messages received. |
Messages |
|
7 |
icmpInRedirects |
The number of ICMP Redirect messages received. |
Messages |
|
8 |
icmpInEchos |
The number of ICMP Echo (request) messages received. |
Messages |
|
9 |
icmpInEchoReps |
The number of ICMP Echo Reply messages received. |
Messages |
|
10 |
icmpInTimestamps |
The number of ICMP Timestamp (request) messages received. |
Messages |
|
11 |
icmpInTimestampReps |
The number of ICMP Timestamp Reply messages received. |
Messages |
|
12 |
icmpInAddrMasks |
The number of ICMP Address Mask Request messages received. |
Messages |
|
13 |
icmpInAddrMaskReps |
The number of ICMP Address Mask Reply messages received. |
Messages |
|
14 |
icmpOutMsgs |
The total number of ICMP messages which this entity attempted to send. |
Messages |
|
15 |
icmpOutErrors |
The number of ICMP messages which this entity did not send due to problems discovered within ICMP such as a lack of buffers. |
Messages |
|
16 |
icmpOutDestUnreachs |
The number of ICMP Destination Unreachable messages sent. |
Messages |
|
17 |
icmpOutTimeExcds |
The number of ICMP Time Exceeded messages sent. |
Messages |
|
18 |
icmpOutParmProbs |
The number of ICMP Parameter Problem messages sent. |
Messages |
|
19 |
icmpOutSrcQuenchs |
The number of ICMP Source Quench messages sent. |
Messages |
|
20 |
icmpOutRedirects |
The number of ICMP Redirect messages sent. |
Messages |
|
21 |
icmpOutEchos |
The number of ICMP Echo (request) messages sent. |
Messages |
|
22 |
icmpOutEchoReps |
The number of ICMP Echo Reply messages sent. |
Messages |
|
23 |
icmpOutTimestamps |
The number of ICMP Timestamp (request) messages sent. |
Messages |
|
24 |
icmpOutTimestampReps |
The number of ICMP Timestamp Reply messages sent. |
Messages |
|
25 |
icmpOutAddrMasks |
The number of ICMP Address Mask Request messages sent. |
Messages |
|
26 |
icmpOutAddrMaskReps |
The number of ICMP Address Mask Reply messages sent. |
Messages |
(6) TCP group
The following table describes the standard MIB objects in the TCP group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
tcpRtoAlgorithm |
The algorithm used to determine the timeout value used for retransmitting unacknowledged octets. other (1), constant (2), rsre (3), vanj (4) |
-- |
|
2 |
tcpRtoMin |
The minimum value permitted by a TCP implementation for the retransmission timeout. |
Milliseconds |
|
3 |
tcpRtoMax |
The maximum value permitted by a TCP implementation for the retransmission timeout. |
Milliseconds |
|
4 |
tcpMaxConn |
The limit on the total number of TCP connections the entity can support. |
-- |
|
5 |
tcpActiveOpens |
The number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state. |
-- |
|
6 |
tcpPassiveOpens |
The number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state. |
-- |
|
7 |
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. |
-- |
|
8 |
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. |
-- |
|
9 |
tcpCurrEstab |
The number of TCP connections for which the current state is either ESTABLISHED or CLOSE- WAIT. |
-- |
|
10 |
tcpInSegs |
The total number of segments received. |
Segments |
|
11 |
tcpOutSegs |
The total number of segments sent. |
Segments |
|
12 |
tcpRetransSegs |
The total number of segments retransmitted. |
Segments |
|
13 |
tcpConnTable |
A table containing TCP connection-specific information. |
-- |
|
13.1 |
tcpConnEntry |
Information about a particular current TCP connection. tcpConnLocalAddress tcpConnLocalPort tcpConnRemAddress tcpConnRemPort |
-- |
|
13.1.1 |
tcpConnState |
The state of this TCP connection. closed (1), listen (2), synSent (3), synReceived (4), established (5), finWait1 (6), finWait2 (7), closeWait (8), lastAck (9), closing (10), timeWait (11), deleteTCB (12) |
-- |
|
13.1.2 |
tcpConnLocalAddress |
The local IP address for this TCP connection. |
-- |
|
13.1.3 |
tcpConnLocalPort |
The local port number for this TCP connection. |
-- |
|
13.1.4 |
tcpConnRemAddress |
The remote IP address for this TCP connection. |
-- |
|
13.1.5 |
tcpConnRemPort |
The remote port number for this TCP connection. |
-- |
|
14 |
tcpInErrs |
The total number of segments received in error. |
Segments |
|
15 |
tcpOutRsts |
The number of TCP segments sent containing the RST flag. |
Segments |
(7) UDP group
The following table describes the standard MIB objects in the UDP group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
udpInDatagrams |
The total number of UDP datagrams delivered to UDP users. |
Datagrams |
|
2 |
udpNoPorts |
The total number of received UDP datagrams for which there was no application at the destination port. |
Datagrams |
|
3 |
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. |
Datagrams |
|
4 |
udpOutDatagrams |
The total number of UDP datagrams sent from this entity. |
Datagrams |
|
5 |
udpTable |
A table containing UDP listener information. |
-- |
|
5.1 |
udpEntry |
Information about a particular current UDP listener. |
-- |
|
5.1.1 |
udpLocalAddress |
The local IP address for this UDP listener. |
-- |
|
5.1.2 |
udpLocalPort |
The local port number for this UDP listener. |
-- |
(8) SNMP group
The following table describes the standard MIB objects in the SNMP group.
|
ID |
Object name |
Contents |
Units |
|---|---|---|---|
|
1 |
snmpInPkts |
The total number of Messages delivered to the SNMP entity from the transport service. |
Messages |
|
2 |
snmpOutPkts |
The total number of SNMP Messages which were passed from the SNMP protocol entity to the transport service. |
Messages |
|
3 |
snmpInBadVersions |
The total number of SNMP Messages which were delivered to the SNMP protocol entity and were for an unsupported SNMP version. |
Messages |
|
4 |
snmpInBadCommunityNames |
The total number of SNMP Messages delivered to the SNMP protocol entity which used a SNMP community name not known to said entity. |
Messages |
|
5 |
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. |
Messages |
|
6 |
snmpInASNParseErrs |
The total number of ASN.1 or BER errors encountered by the SNMP protocol entity when decoding received SNMP Messages. |
Messages |
|
8 |
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. |
Messages |
|
9 |
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. |
Messages |
|
10 |
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. |
Messages |
|
11 |
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. |
Messages |
|
12 |
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. |
Messages |
|
13 |
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. |
-- |
|
14 |
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. |
-- |
|
15 |
snmpInGetRequests |
The total number of SNMP Get-Request PDUs which have been accepted and processed by the SNMP protocol entity. |
-- |
|
16 |
snmpInGetNexts |
The total number of SNMP Get-Next PDUs which have been accepted and processed by the SNMP protocol entity. |
-- |
|
17 |
snmpInSetRequests |
The total number of SNMP Set-Request PDUs which have been accepted and processed by the SNMP protocol entity. |
-- |
|
18 |
snmpInGetResponses |
The total number of SNMP Get-Response PDUs which have been accepted and processed by the SNMP protocol entity. |
-- |
|
19 |
snmpInTraps |
The total number of SNMP Trap PDUs which have been accepted and processed by the SNMP protocol entity. |
-- |
|
20 |
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. |
Messages |
|
21 |
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. |
-- |
|
22 |
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. |
-- |
|
24 |
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. |
-- |
|
25 |
snmpOutGetRequests |
The total number of SNMP Get-Request PDUs. |
-- |
|
26 |
snmpOutGetNexts |
The total number of SNMP Get-Next PDUs. |
-- |
|
27 |
snmpOutSetRequests |
The total number of SNMP Set-Request PDUs. |
-- |
|
28 |
snmpOutGetResponses |
The total number of SNMP Get-Response PDUs. |
-- |
|
29 |
snmpOutTraps |
The total number of SNMP Trap PDUs. |
-- |
|
30 |
snmpEnableAuthenTraps |
Indicates whether the SNMP Agent process is permitted to generate authentication-failure traps. enabled (1), disabled (2) |
-- |