SCALAR OBJECTS

Name	Type	Access	OID	Description
1 ifNumber	INTEGER32	ReadOnly	.1.3.6.1.2.1.2.1	The number of network interfaces (regardless of their current state) present on this system.

TABLE OBJECTS

Table ifTable

Table Name	ifTable
In MIB	IF-MIB
Registered at OID	.1.3.6.1.2.1.2.2
Table Description	A list of interface entries. The number of entries is given by the value of ifNumber.
Row Description	An entry containing management information applicable to a particular interface.

ifTable Indexes:

Name	Type	Access	Description
1 ifIndex	INTEGER32 Legal values: 1 .. 2147483647 InterfaceIndex	ReadOnly	Note: this object is based on the InterfaceIndex TEXTUAL-CONVENTION. A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.

Other ifTable Columns:

Name	Type	Access	Description
2 ifDescr	OCTETSTR Legal Lengths: 0 .. 255 DisplayString	ReadOnly	Note: this object is based on the DisplayString TEXTUAL-CONVENTION. 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 interface hardware/software.
3 ifType	INTEGER IANAifType (ENUM list below)	ReadOnly	Note: this object is based on the IANAifType TEXTUAL-CONVENTION. 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.
4 ifMtu	INTEGER32	ReadOnly	The size of the largest packet 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.
5 ifSpeed	GAUGE	ReadOnly	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. If the bandwidth of the interface is greater than the maximum value reportable by this object then this object should report its maximum value (4,294,967,295) and ifHighSpeed must be used to report the interace's speed. For a sub-layer which has no concept of bandwidth, this object should be zero.
6 ifPhysAddress	OCTETSTR PhysAddress	ReadOnly	Note: this object is based on the PhysAddress TEXTUAL-CONVENTION. The interface's address at its protocol sub-layer. For example, for an 802.x interface, this object normally contains a MAC address. The interface's media-specific MIB must define the bit and byte ordering and the format of the value of this object. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length.
7 ifAdminStatus	INTEGER Value Label/Meaning 1 up 2 down 3 testing	ReadWrite	The desired state of the interface. The testing(3) state indicates that no operational packets can be passed. When a managed system initializes, all interfaces start with ifAdminStatus in the down(2) state. As a result of either explicit management action or per configuration information retained by the managed system, ifAdminStatus is then changed to either the up(1) or testing(3) states (or remains in the down(2) state).
8 ifOperStatus	INTEGER Value Label/Meaning 1 up 2 down 3 testing 4 unknown 5 dormant 6 notPresent 7 lowerLayerDown	ReadOnly	The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed. If ifAdminStatus is down(2) then ifOperStatus should be down(2). If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic; it should change to dormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection); it should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state; it should remain in the notPresent(6) state if the interface has missing (typically, hardware) components.
9 ifLastChange	TICKS	ReadOnly	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.
10 ifInOctets	COUNTER	ReadOnly	The total number of octets received on the interface, including framing characters. 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.
11 ifInUcastPkts	COUNTER	ReadOnly	The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were not addressed to a multicast or 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.
12 ifInNUcastPkts	DEPRECATED COUNTER	ReadOnly	The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were addressed to a multicast or 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. This object is deprecated in favour of ifInMulticastPkts and ifInBroadcastPkts.
13 ifInDiscards	COUNTER	ReadOnly	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. 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.
14 ifInErrors	COUNTER	ReadOnly	For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character- oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. 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.
15 ifInUnknownProtos	COUNTER	ReadOnly	For packet-oriented interfaces, the number of packets received via the interface which were discarded because of an unknown or unsupported protocol. For character-oriented or fixed-length interfaces that support protocol multiplexing the number of transmission units received via the interface which were discarded because of an unknown or unsupported protocol. For any interface that does not support protocol multiplexing, this counter will always be 0. 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.
16 ifOutOctets	COUNTER	ReadOnly	The total number of octets transmitted out of the interface, including framing characters. 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.
17 ifOutUcastPkts	COUNTER	ReadOnly	The total number of packets that higher-level protocols requested be transmitted, and which were not addressed to a multicast or 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.
18 ifOutNUcastPkts	DEPRECATED COUNTER	ReadOnly	The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast or 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. This object is deprecated in favour of ifOutMulticastPkts and ifOutBroadcastPkts.
19 ifOutDiscards	COUNTER	ReadOnly	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. 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.
20 ifOutErrors	COUNTER	ReadOnly	For packet-oriented interfaces, the number of outbound packets that could not be transmitted because of errors. For character-oriented or fixed-length interfaces, the number of outbound transmission units that could not be transmitted because of errors. 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.
21 ifOutQLen	DEPRECATED GAUGE	ReadOnly	The length of the output packet queue (in packets).
22 ifSpecific	DEPRECATED OBJECTID	ReadOnly	A reference to MIB definitions specific to the particular media being used to realize the interface. It is recommended that this value point to an instance of a MIB object in the media-specific MIB, i.e., that this object have the semantics associated with the InstancePointer textual convention defined in RFC 2579. In fact, it is recommended that the media-specific MIB specify what value ifSpecific should/can take for values of ifType. If no MIB definitions specific to the particular media are available, the value should be set to the OBJECT IDENTIFIER { 0 0 }.

DEPRECATED OR OBSOLETE OR HISTORIC OBJECTS

NOTIFICATIONS

TEXTUAL CONVENTIONS

These TEXTUAL-CONVENTIONS are used in other parts of the document above. They are SNMP's way of defining a datatype that is used repeatedly by other MIB objects. Any implementation implementing objects that use one of these definitions must follow its DESCRIPTION clause as well as the DESCRIPTION clause of the object itself.

Name	Type	Description
InterfaceIndex	INTEGER32	A unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization.
DisplayString	OCTETSTR	Represents textual information taken from the NVT ASCII character set, as defined in pages 4, 10-11 of RFC 854. To summarize RFC 854, the NVT ASCII repertoire specifies: - the use of character codes 0-127 (decimal) - the graphics characters (32-126) are interpreted as US ASCII - NUL, LF, CR, BEL, BS, HT, VT and FF have the special meanings specified in RFC 854 - the other 25 codes have no standard interpretation - the sequence 'CR LF' means newline - the sequence 'CR NUL' means carriage-return - an 'LF' not preceded by a 'CR' means moving to the same column on the next line. - the sequence 'CR x' for any x other than LF or NUL is illegal. (Note that this also means that a string may end with either 'CR LF' or 'CR NUL', but not with CR.) Any object defined using this syntax may not exceed 255 characters in length.
IANAifType	INTEGER Value Label/Meaning 1 other 2 regular1822 3 hdh1822 4 ddnX25 5 rfc877x25 6 ethernetCsmacd 7 iso88023Csmacd 8 iso88024TokenBus 9 iso88025TokenRing 10 iso88026Man 11 starLan 12 proteon10Mbit 13 proteon80Mbit 14 hyperchannel 15 fddi 16 lapb 17 sdlc 18 ds1 19 e1 20 basicISDN 21 primaryISDN 22 propPointToPointSerial 23 ppp 24 softwareLoopback 25 eon 26 ethernet3Mbit 27 nsip 28 slip 29 ultra 30 ds3 31 sip 32 frameRelay 33 rs232 34 para 35 arcnet 36 arcnetPlus 37 atm 38 miox25 39 sonet 40 x25ple 41 iso88022llc 42 localTalk 43 smdsDxi 44 frameRelayService 45 v35 46 hssi 47 hippi 48 modem 49 aal5 50 sonetPath 51 sonetVT 52 smdsIcip 53 propVirtual 54 propMultiplexor 55 ieee80212 56 fibreChannel 57 hippiInterface 58 frameRelayInterconnect 59 aflane8023 60 aflane8025 61 cctEmul 62 fastEther 63 isdn 64 v11 65 v36 66 g703at64k 67 g703at2mb 68 qllc 69 fastEtherFX 70 channel 71 ieee80211 72 ibm370parChan 73 escon 74 dlsw 75 isdns 76 isdnu 77 lapd 78 ipSwitch 79 rsrb 80 atmLogical 81 ds0 82 ds0Bundle 83 bsc 84 async 85 cnr 86 iso88025Dtr 87 eplrs 88 arap 89 propCnls 90 hostPad 91 termPad 92 frameRelayMPI 93 x213 94 adsl 95 radsl 96 sdsl 97 vdsl 98 iso88025CRFPInt 99 myrinet 100 voiceEM 101 voiceFXO 102 voiceFXS 103 voiceEncap 104 voiceOverIp 105 atmDxi 106 atmFuni 107 atmIma 108 pppMultilinkBundle 109 ipOverCdlc 110 ipOverClaw 111 stackToStack 112 virtualIpAddress 113 mpc 114 ipOverAtm 115 iso88025Fiber 116 tdlc 117 gigabitEthernet 118 hdlc 119 lapf 120 v37 121 x25mlp 122 x25huntGroup 123 transpHdlc 124 interleave 125 fast 126 ip 127 docsCableMaclayer 128 docsCableDownstream 129 docsCableUpstream 130 a12MppSwitch 131 tunnel 132 coffee 133 ces 134 atmSubInterface 135 l2vlan 136 l3ipvlan 137 l3ipxvlan 138 digitalPowerline 139 mediaMailOverIp 140 dtm 141 dcn 142 ipForward 143 msdsl 144 ieee1394 145 if-gsn 146 dvbRccMacLayer 147 dvbRccDownstream 148 dvbRccUpstream 149 atmVirtual 150 mplsTunnel 151 srp 152 voiceOverAtm 153 voiceOverFrameRelay 154 idsl 155 compositeLink 156 ss7SigLink 157 propWirelessP2P 158 frForward 159 rfc1483 160 usb 161 ieee8023adLag 162 bgppolicyaccounting 163 frf16MfrBundle 164 h323Gatekeeper 165 h323Proxy 166 mpls 167 mfSigLink 168 hdsl2 169 shdsl 170 ds1FDL 171 pos 172 dvbAsiIn 173 dvbAsiOut 174 plc 175 nfas 176 tr008 177 gr303RDT 178 gr303IDT 179 isup 180 propDocsWirelessMaclayer 181 propDocsWirelessDownstream 182 propDocsWirelessUpstream 183 hiperlan2 184 propBWAp2Mp 185 sonetOverheadChannel 186 digitalWrapperOverheadChannel 187 aal2 188 radioMAC 189 atmRadio 190 imt 191 mvl 192 reachDSL 193 frDlciEndPt 194 atmVciEndPt 195 opticalChannel 196 opticalTransport 197 propAtm 198 voiceOverCable 199 infiniband 200 teLink 201 q2931 202 virtualTg 203 sipTg 204 sipSig 205 docsCableUpstreamChannel 206 econet 207 pon155 208 pon622 209 bridge 210 linegroup 211 voiceEMFGD 212 voiceFGDEANA 213 voiceDID 214 mpegTransport 215 sixToFour 216 gtp 217 pdnEtherLoop1 218 pdnEtherLoop2 219 opticalChannelGroup 220 homepna 221 gfp 222 ciscoISLvlan 223 actelisMetaLOOP 224 fcipLink 225 rpr 226 qam 227 lmp 228 cblVectaStar 229 docsCableMCmtsDownstream 230 adsl2 231 macSecControlledIF 232 macSecUncontrolledIF 233 aviciOpticalEther 234 atmbond 235 voiceFGDOS 236 mocaVersion1 237 ieee80216WMAN 238 adsl2plus 239 dvbRcsMacLayer 240 dvbTdm 241 dvbRcsTdma 242 x86Laps 243 wwanPP 244 wwanPP2 245 voiceEBS 246 ifPwType 247 ilan 248 pip 249 aluELP 250 gpon 251 vdsl2 252 capwapDot11Profile 253 capwapDot11Bss 254 capwapWtpVirtualRadio 255 bits 256 docsCableUpstreamRfPort 257 cableDownstreamRfPort 258 vmwareVirtualNic 259 ieee802154 260 otnOdu 261 otnOtu 262 ifVfiType 263 g9981 264 g9982 265 g9983 266 aluEpon 267 aluEponOnu 268 aluEponPhysicalUni 269 aluEponLogicalLink 270 aluGponOnu 271 aluGponPhysicalUni 272 vmwareNicTeam	This data type is used as the syntax of the ifType object in the (updated) definition of MIB-II's ifTable. The definition of this textual convention with the addition of newly assigned values is published periodically by the IANA, in either the Assigned Numbers RFC, or some derivative of it specific to Internet Network Management number assignments. (The latest arrangements can be obtained by contacting the IANA.) Requests for new values should be made to IANA via email (iana&iana.org). The relationship between the assignment of ifType values and of OIDs to particular media-specific MIBs is solely the purview of IANA and is subject to change without notice. Quite often, a media-specific MIB's OID-subtree assignment within MIB-II's 'transmission' subtree will be the same as its ifType value. However, in some circumstances this will not be the case, and implementors must not pre-assume any specific relationship between ifType values and transmission subtree OIDs.
PhysAddress	OCTETSTR	Represents media- or physical-level addresses.

TREE VIEW

Tree view generated by running: snmptranslate -Tp IF-MIB::interfaces