ip Object
The following table describes the standard SNMP Get support for the IP group. Implementation of the IP group is mandatory for all systems. The IP address table contains this entity's IP addressing information
| MIB Object | Object ID: 1.3.6.1.2.1.4 + | Description |
|---|---|---|
| ipForwarding | .1 | Indicates 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 | .2 | Default value inserted into the Time-To-Live (TTL) field of the IP header of datagrams originated at this entity, whenever a TTL value is not supplied by the transport layer protocol. |
| ipInReceives | .3 | Total number of input datagrams received from interfaces, including those received in error. |
| ipInHdrErrors | .4 | 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, and so on. |
| ipInAddrErrors | .5 | 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 (for example, ...) and addresses of unsupported Classes (for example, 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 | .6 | 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 includes only those packets which were Source-Routed via this entity, and the Source-Route option processing was successful. |
| ipInUnknownProtos | .7 | Number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol. |
| ipInDiscards | .8 | 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 | .9 | Total number of input datagrams successfully delivered to IP user-protocols including ICMP. |
| ipOutRequests | .10 | 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 | .11 | 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 inipForwDatagrams if any such packets met this (discretionary) discard criterion.) |
| ipOutNoRoutes | .12 | Number of IP datagrams discarded because a route could not be found to transmit them to their destination. Note that this counter includes any packets counted in ipForwDatagrams which meet this "no-route" criterion. (This includes any datagrams which a host cannot route because all of its default gateways are down.) |
| ipReasmTimeout | .13 | Maximum number of seconds which received fragments are held while they are awaiting reassembly at this entity. |
| ipReasmReqds | .14 | Number of IP fragments received which needed to be reassembled at this entity. |
| ipReasmOKs | .15 | Number of IP datagrams successfully re-assembled. |
| ipReasmFails | .16 | 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 | .17 | Number of IP datagrams that have been successfully fragmented at this entity. |
| ipFragFails | .18 | Number of IP datagrams that have been discarded because they needed to be fragmented at this entity but could not be (for example, because their Don't Fragment flag was set). |
| ipFragCreates | .19 | Number of IP datagram fragments that have been generated as a result of fragmentation at this entity. |
| ipAddrTable | .20 | The table of addressing information relevant to this entity's IPv4 addresses. |
ipAddrTable Table
The table of addressing information relevant to this entity's IPv4 addresses.
| MIB Object | Object ID: 1.3.6.1.2.1.4.20.1 + | Description |
|---|---|---|
| ipAdEntAddr | .1 | IP address to which this entry's addressing information pertains. |
| ipAdEntIfIndex | .2 | 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 | .3 | 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 host bits set to . |
| ipAdEntBcastAddr | .4 | 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 is 1. This value applies to both the subnet and network broadcasts addresses used by the entity on this (logical) interface. |
| ipAdEntReasmMaxSize | .5 | Size of the largest IP datagram which this entity can re-assemble from incoming IP fragmented datagrams received on this interface. |