>> MIB - Management Information Base

>> Table: ip - (.1.3.6.1.2.1.4)

ip
OIDNameTypeAccess
.1ForwardingENUMRW
.2DefaultTTLINTEGERRW
.3InReceivesCounterR
.4InHdrErrorsCounterR
.5InAddrErrorsCounterR
.6ForwDatagramsCounterR
.7InUnknownProtosCounterR
.8InDiscardsCounterR
.9InDeliversCounterR
.10OutRequestsCounterR
.11OutDiscardsCounterR
.12OutNoRoutesCounterR
.13ReasmTimeoutINTEGERR
.14ReasmReqdsCounterR
.15ReasmOKsCounterR
.16ReasmFailsCounterR
.17FragOKsCounterR
.18FragFailsCounterR
.19FragCreatesCounterR
.23RoutingDiscardsCounterR

Forwarding
The indication of whether the BRICK is acting as an IP

gateway in respect to the forwarding of datagrams 

received by, but not addressed to, the BRICK. IP gateways

forward datagrams. IP hosts do not (except those source-

routed via the host).

Note that for the BRICK, this object is always set to

'forwarding'.

forwarding(1)		= acting as a gateway;

not-forwarding(2)	= NOT acting as a gateway
Enumerations:
  • forwarding (1)
  • not-forwarding (2)
DefaultTTL
The default value inserted into the Time-To-Live field

of the IP header of datagrams originated at the BRICK,

whenever a TTL value is not supplied by the transport

layer protocol.
InReceives
The total number of input datagrams received from

interfaces, including those received in error.
InHdrErrors
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.
InAddrErrors
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 the BRICK. This

count includes invalid addresses (e.g., 0.0.0.0) and 

addresses of unsupported Classes (e.g., Class E).
ForwDatagrams
The number of input datagrams for which the BRICK

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.
InUnknownProtos
The number of locally-addressed datagrams

received successfully but discarded because of an

unknown or unsupported protocol.
InDiscards
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.
InDelivers
The total number of input datagrams successfully

delivered to IP user-protocols (including ICMP).
OutRequests
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.
OutDiscards
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).
OutNoRoutes
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 which meet this

`no-route' criterion.  Note that this includes any

datagarms which a host cannot route because all of

its default gateways are down.
ReasmTimeout
The maximum number of seconds which received

fragments are held while they are awaiting

reassembly at the BRICK.
ReasmReqds
The number of IP fragments received which needed

to be reassembled at the BRICK.
ReasmOKs
The number of IP datagrams successfully 

re-assembled.
ReasmFails
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.
FragOKs
The number of IP datagrams that have been

successfully fragmented at the BRICK.
FragFails
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.
FragCreates
The number of IP datagram fragments that have

been generated as a result of fragmentation at

the BRICK.
RoutingDiscards
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.


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