/stats/l3/ip
IP Statistics
 
IP statistics:
ipInReceives: 3115873 ipInHdrErrors: 1
ipInAddrErrors: 35447 ipForwDatagrams: 0
ipInUnknownProtos: 500504 ipInDiscards: 0
ipInDelivers: 2334166 ipOutRequests: 1010542
ipOutDiscards: 4 ipOutNoRoutes: 4
ipReasmReqds: 0 ipReasmOKs: 0
ipReasmFails: 0 ipFragOKs: 0
ipFragFails: 0 ipFragCreates: 0
ipRoutingDiscards: 0 ipDefaultTTL: 255
ipReasmTimeout: 5
IP statistics are described in the following table:
 
IP Statistics (/stats/l3/ip) 
Statistic
Description
ipInReceives
The 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, and so on.
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 by Alteon. This count includes invalid addresses (for example, 0.0.0.0), 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
The number of input datagrams for which Alteon was not their final IP destination, resulting in an attempt 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 Alteon, and the source- route option succeeded,
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 that would prevent their continued processing, but which were discarded (for example, for lack of buffer space).
Note: This counter does not include any datagrams discarded while awaiting re-assembly.
ipInDelivers
The number of input datagrams successfully delivered to IP user protocols (including ICMP).
ipOutRequests
The number of IP datagrams which local IP user protocols (including ICMP) supplied to IP in requests for transmission.
Note: This counter does not include any datagrams counted in ipForwDatagrams.
ipOutDiscards
The number of output IP datagrams for which no problem was encountered that would prevent their transmission to their destination, but which were discarded (for example, for lack of buffer space).
Note: 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: 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.
ipReasmReqds
The number of IP fragments received which needed to be reassembled in this Alteon.
ipReasmOKs
The number of IP datagrams successfully re-assembled.
ipReasmFails
The number of failures detected by the IP re-assembly algorithm (such as it timed out, there were errors, and so on).
Note: This is not necessarily a count of discarded IP fragments, because 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 in this Alteon.
ipFragFails
The number of IP datagrams that have been discarded because they needed to be fragmented in this Alteon, but could not be. For example, because their Don’t Fragment flag was set.
ipFragCreates
The number of IP datagram fragments that have been generated as a result of fragmentation in this Alteon.
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.
ipDefaultTTL
The default value inserted into the Time-To-Live (TTL) field of the IP header of datagrams originated in this Alteon, whenever a TTL value is not supplied by the transport layer protocol.
ipReasmTimeout
The maximum number of seconds in which received fragments are held while they are awaiting reassembly in this Alteon.