This topic details the Network Device metrics.

Table 1. Supported Metrics

Metric Name

Definition

Availability

N/A

Engine Uptime

N/A

Uptime

N/A

Bytes Received Bytes

Received per Minute

N/A

Bytes Received

Bytes Received per Minute

N/A

IP Forwards

IP Forwards per Second

The 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 routers, this counter will include only those packets which were Source-Routed via this entity, and the Source-Route option processing was successful."

IP Fragmented Creates

IP Fragmented Creates per Second

The number of IP datagram fragments that have been generated as a result of fragmentation at this entity."

IP Fragmented Failures

IP Fragmented Failures per Second

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."

IP Fragmented OK

IP Fragmented OK per Second

The number of IP datagrams that have been successfully fragmented at this entity.

IP In Address Errors

IP In Address Errors per Second

"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. This count includes invalid addresses (e.g., 0.0.0.0) and addresses of unsupported Classes (e.g., Class E). For entities which are not IP routers and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.

IP In Delivers

IP In Delivers per Second

The total number of input datagrams successfully delivered to IP user-protocols (including ICMP)

IP In Discards

IP In Discards per Second

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."

IP In Header Errors

IP In Header Errors per Second

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.

IP In Receives

IP In Receives per Second

The total number of input datagrams received from interfaces, including those received in error.

IP In Unknown Protocol

IP In Unknown Protocol per Second

The number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol.

IP Out Discards

IP Out Discards per Second

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). Note that this counter would include datagrams counted in ipForwDatagrams if any such packets met this (discretionary) discard criterion.

IP Out No Routes

IP Out No Routes per Second

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 datagrams which a host cannot route because all of its default routers are down.

IP Out Requests

IP Out Requests per Second

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.

IP Reassembles Failed

IP Reassembles Failed per Second

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.

IP Reassembles OK

IP Reassembles OK per Second

The number of IP datagrams successfully re-assembled.

IP Reassembles Required

IP Reassembles Required per Second

The number of IP fragments received which needed to be reassembled at this entity.

Number of Processes

N/A

Number of Users

N/A