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DUPTILE1_Network Interface Object

Updated: March 28, 2003

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

The Network Interface performance object consists of counters that measure the rates at which bytes and packets are sent and received over a TCP/IP connection. It includes counters that monitor connection errors.

The Network Interface counters display data about the network adapters on the server computer. The first instance of the Network Interface object (Instance 1) that you see in System Monitor represents the loopback. The loopback is a local path through the protocol driver and the network adapter. All other instances represent installed network adapters.

 

Counter Name Description Counter Type

Bytes Received/sec

Shows the rate, in incidents per second, at which bytes were received over each network adapter. The counted bytes include framing characters. Bytes Received/sec is a subset of Bytes Total/sec.

PERF_COUNTER_COUNTER

Bytes Sent/sec

Shows the rate, in incidents per second, at which bytes were sent over each network adapter. The counted bytes include framing characters. Bytes Sent/sec is a subset of Bytes Total/sec.

PERF_COUNTER_COUNTER

Bytes Total/sec

Shows the rate, in incidents per second, at which bytes were sent and received on the network interface, including framing characters. Bytes Total/sec is the sum of the values of Bytes Received/sec and Bytes Sent/sec.

PERF_COUNTER_COUNTER

Current Bandwidth

Shows an estimate of the current bandwidth of the network interface in bits per second (bps). For interfaces that do not vary in bandwidth, or for those where no accurate estimation can be made, this value is the nominal bandwidth.

PERF_COUNTER_RAWCOUNT

Output Queue Length

Shows the length, in number of packets, of the output packet queue. If this is longer than two packets, it indicates that there are delays, and if possible the bottleneck should be found and eliminated. Since the requests are queued by Network Driver Interface Specification (NDIS) in this implementation, this value is always 0.

PERF_COUNTER_RAWCOUNT

Packets Outbound Discarded

Shows the number of outbound packets to be discarded, even though no errors were detected to prevent transmission. One possible reason for discarding such a packet could be to free up buffer space.

PERF_COUNTER_RAWCOUNT

Packets Outbound Errors

Shows the number of outbound packets that could not be transmitted because of errors.

PERF_COUNTER_RAWCOUNT

Packets Received Discarded

Shows the number of inbound packets that were discarded, even though no errors were detected to prevent their being delivered to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.

PERF_COUNTER_RAWCOUNT

Packets Received Errors

Shows the number of inbound packets that contained errors that prevented them from being delivered to a higher-layer protocol.

PERF_COUNTER_RAWCOUNT

Packets Received Non-Unicast/sec

Shows the rate, in incidents per second, at which non-unicast (subnet broadcast or subnet multicast) packets were delivered to a higher-layer protocol.

PERF_COUNTER_COUNTER

Packets Received Unicast/sec

Shows the rate, in incidents per second, at which subnet-unicast packets were delivered to a higher-layer protocol.

PERF_COUNTER_COUNTER

Packets Received Unknown

Shows the number of packets received through the interface that were discarded because of an unknown or unsupported protocol.

PERF_COUNTER_RAWCOUNT

Packets Received/sec

Shows the rate, in incidents per second, at which packets were received on the network interface.

PERF_COUNTER_COUNTER

Packets Sent/sec

Shows the rate, in incidents per second, at which packets were sent on the network interface.

PERF_COUNTER_COUNTER

Packets Sent Non-Unicast/sec

Shows the rate, in incidents per second, at which packets were requested to be transmitted to non-unicast (subnet broadcast or subnet multicast) addresses by higher-level protocols. This counter includes packets that were discarded or not sent.

PERF_COUNTER_COUNTER

Packets Sent Unicast/sec

Shows the rate, in incidents per second, at which packets were requested to be transmitted to subnet-unicast addresses by higher-level protocols. This counter includes the packets that were discarded or not sent.

PERF_COUNTER_COUNTER

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