Network Monitor Statistics provides information about various kinds of packet/connection statistics information network protocols such as Transmission Control Protocol (TCP), User Datagram Protocol (UDP), Internet Protocol (IP) and the Internet Control Message Protocol (ICMP) that are used on the local computer. The provided information is useful for the network administration of the local computer.

Network Monitor Statistics contains the following tables: IP Statistics, UDP Statistics, TCP Statistics and ICMP Statistics. IP Statistics Table contains information about the IP protocol running on a particular computer.

The results are shown as a table with the following columns: Parameter and Value. Parameter column describes the next information about the IP Protocol.

Forwarding

Specifies whether IP forwarding is enabled or disabled.

DefaultTTL

Specifies the default initial time to live (TTL) for datagrams originating on a particular computer.

Datagrams Received

Shows the number of datagrams received.

Header Errors (In)

Shows the number of datagrams received that have header errors. Datagrams Received Header Errors is 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.

Address Errors (In)

Specifies the number of datagrams received that have address errors. These datagrams are 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, 0.0.0.0) and addresses of unsupported Classes (for example, Class E).

Datagrams Forwarded

Specifies the number of datagrams forwarded.

Unknown Protocols (In)

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

Datagrams Discarded (In)

Specifies the number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded (for example, for lack of buffer space). This counter does not include any datagrams discarded while awaiting reassembly.

Datagrams Delivered

Specifies the number of received datagrams delivered.

Requests Out

Specifies the number of outgoing datagrams that IP is requested to transmit. This number does not include forwarded datagrams.

Routing Discarded

Specifies the number of outgoing datagrams discarded.

Datagrams Discarded (Out)

Specifies the number of transmitted datagrams discarded. These are datagrams for which no problems were encountered to prevent their transmission to their destination, but which were discarded (for example, for lack of buffer space.) This counter would include datagrams counted in Datagrams Forwarded if any such packets met this (discretionary) discard criterion.

No Routes (Out)

Specifies the number of datagrams for which no route could be found to transmit them to the destination IP address. These datagrams were discarded. This counter includes any packets counted in Datagrams Forwarded that meet this "no route" criterion.

Reassemble Timeouts

Specifies the amount of time allowed for all pieces of a fragmented datagram to arrive. If all pieces do not arrive within this time, the datagram is discarded.

Reassemble Requests

Specifies the number of datagrams that require reassembly.

Successful Reassemblies

Specifies the number of datagrams that were successfully reassembled.

Failed Reassemblies

Specifies the number of datagrams that cannot be reassembled.

Successful Fragmentation

Specifies the number of datagrams that were fragmented successfully.

Failed Fragmentation

Specifies the number of datagrams that need to be fragmented but couldn't be because the IP header specifies no fragmentation, for example, because their "Don't Fragment" flag was set. These datagrams are discarded.

Datagrams Fragmented

Specifies the number of fragments created.

Number of Interfaces

Specifies the number of interfaces.

Number of IP Addresses

Specifies the number of IP addresses associated with this computer.

Routes in Routing Table

Specifies the number of routes in the IP routing table.

UDP StatisticsTable shows the User Datagram Protocol (UDP) statistics for the local computer. The results are shown as a table with the following columns: Parameter and Value. Parameter column describes the next information about the UDP Protocol.

Datagrams (In)

Specifies the number of datagrams received.

Datagrams (Out)

Specifies the number of datagrams transmitted.

No Ports

Specifies the number of received datagrams that were discarded because the specified port was invalid.

Errors (In)

Specifies the number of erroneous datagrams that were received. Datagrams Received Errors is the number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port.

UDP Listen Ports

Specifies the number of entries in the UDP listener table.

TCP StatisticsTable shows the Transmission Control Protocol (TCP) statistics for the local computer. The results are shown as a table with the following columns: Parameter and Value. Parameter column describes the next information about the TCP Protocol.

Retransmission Algorithm

Specifies the retransmission time-out (RTO) algorithm in use. Retransmission Algorithm can have one of the following values.

  
Minimum timeout (ms)

Specifies the minimum retransmission time-out value in milliseconds.

Maximum timeout (ms)

Specifies the maximum retransmission time-out value in milliseconds.

Maximum Pend. Connections

Specifies the maximum number of connections. If it is -1, the maximum number of connections is dynamic.

Active Opens

Specifies the number of active opens. In an active open, the client is initiating a connection with the server.

Passive Opens

Specifies the number of passive opens. In a passive open, the server is listening for a connection request from a client.

Failed Open Attempts

Specifies the number of failed connection attempts.

Established connections Reset

Specifies the number of established connections that have been reset.

Current Established Connection

Specifies the number of currently established connections.

Segments received

Specifies the number of segments received.

Segments sent

Specifies the number of segments transmitted. This number does not include retransmitted segments.

Segments Retransmitted

Specifies the number of segments retransmitted.

Incoming Errors

Specifies the number of errors received.

Outgoing Resets

Specifies the number of segments transmitted with the reset flag set.

Cumulative Connections

Specifies the cumulative number of connections.

ICMP StatisticsTable shows the statistics for both incoming (IN) and outgoing (OUT) Internet Control Message Protocol (ICMP) messages on a particular computer. The results are shown as a table with the following columns: Parameter, IN and OUT. Parameter column describes the next information about the ICMP Protocol.

Mesages received

Specifies the number of messages received or sent.

Errors

Specifies the number of errors received or sent.

Destination Unreachable

Specifies the number of destination-unreachable messages received or sent. A destination-unreachable message is sent to the originating computer when a datagram fails to reach its intended destination.

Time Exceeded

Specifies the number of time-to-live (TTL) exceeded messages received or sent. A time-to-live exceeded message is sent to the originating computer when a datagram is discarded because the number of routers it has passed through exceeds its time-to-live value.

Parameter Problems

Specifies the number of parameter-problem messages received or sent. A parameter-problem message is sent to the originating computer when a router or host detects an error in a datagram's IP header.

Source Quench

Specifies the number of source quench messages received or sent. A source quench request is sent to a computer to request that it reduces its rate of packet transmission.

Redirects

Specifies the number of redirect messages received or sent. A redirect message is sent to the originating computer when a better route is discovered for a datagram sent by that computer.

Echo Requests

Specifies the number of echo requests received or sent. An echo request causes the receiving computer to send an echo reply message back to the originating computer.

Echo Replies

Specifies the number of echo replies received or sent. A computer sends an echo reply in response to receiving an echo request message.

Timestamp requests

Specifies the number of time-stamp requests received or sent. A time-stamp request causes the receiving computer to send a time-stamp reply back to the originating computer.

Timestamp replies

Specifies the number of time-stamp replies received or sent. A computer sends a time-stamp reply in response to receiving a time-stamp request. Routers can use time-stamp requests and replies to measure the transmission speed of datagrams on a network.

Address Mask Requests

Specifies the number of address mask requests received or sent. A computer sends an address mask request to determine the number of bits in the subnet mask for its local subnet.

Address Mask Replies

Specifies the number of address mask responses received or sent. A computer sends an address mask response in response to an address mask request.

Connections | Statistics | IP-Address | IP-Routing | Adapters/Interface | ARP