The TCPIP page shows recent TCP/IP activity to and from the current system.
TCP/IP (Transmission Control Protocol/Internet Protocol) is one means by which computers communicate across a network. It is the basic protocol used for communication across the Internet.
Communication programs that use the TCP/IP protocol are built in two layers:
To open the TCPIP page
Click Network | TCPIP.
Charts on the TCPIP page
Notes:
Chart | Description | ||||||||||||||||||||||||
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TCP Segments |
When TCP transfers a stream data, it breaks up the stream into small segments. The TCP Segments chart displays three different graphs representing the rate at which TCP segments are transmitted or received in the current Windows system.
Sent, Received and Retransmitted are each represented by a single line on the chart, and by an item in the legend at the right of the chart. | ||||||||||||||||||||||||
IP Fragments |
When data packets are transmitted across a network via TCP/IP, they may be further fragmented en route, and need to be reassembled. The IP Fragments chart displays the rates at which the fragmented packets are received and rebuilt. The graphs on the chart display one of the following features of IP fragmentation:
Each data series in the IP Fragments chart is represented by a single line, and by an item in the legend at the right of the chart. | ||||||||||||||||||||||||
UDP Datagrams |
UDP (User Datagram Protocol) is an alternative communications protocol to the Transmission Control Protocol (TCP). Unlike TCP, UDP does not provide a sequencing service, so when UDP datagrams (packets) arrive at a destination, they are reassembled into a complete message via an end-point application that is active on the port(s) specified in the datagram. The UDP Datagrams chart displays three different graphs representing the rate at which UDP datagrams are transmitted or received in the current Windows system.
Sent, Received and No Port are each represented by a single line on the chart, and by an item in the legend at the right of the chart. | ||||||||||||||||||||||||
IP Datagrams / IP Datagram Errors |
IP datagrams (packets) are the message units that are transmitted across a network (and across the Internet) via the Internet Protocol. Use the IP Datagrams control to choose to view IP Datagrams or IP Datagram Errors. The IP Datagrams chart: The rate at which IP packets are sent, received, and routed to other destinations.
The IP Datagram Errors chart: The number of errors that occur when IP packets are sent, received, and routed to other destinations.
Notes:
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The NBT page shows the machines that have a connection to the diagnosed system, and the corresponding level of traffic (in kilobytes per second) being generated between the connections.
Note: This is only for NBT (NetBios over TCP/IP) connections – that is, only Microsoft Networking connection over TCPIP.
To open the NBT page
Click Network | NBT.
The SPX page shows recent SPX activity to and from the current system.
SPX (Sequenced Packet Exchange) is a communication protocol used in Novell Netware networks. It is similar to TCP, and provides connection services between nodes on a network. The combination of SPX with IPX (Internetwork Packet Exchange) provides connection services similar to TCP/IP.
To open the SPX page
Click Network | SPX.
Charts on the SPX page
Notes:
Chart | Description |
---|---|
Bytes In/Out |
The rate at which bytes are handled by the IPX/SPX protocol.
|
Frames In/Out |
The rate at which SPX frames (equivalent to IP datagrams) are handled by the IPX/SPX protocol.
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Errors (static) |
This chart shows all of the SPX static errors counted since the machine was last restarted. The graphs on the chart are:
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Errors (dynamic) |
This chart shows the rate at which SPX dynamic errors occur. The graphs on the chart are:
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The sessions displayed in this page are the active connections made to the current Windows system by users on other systems.
To open the SPX page
Click Network | Sessions.
The Sessions grid on this page displays data for each connection in the following columns:
Column | Description |
---|---|
Computer |
The name of the remote machine connected to the current system. |
Elapsed time |
How long the connection has been maintained. |
Idle time |
The part of Elapsed time when the connection has been inactive. |
Domain |
The domain of the user session currently logged in to the remote machine. Domain information is displayed only for Terminal Services and Remote Desktop sessions. |
User |
The user currently logged in to the remote machine. |
Type |
The type of user session, for example "Terminal Services" or "Remote Desktop". For normal sessions, the Type column is blank. Remote Desktop sessions are shown only for Windows Server machines (for example, Windows 2000 Advanced Server or Windows Server 2003). |
State |
The current state of the session. Some examples are "active", "disconnected", and "connecting". |
Logon Time |
The time that the user last logged in to the remote desktop session. This column shows data only when the session type is Remote Desktop. |
Disconnected Time |
The time that the user last disconnected from the remote desktop session. This column shows data only when the session type is Remote Desktop and the state is Disconnected. If the user logs out of the remote desktop session, the session is closed. |
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