8.4.áEndpoints

Statistics of the endpoints captured.

[Tip]Tip!

If you are looking for a feature other network tools call a hostlist, here is the right place to look. The list of Ethernet or IP endpoints is usually what you're looking for.

8.4.1.áWhat is an Endpoint?

A network endpoint is the logical endpoint of separate protocol traffic of a specific protocol layer. The endpoint statistics of Wireshark will take the following endpoints into account:

  • Ethernet an Ethernet endpoint is identical to the Ethernet's MAC address.

  • Fibre Channel XXX - insert info here.

  • FDDI a FDDI endpoint is identical to the FDDI MAC address.

  • IPv4 an IP endpoint is identical to its IP address.

  • IPX XXX - insert info here.

  • TCP a TCP endpoint is a combination of the IP address and the TCP port used, so different TCP ports on the same IP address are different TCP endpoints.

  • Token Ring a Token Ring endpoint is identical to the Token Ring MAC address.

  • UDP a UDP endpoint is a combination of the IP address and the UDP port used, so different UDP ports on the same IP address are different UDP endpoints.

[Note]Broadcast / multicast endpoints

Broadcast / multicast traffic will be shown separately as additional endpoints. Of course, as these endpoints are virtual endpoints, the real traffic will be received by all (multicast: some) of the listed unicast endpoints.

8.4.2.áThe "Endpoints" window

This window shows statistics about the endpoints captured.

Figureá8.3.áThe "Endpoints" window

The "Endpoints" window

For each supported protocol, a tab is shown in this window. The tab labels shows the number of endpoints captured (e.g. the tab label "Ethernet: 5" tells you that five ethernet endpoints have been captured). If no endpoints of a specific protocol were captured, the tab label will be grayed out (although the related page can still be selected).

Each row in the list shows the statistical values for exactly one endpoint.

Name resolution will be done if selected in the window and if it is active for the specific protocol layer (MAC layer for the selected Ethernet endpoints page). As you might have noticed, the first row has a name resolution of the first three bytes "Netgear", the second row's address was resolved to an IP address (using ARP) and the third was resolved to a broadcast (unresolved this would still be: ff:ff:ff:ff:ff:ff), the last two Ethernet addresses remain unresolved.

[Tip]Tip!

This window will be updated frequently, so it will be useful, even if you open it before (or while) you are doing a live capture.

8.4.3.áThe protocol specific "Endpoint List" windows

Before the combined window described above was available, each of its pages were shown as separate windows. Even though the combined window is much more convenient to use, these separate windows are still available. The main reason is, they might process faster for very large capture files. However, as the functionality is exactly the same as in the combined window, they won't be discussed in detail here.