Link Graphs

With the Link Graphs page, you can:

Generating Graphs of Link Information

To generate a graph for the link:

  1. From the Link Graphs page, click Graph.
  2. From the drop-down list in the upper right corner, select a graph type: % Utilization, Total Bytes, Total Packets, or Total Errors.
    The graph displays data for only one end of the link.
    For more information, see the graph descriptions table.

Adjusting the Polling Interval

To adjust the polling interval for a graph:

  1. Click User Settings in any view.
  2. From the Link and Device Graph Polling Interval drop-down list, select a polling interval.
    The default interval is 24 seconds. A longer interval reduces the amount of network traffic, but the graphs might display outdated information. A shorter polling interval has the opposite effect.
  3. Click OK in the User Settings window.
  4. Close the graph window.
  5. In Netscape, click Reload (click Refresh in Internet Explorer) to redisplay the page.
  6. Reopen the graph window.

Graph Descriptions

Graph Description
% Utilization Displays the percentage of bandwidth being used on the port corresponding to the link. For example, if the bandwidth of the link is 100 Mbps, and 20 Mb is consumed at a time, the graph plots 20% at that instant.
Total Bytes (transmitted and received) Displays three graphs: Total Bytes (blue), Total Received (red), and Total Transmitted (black).
The Total Bytes graph displays the total number of bytes received on and transmitted to the port corresponding to the link.
The Total Bytes Received graph displays the total number of bytes received on the port corresponding to the link.
The Total Bytes Transmitted graph displays the number of bytes transmitted on the port corresponding to the link.
Total Packets (transmitted and received) Displays two graphs: Total Packets (blue) and Total Broadcast/Multicast Packets (red).
The Total Packets graph displays the total number of packets (including broadcast, multicast, and unicast) received on and transmitted to the port corresponding to the link.
The Total Broadcast/Multicast Packets graph displays the total number of broadcast and multicast packets received on and transmitted to the port corresponding to the link.
Total Errors Displays two graphs: Total Errors (blue) and Total Packets Dropped (red).
The Total Errors graph displays the total number of packets that contain errors received on the port corresponding to the link.
The Total Packets Dropped graph displays the total number of packets that were dropped on the port corresponding to the link because of a lack of buffers or bandwidth or because of user-configured packet filtering on the switch.