User`s guide

Viewing Chassis Information 2-13
Using the STS16-20 Chassis View
The following descriptive information is provided for each interface:
Index
The index value assigned to each interface on the device.
Type
The type of the interface, distinguished by the physical/link protocol(s) running
immediately below the network layer: Token Ring for the built-ports; other
values, such as ATM, will display for the installed SSIMs.
Description
A text description of the interface: the device type (e.g. STS-16-20RM) will display
for the 20 built-in Token Ring ports; the SSIM type (e.g. SSIM-A8-01) will display
for any installed SSIMs; and other values will display for any internal interfaces.
Physical Status
The current physical statusÑor operational stateÑof the interface: Online or
Ofßine.
Logical Status
The current logical statusÑor administrative stateÑof the interface: Up or Down.
Displaying Interface Performance Statistics and Bar Graphs
The statistical values (and, where available, the accompanying bar graphs)
provide a quick summary of interface performance. You can select the type of
statistical value and the unit to be displayed by using the two drop-down lists
directly above the I/F Display section, as follows:
1. From the right-most drop-down list of the I/F Summary window, click on the
unit in which you wish to display the selected statistic: Load, Raw Counts, or
Rate.
2. Once you have selected the base unit, click on the left-most drop-down list to
specify the display statistic. Note that the options available from this menu will
vary depending on the base unit you have selected.
After you select a new display mode, the statistics (and bar graphs, where
applicable) will refresh to reßect the current mode, as described below.
NOTE
Bar graphs are only available when Load is the selected base unit; if you select Raw
Counts or Rate, the Bar Graph column will be removed from the interface display.