Cabletron Systems CSX200 Bridge Performance Graph Window Fields, Frames Forwarded Green, 4-17

Bridging

Figure 4-2. Bridge Performance Graph

Bridge Performance Graph Window Fields

You can select the following statistics to display in the Bridge Performance Graph or Bridge Port Performance Graph. Statistics are provided numerically (as an average or peak value) and graphically. The device is polled for the graphed information every 2 seconds, and numeric values are updated based on this poll.

The graph updates at the Þxed two second interval. For the Þrst 60 seconds of graphing, you will note the graph lines extending as each intervalÕs data is added to the graph. Once the Þrst 60 seconds has passed, the newest data is added at the right edge of the graph, and the oldest data is scrolled off to the left.

Peak statistics are based on the peak level of activity returned from a single poll since the Performance Graph window was invoked. A date and time is provided for peak levels.

The Average statistics are updated every two seconds as averaged over the previous four poll intervals (i.e., averaged over a sliding eight second time window).

Frames Forwarded (Green)

ForwardedThe number of frames forwarded by the deviceÕs bridge, at the device or port level.

Nothing	The Frames Forwarded function is currently not
	measuring any statistics.
Filtered (Magenta)
Filtered	The total number of frames Þltered by the deviceÕs
	bridge, at the device or port level.
Nothing	The Filtered scale is not currently measuring the number
	of packets Þltered by the bridge at the device or port
	level.

Bridge Statistics 4-17