Cables to Go CDM-570L manual Show Hub Statistics, 31STDMA Statistics screen Remote

Vipersat Configuration

Figure 3-31STDMA Statistics screen (Remote)

The window of time that is used to average the accumulation of statistics can be set by entering W at the command prompt in the Hub screen, then entering the number of seconds (from 1 to 20).

To clear (reset to 0) these statistics, enter C at the command prompt.

Show Hub Statistics

Entering a W at the command prompt in the STDMA screen (figure 3-6)displays the current statistics for the target CDM-570/570L Hub, as shown in figure 3-32.

Figure 3-32Hub Statistics screen

The Burst Controller monitors statistics in the received ACK from each Remote. The statistics report the fill status of the STDMA buffers. The Burst Controller builds a table of the group and calculates the relative buffer fill for each Remote. It then calculates the length of the Data Slot for each Remote based on the Mini- mum Slot Size plus a percentage of the Available Bandwidth. Idle remotes would receive a Data Slot equal to the Minimum Slot Size.

In the figure 3-32,Remote 1 with IP address 10.1.128.1 had activity during the averaging period. It captured 37.8% of the total slot time and had an average slot length of 283 ms. Remotes 2, 3, and 4 had 41.5%, 18.1%, and 7.6% respec- tively. The dynamic range of STDMA is a function of the difference between

3-22 Vipersat CDM-570/570L User Guide