Multi-Tech MultiFRAD 200 Series, Руководство пользователя

Страница: 34 / 85

34
MultiFRAD II User Guide
Statistics
The Statistics dialog box enables you to view statistics on the major events of the MultiFRAD. The
Statistics dialog box changes depending on the way the WAN port is configured. If the MultiFRAD is
configured for point-to-point operation, the button to the right of the WAN button changes from
“Frame Relay” to “PPP” and the DLCI button will no longer be active. If the WAN port is configured for
frame relay, then the button to the right of the WAN reads “Frame Relay” and the DLCI button is
active.
Statistics can be a useful troubleshooting tool. For example, the WAN Statistics show whether the
MultiFRAD is sending or receiving on its composite link or WAN port. When the MultiFRAD is
configured in a frame relay mode, it will transmit management frames approximately every ten
seconds, trying to establish communication with the provider’s switch. If the unit is sending frames
but not receiving any, this may be an indication of a problem with the link device or the frame relay
network. Statistics in the frame relay dialog box show the actual number of management frames sent
and received, and can also indicate a link or frame relay network problem. (One way to determine if a
problem is local would be to set your DSU to internal clocking and put it in loopback mode using an
RJ-45 DSU loopback cable. If the MultiFRAD, cable, and DSU are all functioning properly, the WAN
statistics will reflect that fact by showing the same number of bytes received as transmitted.)
Another useful screen is DLCI Statistics, which shows the status of the PVC; e.g., it indicates
whether the selected DLCI is “active” or “inactive” and shows if the MultiFRAD is experiencing
network congestion (reflected by FECNs or BECNs received).