Cabletron Systems CSX400 - Manual (Page 34)

CSX Bridge View
3-14 The Bridge Statistics Window
The Bridge Statistics window displays the following information:
Bridging Type
CSX200/400 devices will always display transparent-only.
Total Ports
Shows the total number of bridge ports available on this device, including virtual
ports available on the WAN interface(s).
Port
Displays each portÕs index number.
IfIndex
Interface index; a unique value for each network (interface) to which this port
connects. Note that a WAN port will connect to more than one interface
simultaneously, such as a T1 connection that occupies one physical port but can
be divided into as many as 24 virtual ports.
PortCircuit
When dealing with X.25 virtual circuits, itÕs possible for two Port Indexes to have
the same IfIndex. In such a case, Port Circuit contains the value of a MIB object
instance unique to the port; otherwise, Port Circuit is equal to 0.0. For example, if
Port 1 maps to IfIndex 1 and Port 2 maps to IÞndex 1, then the Port Circuits are 1.1
and 1.2 respectively.
DelayExceedDiscard
The number of frames a port has discarded due to an excessive transit time
through the bridge.
MtuExceedDiscard
Mtu stands for Òmaximum transfer unit;Ó it is the largest frame size that can be
processed by a device. A port discards any received frames that are larger than the
Mtu; this Þeld lists how many such frames were discarded.
The information in the Bridge Statistics window is a snapshot of the data. When
you open the Bridge Statistics window, the application polls the devices for
information. Devices are not polled again until you click mouse button 1 on the
Update
button, or close, then re-open the Statistics window.
NOTE
When a device is reset, statistics windows and/or statistics displays in the Bridge View
windows may display very large numbers for one polling interval. This is due to the
resetting of counters.