IBM OPTIONS ATM OC-3c, Руководство пользователя

Страница: 71 / 140

ATM VLAN LEC Status 9-5
The screen also shows the following ATM statistics:
Cells Received The number of ATM cells received by
the port.
Cells Transmitted The number of ATM cells
transmitted per second by the port.
Errored Cells The number of ATM cells that contain
an error, for example, cells that have Header Error
Control (HEC) errors.
Bad VCC Received The number of cells received
where the specified connection is not recognized by
the ATM Module (that is, the connection is not shown
in the ATM Module Connection Table).
The following buttons are available on this screen:
CLEAR SCREEN COUNTERS To make it easier to note
the changes in statistic values, you can use this button
to reset the value of statistics shown on the screen to
zero. Resetting the values shown on the screen does
not reset the statistic values stored on this device.
LEC This button takes you to the ATM VLAN LEC
Status screen, which allows you to monitor the health
of LECs and identifies the cause of any connection
failures.
The ATM VLAN LEC Status screen is described
in “ATM VLAN LEC Status” on this page.
PHYSICAL This button takes you to the Physical Layer
Statistics Screen, which allows you to monitor the
health of the physical connection, and is more useful
in a WAN environment. The Physical Layer Statistics
Screen is described in “ATM Physical Layer Statistics”
on page 9-10.
ATM VLAN LEC Status
The ATM VLAN LEC Status screen shows LEC statistics
for the ATM port. You can use the status information
to monitor the health of a VLAN’s LEC and to track
down the cause of any problems. You can also monitor
the amount of Ethernet traffic on the selected VLAN.
To access VLAN statistics, first access the ATM Port
Statistics screen, as described in “ATM Port Statistics”
on page 9-3, and then select the LEC button.
An example of the ATM VLAN LEC Status screen is
shown in Figure 9-4.
Figure 9-4
ATM VLAN LEC Status Screen