ZyXEL Communications MSC1000G User Manual page 493

The following table describes the labels in this screen.
Table 250 IMA Statistics: IMA Line Card: Group Detail
LABEL
Link
NE Failure Status
FE Failure Status
Test Proc Stat
Admin Status
Ne State
Fe State
Failure Status
Clk Mode
Symmetry
Last Change
Max Differential
Delay(ms)
Least Delay Link
Max Differential
Delay observed
(ms)
Frame Sync Alpha
Frame Beta Value
Frame Gamma
Value
Running Seconds
(secs)
Management Switch Card User's Guide
DESCRIPTION
This displays the connection status of the E1 link. Click the number of a link to view its
details.
This field displays whether any failures were detected by the IMA line card.
This field displays whether any failures were detected by the remote IMA device.
This field displays whether the test pattern procedure is enabled or disabled on this link
and whether any links failed in the test.
This field displays the IMA group status.
This field displays the current operational state of the IMA group detected by the IMA line
card.
This field displays the current operational state of the IMA group detected by the remote
IMA device.
This field displays the current failure state of the IMA group.
This field displays which clock the IMA group uses.
ctc local displays if all E1 ports in this group follow the IMA line card's clock.
ctc loop displays if all E1 ports in this group follow the remote connected ADM device's
clock.
itc displays if each E1 port in this group uses its own clock. That means, the time
between two E1 ports might be different.
This displays the symmetrical configuration and symmetrical/asymmetrical operation
setting on this IMA group. It may be the following:
symop = Symmetrical Configuration + Symmetrical Operation
asymop = Symmetrical Configuration + Asymmetrical Operation
• Symmetrical Configuration: Each E1 physical line has an upstream and a downstream
IMA links. Select this to have an IMA link in this group be allowed to transmit and
receive data only when both the downstream and upstream links are active and
connected between the IMA devices.
• Symmetrical Operation: Both this IMA and the remote ADM device should wait for the
other end's "active confirmation" message before transmitting or receiving data.
• Asymmetrical Operation: Both this IMA and the remote ADM device can transmit or
receive data at any time.
This field displays the date and time the IMA group last changed its operational state.
This field displays the maximum number of milliseconds of differential delay that is
acceptable for the links in this IMA group.
This field displays the index number of the link in the IMA group that has the least
transmission delay. 0 displays if no link has been configured in the IMA group or the link
with the least link propagation delay has not yet been determined.
This field displays the latest maximum differential delay observed (in milliseconds)
between the links having the least and most transmission delay among the receiving
links in the IMA group.
This field displays the alpha value used to specify the number of consecutive invalid ICP
cells detected before changing the IMA state from Sync to Hunt.
This field displays the beta value used to specify the number of consecutive errored ICP
cells detected before changing the IMA state from Sync to Hunt.
This field displays the gamma value used to specify the number of consecutive valid ICP
cells detected before changing the IMA state from Sync to Hunt.
This field displays the amount of time (in seconds) since this IMA group has been in the
operational state.
Chapter 12 Statistics Screens
493