Configuring the T1/E1 Interface 99
Figure 70 IMA Link Status Screen
The IMA Link Status screen lists the following information pertaining to the IMA
status of an individual link in an IMA group.
NE Tx State—The near-end transmit state in the interworking link state machine.
Table 23 lists the possible link states.
NE Rx State—The near-end transmit state in the interworking link state machine.
Table 23 lists the possible link states.
FE Tx State—The far-end transmit state in the interworking link state machine.
Table 23 lists the possible link states.
FE Rx State—The far-end transmit state in the interworking link state machine.
Table 23 lists the possible link states.
NE Rx Failure—Near-end Rx failure status in the interworking link state machine.
lists the possible IMA link failure status conditions. Table 24 lists the possible IMA
link failure status conditions.
FE Rx Failure—Far-end Rx failure status in the interworking link state machine.
Table 24 lists the possible IMA link failure status conditions.
Table 23 Possible IMA Link States
State Tx Condition Rx Condition
not in group This link is not part of the IMA
group.
This link is not part of the IMA
group.
unusable blocked This is caused by LOS, which
would result in back clock from
the framer if the port is in
looped timing.
This is caused by AFA, excessive
delay, or mismatched protocol.
usable This link is ready to pass data. This link is ready to pass data.
active This link is passing data. This link is passing data.
