3Com S330 manual Possible IMA Link States, State Tx Condition Rx Condition

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.

Table 23 Possible IMA Link States

State Tx Condition Rx Condition

not in 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 link is not part of the IMA group.

This is caused by AFA, excessive delay, or mismatched protocol.

usable	This link is ready to pass data.
active	This link is passing data.

This link is ready to pass data.

This link is passing data.

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.