Juniper ACX2000

(symmetrical-config-and-operation | symmetrical-config-asymmetrical-operation)
configuration command. By default, symmetrical configuration and operation is selected.
Minimum Active Links
You can set the minimum active links for an IMA group from 1 through 32.
•
P
Tx
is the minimum number of links required to be active in the transmit direction for
the IMA group to move into the operational state.
•
P
Rx
is the minimum number of links required to be active in the receive direction for the
IMA group to move into the operational state.
You configure P
Tx
and P
Rx
through the CLI when an IMA group is created. By default, 1 is
selected.
For a symmetrical configuration, P
Tx
is equal to P
Rx
.
To set minimum links, execute the set interface interface-name ima-group-options
minimum-links links configuration command. By default, symmetrical configuration and
operation is selected.
State Transition Variables: Alpha, Beta, and Gamma
Frame synchronization is a process of recovery of the aggregated frames. The frame
synchronization states form a basis for the different error and maintenance states. You
can configure the IMA frame synchronization link state transition variables as alpha, beta,
and gamma. The valid ranges and default values are shown in Table 28 on page 176.
Table 28: IMA Frame Synchronization Link State Transition Variables
DescriptionDefaultRangeSetting
Consecutive invalid ICP cells21–2alpha
Consecutive errored ICP cells21–5beta
Consecutive valid ICP cells11–5gamma
To set the frame synchronization option, execute the set interface interface-name
ima-group-options frame-synchronization alpha number beta number gamma number
configuration command.
IMA Link Addition and Deletion
When an IMA group is up, you can add links to or delete links from the group without
dropping cells.
To create an IMA link, you must:
•
Configure the encapsulation as ima at the [edit interfaces interface-name encapsulation]
hierarchy level.
Copyright © 2017, Juniper Networks, Inc.176
ACX Series Universal Access Router Configuration Guide