Minimum Active Links; State Transition Variables: Alpha, Beta, And Gamma; Ima Link Addition And Deletion - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Minimum Active Links

State Transition Variables: Alpha, Beta, and Gamma

Table 28: IMA Frame Synchronization Link State Transition Variables
Setting Range
alpha 1–2
beta 1–5
gamma 1–5

IMA Link Addition and Deletion

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(symmetrical-config-and-operation | symmetrical-config-asymmetrical-operation)
configuration command. By default, symmetrical configuration and operation is selected.
You can set the minimum active links for an IMA group from 1 through 32.
P is the minimum number of links required to be active in the transmit direction for
Tx
the IMA group to move into the operational state.
P is the minimum number of links required to be active in the receive direction for the
Rx
IMA group to move into the operational state.
You configure P and P through the CLI when an IMA group is created. By default, 1 is
Tx Rx
selected.
For a symmetrical configuration, P
To set minimum links, execute the
configuration command. By default, symmetrical configuration and
minimum-links links
operation is selected.
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
Default Description
2 Consecutive invalid ICP cells
2 Consecutive errored ICP cells
1 Consecutive valid ICP cells
To set the frame synchronization option, execute the
ima-group-options frame-synchronization alpha number beta number gamma number
configuration command.
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
hierarchy level.
is equal to P .
Tx Rx
set interface interface-name ima-group-options
set interface interface-name
ima at the [edit interfaces interface-name encapsulation]
Copyright © 2017, Juniper Networks, Inc.
Table 28 on page 176.