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Chapter 26 ima Commands
Management Switch Card User’s Guide
725
Syntax:
ima group link <slot-gid> <linklist>
where
This command sets link members for the specified IMA group.
Syntax:
ima group sym <slot-gid> symop|asymo|asymcfg
where
This command sets two parameters: Symmetrical Configuration and Symmetrical/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 line and the remote ADM device should wait for the other
end’s “active confirmation” before transmitting or receiving data.
Asymmetrical Operation: Both this IMA line and the remote ADM device do NOT need to wait for
the other end’s “active confirmation” before transmitting or receiving data.
Syntax:
ima group maxdifdelay <slot-gid> <maxdifdelay>
where
This command sets the maximum number of milliseconds the IMA group can wait to receive
delayed data.
linklist =
The number of one or multiple link(s) that you want to add into this IMA
group. For examples, 1,3 means links 1 and 3. 1~3 means links 1, 2 and
3.
symop =
Symmetrical Configuration + Symmetrical Operation
asymop =
Symmetrical Configuration + Asymmetrical Operation
maxdifdelay =
This is the maximum number of milliseconds (25~300) the IMA group can
wait to receive delayed data. If a delay exceeds this setting, the IMA triggers
a Loss of Delay Synchronization alarm and changes the state of the link to
indicate a line defect.

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