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Menus Reference Manual: Edit Remote Site - Activation Set-Up - Threshold Set-Up Menu
2 - Up Stability Timer
To prevent the unnecessary activation of the secondary link if the Up Threshold is only reached for a brief period, the
Up Stability Timer is used. It defines how long the primary link's throughput must be at or above the Up Threshold
before the secondary call is activated.
For example, using the default values, if a traffic level above the Up Threshold of 80% is maintained on the primary link
for a period of 2-min. (length of time the secondary link is "held inactive"), then the secondary link will be activated.
Enter:
time in minutes when link is down (from 1 to 60)
> 2
Default:
2 minutes
3 - Down Threshold
The Down Threshold determines when the secondary link is shut down again. It must be set lower than the Up
Threshold.
After the secondary link comes on-line, it will begin to share the load that would have gone across the primary link. For
example, if the primary link brings the secondary link on-line at a threshold of 80%, then both links will be carrying the
load.
The Down Threshold looks at the total throughput (both links together) to determine if the second link will be brought
down. The total throughput is compared to the throughput of a single link. When the total throughput drops below the
Down Threshold, the second link will be dropped.
Enter:
Percent of main link capacity (40 to 95)
> 60
Default:
60%
4 - Down Stability Timer
The Down Stability Timer is similar in operation to the Up Stability Timer. When the total link throughput drops below
the value set by the Down Threshold for a period of time defined by the Down Stability Timer, the secondary link will
be disconnected and placed back in the stand-by mode.
For example, if the total throughput (both links together) drops below 60% of the bandwidth of a single link (64 Kbps)
for a period of 10 minutes, the secondary link will be disconnected.
Enter:
time in minutes when link is up (from 1 to 60)
>10
Default:
2 minutes
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