Beta Draft Confidential
7-41/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring Trunks
About LTP
Static and Dynamic Delay
The Static Delay and Dynamic Delay fields on the Add Trunk dialog box represent the
measured one-way delay in units of 100 microseconds. The static delay is measured
upon trunk initialization and is updated only when the trunk state changes from Down
to Up. The static delay value is used in conjunction with the end-to-end delay routing
metric as a means of allowing users to route circuits over trunks with the lowest
end-to-end delay.
The Dynamic Delay field is a read-only field where the dynamic delay is measured
continually on operational trunks. Under most conditions, the dynamic delay value
will match the static delay value. However, if some characteristics of the underlying
transmission media for the trunk changes, such that the dynamic delay changes, this
value may differ from the static delay.
If you use the Modify Trunk dialog box to view attributes for a selected trunk, and you
notice that the static and dynamic delay values do not match, you can modify the static
delay value to match the dynamic delay. To do this, perform the following steps:
1. Expand the Trunks class node.
2. Select the desired trunk.
3. Perform one of the following:
• Select Modify from the Actions menu.
• Choose the Modify button from the toolbar.
• Right-click on the trunk instance node and select Modify from the pop-up
menu.
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