Beta Draft Confidential
Configuring Fault-tolerant PVCs
Creating a Primary Port
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
1/19/05
14-3
Creating a Primary Port
To create a primary logical port, you assign a Service Name to a UNI logical port. (Do
not choose a port that will be used for backup.) When you configure the circuit,
choose this assigned Service Name as an endpoint instead of selecting a switch and
logical port combination. You can define Service Names for both PVC endpoints, if
needed. When you activate the backup port, the fault-tolerant PVC on the primary port
is rerouted, preserving VPI/VCIs in the process.
Lucent’s fault-tolerant PVC feature is transparent to the end user, meaning that you do
not have to configure the CPE to accommodate the new functionality. Therefore, end
users can benefit from this feature through the public Lucent-based ATM network, or
by combining their private Lucent switches with services provided by their public
carrier.
Creating a Backup Port
To create a backup port, first define a UNI DCE or DTE logical port and select the
Backup Service Name check box (see
). When a backup port is
not in use, the port is idle and does not use network resources.
You can create a number of backup ports for later use with the same Service Name.
You then select a particular backup port during the backup binding procedure (see
“Activating a Backup Binding Port” on page 14-6
!
Caution – When you define the UNI DCE or UNI DTE logical port for use as the
backup port, ensure that the VPI/VCI range of the logical port you select is equal to or
greater than the VPI/VCI range of the logical port you have selected for the primary
port. If the VPI/VCI range of the backup port is lower than that of the primary port, the
module may crash when service is switched to the backup port.
Содержание CBX 3500
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