Replacing a failed VLNC35/VLNC50/52/55 circuit pack is simplified by automatic provisioning of the set circuit pack values. The SYSCTL circuit pack maintains a provisioning map for the VLNC35/VLNC50/52/55 circuit pack, so when the transmission pack is replaced, the SYSCTL circuit pack automatically downloads the correct values (those that were previously provisioned) to the new circuit pack. Likewise, if the SYSCTL circuit pack is ever replaced, the correct provisioning data from the VLNC35/VLNC50/52/55 circuit pack is automatically uploaded to the new SYSCTL circuit pack's nonvolatile memory.
Auto provisioning is the ability of an NE to detect the presence of equipment, validate it, and then assign default original values. Nonvolatile memory (NVM) and/or hardware registers maintain the parameter values. Auto-provisioning allows an NE to be set up initially with minimal user intervention. Auto-provisioning also supports a self inventory function which allows operations center personnel to learn about and track activities at a remotely located NE.
Replacing a failed circuit pack is simplified by automatic provisioning of the original circuit pack values. The SYSCTL circuit pack maintains a provisioning map for the VLNC35/VLNC50/52/55 circuit pack, so when it is replaced, the SYSCTL circuit pack automatically downloads the correct values to the new circuit pack. Likewise, if the SYSCTL circuit pack is ever replaced, the correct provisioning data from every other circuit pack in the shelf is automatically uploaded to the new SYSCTL circuit pack's nonvolatile memory. However, if a SYSCTL circuit pack is replaced, some provisioned data is lost, unless the data is backed up before replacement.
If there are Ethernet cross-connections and the database is restored, then the VLNC2, VLNC50/52/55 and VLNC35 circuit packs are hard-reset. The circuit pack resets can cause an outage of up to two minutes. In Release 5.1, Alcatel-Lucent 1850 TSS-5 supports a restoration of circuit IDs only, which is hitless. The circuit ID restoration can be used when replacing a VLNC2 SYSCTL.
Some items that are auto-provisioned include the following:
System target identifier (TID) (which can be changed at initial start-up)
Default threshold-crossing alert (TCA) profiles
Circuit packs
Synchronization default mode
The NE detects and reports the removal of equipment. The removal of equipment does not cause the NE to delete any entities. Removal of a piece of equipment may result in equipment alarms and insertion of maintenance signals when the state-related data is updated. However, removal of equipment does not necessarily mean that the provisioning of the shelf slot has changed. The user must execute specific commands to remove an entity from the system database.
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