Nortel Networks 1000E warranty Manual Switchover to Survival Mode

Configuring MG 1000T survivability and alternate primary controller Page 463 of 488

2The SWOTO expires after the time defined in LD 117.

3The MG 1000T Expansion re-starts. As the MG 1000T is going through the re-start procedure, it attempts to register with the MG 1000T Core.

4If a connection cannot be made to the core processor, the MG 1000T Expansion comes up in Survival Mode.

Manual Switchover to Survival Mode

Manual commands are provided to enable a technician to force a switch over to Survival Mode. These commands are available only on the MG 1000T Core. They can be used only if an IP link is established between the

MG 1000T Core and an MG 1000T Expansion. To manually switch over to Survival Mode, use the SOTS command in LD 135.

CAUTION — Service Interruption

A manually invoked switch-over causes a restart of the

MG 1000T.

After the SOTS command has been successfully executed, the MG 1000T Expansion remains in Survival Mode until the Switchback From Survival (SBFS) command is issued. The SBFS command is issued in LD 135.

CAUTION — System Failure

If the software is upgraded on the MG 1000T Core, it must also be upgraded on the MG 1000T Expansion for Survivability to function.

In Survival Mode, a valid database must be downloaded to the MG 1000T Expansion in order to function. The database is downloaded or “synchronized” each time a datadump is performed. An exact copy of the database on the MG 1000T Core is downloaded to the MG 1000T with every datadump.

Communication Server 1000E Installation and Configuration