Switchback From Survival Mode - Nortel Meridian 1 Succession 1000M Installation And Configuration Manual

Page 496 of 562

Switchback from survival mode

553-3011-210 Standard 1.00
Survivability
A survivable IP expansion cabinet or chassis can switch back to normal mode
after communication with the main cabinet or chassis is restored.
The following two scenarios can trigger a cabinet or chassis in survival mode
to return to normal mode:
• Automatic Switch Back (AUTOSB) allows an IP expansion cabinet or
chassis to automatically switch back from survival mode to normal mode
as soon as the link with the main cabinet or chassis is restored, and the
SWOTO timer has expired. A restart is initiated on the IP expansion
cabinet or chassis. At the end of the system start, the IP expansion cabinet
or chassis is ready to operate in normal mode.
• Manual Switch Back allows a technician to force the system into normal
mode by issuing the SBFS command. This command returns the system
to normal mode after the SOTS command has been used.
Automatic Switch Back from survival mode
When the Automatic Switch Back option is configured for a survivable IP
expansion cabinet or chassis, the IP expansion cabinet or chassis
automatically switches back from survival mode to normal mode as soon as
the link with the main cabinet or chassis is restored and the SWOTO timer
expires.
A valid database must be downloaded to the IP expansion cabinet or chassis
for this option to take effect. The database is downloaded or "synchronized"
each time a datadump is performed.
The AUTOSB command is available in LD 117:
CHG AUTOSB <cab#> <Switchback setting>
Where:
cab# = 1–4
Switchback setting = (YES) NO
When the switchback parameter is set to YES, the cabinet or chassis
automatically switches back from survival mode as soon as the SWOTO
October 2003