Nortel Networks 1000M - Manual (Page 309)

Description 309
The LOCK command locks an IP Expansion Cabinet or Chassis in the mode
that it is in when the command is invoked. This does not require a restart of
the selected IP Expansion Cabinet or Chassis.
• If the IP Expansion Cabinet or Chassis receives the LOCK command in
normal mode, it goes into normal locked mode.
• If the IP Expansion Cabinet or Chassis receives the LOCK command in
survival mode, it goes into survival locked mode.
• When an IP Expansion Cabinet or Chassis is in normal locked or
in survival locked mode, no switchover (or switchback) is possible
(automatic or manual) until the UNLOCK command is issued.
The UNLOCK command unlocks an IP Expansion Cabinet or Chassis. This
does not require a restart of the selected IP Expansion Cabinet or Chassis.
• If the UNLOCK command is received in normal locked mode, the IP
Expansion Cabinet or Chassis returns to normal mode.
• If the UNLOCK command is received in survival locked mode, the IP
Expansion Cabinet or Chassis returns to survival mode.
• This command has no impact if it is received by an IP Expansion Cabinet
or Chassis that has not been locked into either normal or survival mode.
The LOCK/UNLOCK command can be used in any mode by a technician to
keep an IP Expansion Cabinet or Chassis in the current mode, regardless
of the state of the link to the Main Cabinet or Chassis. For example,
a technician can issue a SOTS command. This forces the selected IP
Expansion Cabinet or Chassis into survival mode prior to restarting the
Main Cabinet or Chassis. A LOCK command can be issued from the
Main Cabinet or Chassis prior to a restart. This keeps the selected IP
Expansion Cabinet or Chassis in survival mode, until manually returned to
normal mode. Manually returning to normal mode reboots the IP Expansion
Cabinet or Chassis.
These commands are applicable to both modes and can be used to keep a
cabinet or chassis in survival mode after the Automatic Switch Back occurs.
The LOCK/UNLOCK command is issued in LD 135.
LOCK
where
cab# = specified survivable IP Expansion Cabinet or Chassis
UNLOCK
where
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310 01.04 Standard
Release 5.0 13 May 2008
Copyright © 2008, Nortel Networks
.