Specifications

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Cisco ONS 15454 and Cisco ONS 15327 TL1 Command Guide, R3.3
May 2002
Chapter 3 TL1 Command Descriptions
TL1 Commands
3.5.44 INH-SWTOPROTN-EQPT: Inhibit Switch to Protection Equipment
(Cisco ONS 15454 only)
This command instructs the NE to inhibit automatic or manual switching of an equipment unit to
protection. Use the ALW-SWTOPROTN-EQPT command to release the inhibit.
INH-SWTOPROTN-EQPT is used for non-SONET line cards (e.g. DS1, DS3, DS3XM and EC1 cards).
DS1 and DS3 cards have 1:1 and 1:N equipment protection. DS3XM and EC1 cards have only 1:1
equipment protection. When performing a lockout with this command, the traffic will be switched from
the unit specified by the AID, unless the working unit being protected has failed or is missing. When
performing a lock on with this command and the working unit specified in the AID is in standby, sending
this command will also initiate a traffic switch. When traffic is locked on a working unit or locked out
of the protection unit with this command, the protection unit will not carry traffic, even if the working
unit is pulled from the system.
Sending this command to a working unit in a 1:N protection group does not prevent a protection switch
from another working unit in the same protection group. All the working units must be sent this
command to prevent a protection switch. If the command is sent only to a subset of the working units,
only those working units will have traffic locked on.
The inhibit state is persistent over TCC+ side switches and removal/reboot of all the units in the
protection group. The inhibit state can, but does not have to be persistent over a complete power cycle
of the NE.
The unit specified by the AID will raise the condition of INHSWPR when this command is sent.
Notes:
1. This command only supports one value of the <DIRN> parameter - BTH. A command with any other
value is considered an incorrect use of the command. An IDNV (Input, Data Not Valid) error
message should be responsed.
2. This command is not used for the common control (TCC+ or XC/XCVT) cards. A command on a
common control card will receive an IIAC (Input, Invalid Access Identifier) error message. To use
the common control card switching commands, use the SW-DX-EQPT and ALW-SWDX-EQPT
commands.
3. This command is not used for SONET (OCN) cards. A command on a SONET card will receive an
IIAC (Input, Invalid Access Identifier) error message. To use a SONET card switching command,
use the OPR-PROTNSW and RLS-PROTNSW commands.
4. If this command is used on a card that is not in a protection group, the SNVS (Status, Not in Valid
State) error message should be received.
5. If this command is used on a card that is already in the inhibit state, the SAIN (Status, Already
Inhibited) error message should be received.
6. If sending the inhibit switch to protection command to a working card when the protect card in the
same protection group has already raised the condition of INHSWWKG, the SPLD (Status,
Protection unit Locked) error message should be responsed.
Input Example INH-SWDX-EQPT:CISCO:SLOT-1:1234;
Errors This message generates all the default errors
Section INH-SWDX-EQPT Description (continued)