Specifications

3-178
Cisco ONS 15454 and Cisco ONS 15327 TL1 Command Guide, R3.3
May 2002
Chapter 3 TL1 Command Descriptions
TL1 Commands
3.5.128 SW-TOPROTN-EQPT: Switch to Protection Equipment
(Cisco ONS 15454 only)
This command instructs the NE to perform an equipment unit protection switch.
This command is used for non-SONET line cards (e.g. DS1, DS3, DS3XM, and EC1). DS1 and DS3
cards have 1:1 and 1:N equipment protection. DS3XM and EC1 cards have only 1:1 equipment
protection.
This command will switch the traffic from the working card specified in the AID to the protect card.
There is a priority for the switch to protection commands. In a 1:N protection group with N > 1, consider
two working cards - A and B. Card A is switched to the protect card with the SW-TOPROTN command.
If card B is pulled from the system, the protect card will carry the traffic of card B and card A will raise
the FAILTOSW condition and carry traffic. When card B is replaced and the revert timer expires, card
B will carry traffic and card A will switch to the protect card. The FAILTOSW condition on card A will
be cleared. Note:1:N protection groups in the system are always revertive.
In a revertive protection group, the unit specified by the AID will raise the standing condition of
WKSWPR if the command were executed without an error. In a non-revertive protection group, the unit
specified by the AID will raise the transient condition of WKSWPR if the command were executed
without an error.
Notes:
1. The default PROTID is the protecting unit if there is only one protection unit per protection group
in the NE, otherwise a DENY error message will be responsed.
2. This command only supports one value of the <DIRN> parameter - BTH or null. A command with
any other value is considered an incorrect use of the command. An IDNV (Input, Data Not Valid)
error message will be responsed
3. This command is not used for the common control (TCC+ or XC/XCVT) cards. A command on a
common control card will generate 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.
4. This command is not used for SONET (OCN) cards. A command on a SONET card will generate an
IIAC (Input, Invalid Access Identifier) error message. To use a SONET card switching command,
use the OPR-PROTNSW and RLS-PROTNSW commands.
5. If this command is used on a card that is not in a protection group, the SNVS (Status, Not in Valid
State) error message will be responsed.
Input Format SW-DX-EQPT:[<TID>]:<AID>:<CTAG>::[<MODE>][,];
where:
• <AID> identifies the equipment (XC/XCVT) unit in the NE that is to be switched
with its mate unit; <AID> is from the “EQPT” section on page 4-11
• Valid values for <MODE> are shown in the “CMD_MODE” section on
page 4-23
Input Example SW-DX-EQPT:CISCO:SLOT-1:123::FRCD
Errors This message generates all the default errors
Section SW-DX-EQPT Description (continued)