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Cisco ONS SONET TL1 Command Guide, R6.0
Chapter 2 Procedures and Provisioning
2.12.15 Loopback Provisioning Rules
The TL1 commands are:
• ED-FFP-OCH
Example of editing splitter protection group attributes:
ED-FFP-OCH::CHAN-2-1:100:::PROTID=DC-METRO3,RVRTV=Y,
RVTM=5.0,PSDIRN=BI;
2.12.15 Loopback Provisioning Rules
1. Loopback can be provisioned on the client and trunk ports.
2. Both terminal and facility loopback types can be provisioned.
3. Loopback is not applicable when the framing type is UNFRAMED (HDTV, DV6000).
4. For the protect TXP, the following loopback rules apply to the trunk ports:
a. Only one loopback can be provisioned at the trunk ports at any given time.
b. Loopback is allowed if the sibling trunk port is OOS-MT.
c. Provisioning a loopback on a trunk port will trigger the inhibit switching command
LOCKOUT_OF_PROTECTION or LOCKOUT_OF_WORKING depending on whether the
working or the protect is placed in a loopback.
d. Once a loopback is provisioned on a trunk port, both the trunk ports will transmit the signal of
the loopback port signal.
e. A loopback will be denied if there is a FORCE or MANUAL switching command in place on
the trunk ports.
f. You cannot remove the inhibit switching command issued as a result of the loopback. This
command will be removed only when the loopback is removed.
The TL1 commands are:
• ED-FFP-OCH
Example of editing splitter protection group attributes:
ED-FFP-OCH::CHAN-2-1:100:::PROTID=DC-METRO3,RVRTV=Y,
RVTM=5.0,PSDIRN=BI;
2.12.16 Automatic Laser Shutdown Provisioning Rules
1. ALS can be provisioned on the client and trunk ports.
2. If the trunk port is configured in a splitter protection group only the working trunk can be
provisioned for ALS. However, provisioning on the working trunk port is reflected on the protect
port.
3. For the protected TXP, ALS mode will only take effect when both ports receive LOS.
The TL1 commands to provision are:
• ED-ALS
Example of editing ALS attributes:
ED-ALS::FAC-1-1-1:100:::ALSMODE=Y,ALSRCINT=130,ALSRCPW=35.1,RLASER=Y;
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