Reconfigured Circuits; Server Trails - Cisco ONS 15600 Reference Manual

7.15 Reconfigured Circuits

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CTC automatically merges aligned TL1-like circuits.
Note
If all connections from the master circuit and all connections from the merged circuits align to form one
complete circuit, the merge is successful. If all connections from the master circuit and some, but not
all, connections from the other circuits align to form a single complete circuit, CTC notifies you and
gives you the chance to cancel the merge process. If you choose to continue, the aligned connections
merge successfully into the master circuit, and unaligned connections remain in the original circuits. All
connections in the completed master circuit use the original master circuit name.
All connections from the master circuit and at least one connection from the other selected circuits must
be used in the resulting circuit for the merge to succeed. If a merge fails, the master circuit and all other
circuits remain unchanged. When the circuit merge completes successfully, the resulting circuit retains
the name of the master circuit.
7.15 Reconfigured Circuits
You can reconfigure multiple circuits, which is typically necessary when a large number of circuits are
in the PARTIAL status. When you reconfigure multiple circuits, the selected circuits can be any
combination of DISCOVERED, PARTIAL, DISCOVERED_TL1, and PARTIAL_TL1 circuits. You can
reconfigure tunnels, CTC-created circuits, and TL1-created circuits. The Reconfigure command
maintains the names of the original cross-connects.
Use the CTC Tools > Circuits > Reconfigure Circuits command to reconfigure selected circuits. During
reconfiguration, CTC reassembles all connections of the selected circuits into circuits based on path size,
direction, and alignment. Some circuits might merge and others might split into multiple circuits. If the
resulting circuit is a valid circuit, it appears as a DISCOVERED circuit. Otherwise, the circuit appears
as a PARTIAL or PARTIAL_TL1 circuit.
Note PARTIAL tunnel circuits do not split into multiple circuits during reconfiguration.

7.16 Server Trails

A server trail is a non-DCC (logical or virtual) link across a third-party network that connects two CTC
network domains. A server trail allows A-Z circuit provisioning when no DCC is available. You can
create server trails between two distant optical or EC-1 ports. The end ports on a server trail can be
different types (for example, an OC-3 port can be linked to an OC-12 port). Server trails are not allowed
on DCC-enabled ports.
Cisco ONS 15600 Reference Manual, R8.0
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Circuits types must be a compatible.
Circuit directions must be compatible. You can merge a one-way and a two-way circuit, but not two
one-way circuits in opposing directions.
Circuit sizes must be identical.
Circuit end points must send or receive the same framing format.
The merged circuits must become a DISCOVERED circuit.
Chapter 7 Circuits and Tunnels