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Cisco ONS 15454 Reference Manual, R7.0.1
OL-9217-01
Chapter 11 Circuits and Tunnels
11.18 11.18.3 Single and Dual Rolls
Note You can only reroute circuits in the DISCOVERED status. You cannot reroute circuits that are in the
ROLL_PENDING status.
11.18.3 Single and Dual Rolls
Circuits have an additional layer of roll types: single and dual. A single roll on a circuit is a roll on one
of its cross-connects. Use a single roll to:
• Change either the source or destination of a selected circuit (Figure 11-17 and Figure 11-18,
respectively).
• Roll a segment of the circuit onto another chosen circuit (Figure 11-19). This roll also results in a
new destination or a new source.
In Figure 11-17, you can select any available STS on Node 1 for a new source.
Figure 11-17 Single Source Roll
In Figure 11-18, you can select any available STS on Node 2 for a new destination.
TL1_ROLL A TL1 roll was initiated.
Note If a roll is created using TL1, a CTC user cannot complete or
cancel the roll. Also, if a roll is created using CTC, a TL1 user
cannot complete or cancel the roll. You must use the same
interface to complete or change a roll.
INCOMPLETE This state appears when the underlying circuit becomes incomplete. To
correct this state, you must fix the underlying circuit problem before the
roll state will change.
For example, a circuit traveling on Nodes A, B, and C can become
INCOMPLETE if Node B is rebooted. The cross-connect information
is lost on Node B during a reboot. The Roll State on Nodes A and C will
change to INCOMPLETE.
Table 11-18 Roll Statuses
State Description
83267
Node 1
S1
S2
D
Node 2
Original leg
New leg
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