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Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
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.
Figure 11-18 Single Destination Roll
Figure 11-19 shows one circuit rolling onto another circuit at the destination. The new circuit has
cross-connects on Node 1, Node 3, and Node 4. CTC deletes the cross-connect on Node 2 after the roll.
83267
Node 1
S1
S2
D
Node 2
Original leg
New leg
83266
Node 1
S
D2
D1
Node 2
Original leg
New leg