Figure 7-11 Single Roll From One Circuit To Another Circuit (Source Changes); Figure 7-12 Dual Roll To Reroute A Link; Figure 7-13 Dual Roll To Reroute To A Different Node - Cisco ONS 15600 Reference Manual

7.12.3 Single and Dual Rolls
Figure 7-11
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S2
Note Create a Roll To Circuit before rolling a circuit with the source on Node 3 and the destination on Node 4.
A dual roll involves two cross-connects. It allows you to reroute intermediate segments of a circuit, but
keep the original source and destination. If the new segments require new cross-connects, use the Bridge
and Roll wizard or create a new circuit and then perform a roll.
Dual rolls have several constraints:
• You must complete or cancel both cross-connects rolled in a dual roll. You cannot complete one roll
and cancel the other roll.
When a Roll To circuit is involved in the dual roll, the first roll must roll onto the source of the
•
Roll To circuit and the second roll must roll onto the destination of the Roll To circuit.
Figure 7-12
Figure 7-12
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Figure 7-13
Figure 7-13
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Cisco ONS 15600 Reference Manual, R6.0
7-22
Single Roll from One Circuit to Another Circuit (Source Changes)
Node 1
Node 3
illustrates a dual roll on the same circuit.
Dual Roll to Reroute a Link
Node 1
Original leg
New leg
illustrates a dual roll involving two circuits.
Dual Roll to Reroute to a Different Node
Node 1
Node 3
Chapter 7
D
Node 2
Node 4
Original leg
New leg
Node 2
D
D
Node 2
Node 4
Original leg
New leg
Circuits and Tunnels