Cisco ONS 15454 SDH Manual page 31

Chapter 11 Circuits and Tunnels
Table 11-15
Routing Preferences
Common fiber
Split fiber
Split fiber with secondary
destinations
11.17 Bridge and Roll
The CTC Bridge and Roll wizard reroutes live traffic without interrupting service. The bridge process
takes traffic from a designated "roll from" facility and establishes a cross-connect to the designated "roll
to" facility. When the bridged signal at the receiving end point is verified, the roll process creates a new
cross-connect to receive the new signal. When the roll completes, the original cross-connects are
released. You can use the bridge and roll feature for maintenance functions such as card or facility
replacement, or for load balancing. You can perform a bridge and roll on the following ONS platforms:
ONS 15600, ONS 15454, ONS 15454 SDH, and ONS 15310-CL, and ONS 15310-MA.
11.17.1 Rolls Window
The Rolls window lists information about a rolled circuit before the roll process is complete. You can
access the Rolls window by clicking the Circuits > Rolls tabs in either network or node view.
Figure 11-14
78-18119-01
Protection options for Open-Ended VCAT Circuits
Routing Mode
Manual/Auto
Manual/Auto
Manual/Auto
shows the Rolls window.
Protection Options
Fully protected (Line only)
•
Unprotected
•
PCA
•
Fully protected (Line only)
•
• Unprotected
• PCA
• DRI
Path protection is not supported.
Note
• Fully protected
Line protection is not supported.
Note
DRI
•
Cisco ONS 15454 SDH Reference Manual, R8.5
11.17 Bridge and Roll
11-31