Cisco Systems 15454 11.18 Bridge and Roll

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Cisco ONS 15454 Reference Manual, R7.0
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Chapter 11 Circuits and Tunnels
11.18 11.18 Bridge and Roll
11.18 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 15454, ONS 15454 SDH, ONS 15600, ONS 15327, and ONS 15310-CL.
11.18.1 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 11-16 shows the Rolls window.
CE-1000-4 LCAS No No No
SW-LCAS Yes Yes Yes
Non-LCAS Yes2Yes2No
FC_MR-4 (enhanced mode) SW-LCAS Yes Yes Yes
Non-LCAS No No No
FC_MR-4 (line mode) Non-LCAS No No No
ML-Series SW-LCAS N o No No
Non-LCAS No No No
1. When adding or deleting a member from an LCAS VCAT circuit, Cisco recommends that you first put the member
in the OOS-MA,OOG service state to avoid service disruptions.
2. For CE-Series cards, you can add or delete members after creating a VCAT circuit with no protection. During the
time it takes to add or delete members (from seconds to minutes), the entire VCAT circuit will be unable to carry
traffic.
Table 11-17 ONS 15454 VCAT Card Capabilities (continued)
Card Mode
Add a
Member
Delete a
Member
Support
OOS-MA,OOG