Cisco ONS 15310-MA SDH, Procedure Manual, Page: 195 / 632

5-59
Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
78-19416-01
Chapter 5 Create Circuits and VC Low-order Path Tunnels
Before You Begin
–
Unlocked,automaticInService —Puts the circuit cross-connects in the
Unlocked-disabled,automaticInService service state and suppresses alarms and conditions.
When the connections receive a valid signal, the service state automatically changes to
Unlocked-enabled.
– Locked,maintenance —Puts the circuit cross-connects in the Locked-enabled,maintenance
service state. The maintenance state does not interrupt traffic flow; it suppresses alarms and
conditions and allows loopbacks to be performed on the circuit. Use Locked,maintenance for
circuit testing or to suppress circuit alarms temporarily. Change the administrative state to
Unlocked; Unlocked,automaticInService; or Locked,disabled when testing is complete. See the
“DLP-H111 Change a Circuit Service State” task on page 17-15 .
For additional information about circuit service states, refer to the “Circuits and Tunnels” chapter
in the
Cisco ONS 15310-MA SDH Reference Manual .
• Apply to drop ports—Check this check box if you want to apply the state chosen in the State field
to the circuit source and destination ports. CTC applies the circuit state to the ports only if the circuit
bandwidth is the same as the port bandwidth. If the port bandwidth is larger than the circuit, the
circuit must be the first circuit to use the drop port. If not, a Warning dialog box shows the ports
where the circuit state could not be applied. If the check box is unchecked, CTC does not change
the state of the source and destination ports.
Note
If ports in Unlocked administrative state are not receiving signals, loss of signal alarms are
generated and the service state of ports change to Unlocked-disabled,failed.
• Protected Drops—Check this check box if you want the circuit routed to protect drops only, that is,
to ONS 15454 SDH cards that are in 1:1, 1:N, or 1+1 protection. If you check this check box, CTC
displays only protected cards as source and destination choices.
Step 9
Click Next .
Step 10
Complete the “DLP-H63 Provision an STM-M Circuit Source and Destination” task on page 16-81 .
Step 11
Uncheck Route Automatically . When Route Automatically is not selected, the Using Required
Nodes/Spans and Review Route Before Circuit Creation check boxes are unavailable.
Step 12 Set the circuit path protection:
•
To route the circuit on a protected path, leave Fully Protected Path checked and continue with
Step 13 . Fully protected paths might or might not have SNCP path segments (with primary and
alternate paths), and the path diversity options apply only to SNCP path segments, if any exist.
• To create an unprotected circuit, uncheck Fully Protected Path and continue with Step 14 .
Step 13
If you selected Fully Protected Path in Step 12 and the circuit will be routed on an SNCP, choose one
of the following:
• Nodal Diversity Required —Ensures that the primary and alternate paths within the SNCP ring
portions of the complete circuit path are nodally diverse.
•
Nodal Diversity Desired —Specifies that node diversity is preferred, but if node diversity is not
possible, CTC creates fiber-diverse paths for the SNCP ring portion of the complete circuit path.
• Link Diversity Only —Specifies that only fiber-diverse primary and alternate paths for SNCP ring
portions of the complete circuit path are needed. The paths might be node diverse, but CTC does not
check for node diversity.
Step 14
Click Next . In the Route Review and Edit area, node icons appear so you can route the circuit manually.
The circuit source node is selected. Green arrows pointing from the source node to other network nodes
indicate spans that are available for routing the circuit.