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Chapter 6
Create Circuits and Low-Order Tunnels
Size—Choose the high-order circuit size: VC4, VC4-2c, VC4-3c, VC4-4c, VC4-8c, VC4-16c, or
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VC4-64c. Valid circuit sizes for a G-Series circuit are VC4, VC4-2c, VC4-3c, VC4-4c, VC4-8c,
and VC4-16c.
Bidirectional—Leave checked for this circuit.
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Create cross-connects only (TL1-like)—Check this check box if you want to create one or more
cross-connects to complete a signal path for TL1-generated circuits. If you check this box, low-order
tunnels and Ethergroup sources and destinations are unavailable.
State—Choose the administrative state to apply to all of the cross-connects in a circuit:
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–
–
–
–
For additional information about circuit service states, refer to the "Circuits and Tunnels" chapter
in the Cisco ONS 15454 SDH Reference Manual.
Apply to drop ports—Check this box if you want to apply the state chosen in the State field to the
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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 or, 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 box is unchecked, CTC does not change the state
of the source and destination ports.
Note
Protected Drops—Select this check box if you want the circuit routed to protect drops only, that is,
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to ONS 15454 SDH cards that are in 1:1, 1:N, or 1+1 protection. If you select this check box, CTC
shows only protected cards as source and destination choices.
If the circuit will be routed on an SNCP ring, complete the
Step 9
During Circuit Creation" task on page
Click Next.
Step 10
Complete the
Step 11
for the high-order circuit you are creating.
In the Circuit Routing Preferences area, uncheck Route Automatically.
Step 12
Set the circuit path protection:
Step 13
To route the circuit on a protected path, leave Fully Protected Path checked and continue with
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Step
78-17194-01
Unlocked—Puts the circuit cross-connects in the Unlocked-enabled service state.
Locked,disabled—Puts the circuit cross-connects in the Locked-enabled,disabled service state.
Traffic is not passed on the circuit.
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-D230 Change a Circuit State" task on page
If ports managed into the Unlocked administrative state are not receiving signals, loss of
signal alarms are generated and the port service state transitions to
Unlocked-disabled,failed.
"DLP-D97 Provision a High-Order Circuit Source and Destination" task on page 17-95
14.
NTP- D324 Create a Manually Routed High-Order Circuit
19-26.
"DLP-D218 Provision SNCP Ring Selectors
19-17.
Cisco ONS 15454 SDH Procedure Guide, R7.0
6-61
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