Cisco ONS 15310-MA SDH, Руководство по процедурам

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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
Step 7
Define the circuit attributes:
• Name—Assign a name to the circuit. The name can be alphanumeric and up to 48 characters
(including spaces). Circuit names should be 44 characters or less if you want the ability to create
monitor circuits. If you leave the field blank, CTC assigns a default name to the circuit.
•
Size—Choose the optical circuit size. If you are creating an VC high-order path circuit, the choices
are VC4, VC4-2c, VC4-3c, or VC4-4c. If you are creating a VC low-order path circuit, Size displays
VC-12. You cannot change it.
• Bidirectional—Leave the default (checked) for this circuit.
•
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. Also, VC low-order path
tunnels and Ethergroup sources and destinations are unavailable.
• State—Choose the administrative state to apply to all of the cross-connects in a circuit:
–
unlocked —Puts the circuit cross-connects in the unlocked-enabled service state.
– locked, outOfGroup —Puts the circuit cross-connects in the locked-enabled,disabled service
state. Traffic is not passed on the circuit.
–
Automatic In Service —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; Automatic In Service; or locked, outOfGroup 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 to apply the administrative state chosen in the State field
to the circuit source and destination ports. CTC applies the administrative 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 is the first circuit to use the port. If not, a Warning dialog box shows the ports
where the administrative state could not be applied. If the check box is unchecked, CTC does not
change the service state of the source and destination ports.
Note 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,FLT.
• Protected Drops—Check this check box if you want the circuit routed to protect drops only, that is,
to ports that are in 1+1 protection. If you check this check box, CTC displays only protected cards
as source and destination choices.
Step 8
If the circuit will be routed on a path protection configuration, complete the “DLP-H57 Provision Path
Protection Selectors During Circuit Creation” task on page 16-75 .
Step 9 Click Next .
Step 10
Complete the “DLP-H63 Provision an STM-M Circuit Source and Destination” task on page 16-81 for
the optical circuit that you are creating.
Step 11 In the Circuit Routing Preferences area, uncheck Route Automatically .