Cisco ONS 15310-MA SDH Procedure Manual page 184

Before You Begin
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• Apply to drop ports—Check this check box to apply the unlocked administrative state 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.
Symmetric—Checked is the default. You cannot change it.
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Member size—Choose the member size. For information about the member size supported for each
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card, refer to the "Circuits and Tunnels" chapter in the Cisco ONS 15310-MA SDH Reference
Manual.
• Num. of members—Choose the number of members from the drop-down list. For information about
the number of members supported for each card, refer to the "Circuits and Tunnels" chapter in the
Cisco ONS 15310-MA SDH Reference Manual.
Note
Mode—Choose the protection mode for the VCAT circuit:
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Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
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locked, outOfGroup—Puts the member cross-connects in the locked-enabled,disabled service
state. Traffic is not passed on the circuit.
Automatic In Service—Puts the member cross-connects in the Out-of-Service and
Autonomous, Automatic In-Service (unlocked-disabled,automaticInService) service state.
When the connections receive a valid signal, the cross-connect service states automatically
change to unlocked-enabled.
locked, maintenance—Puts the member cross-connects in the locked-enabled,maintenance
service state. This service state does not interrupt traffic flow and allows loopbacks to be
performed on the circuit, but suppresses alarms and conditions. Use the locked, maintenance
administrative state for circuit testing or to suppress circuit alarms temporarily. Change the
administrative state to unlocked; OOS; or Automatic In Service when testing is complete.
locked, outOfGroup—(LCAS only) Puts VCAT member cross-connects in the Out-of-Service
and Management, Out-of-Group (locked-enabled,outOfGroup) service state. This
administrative state is used to put a member circuit out of the group and to stop sending traffic.
locked-enabled,outOfGroup applies only to the cross-connects on an end node where VCAT
resides. The cross-connects on intermediate nodes are in the locked-enabled,maintenance
service state.
When creating open-ended VCAT circuits the number of members must be the same on each
side of the virtual concatenated group (VCG). The configuration with different number of
members on each side of circuit is not supported. This is applicable to circuits created on
CE-Series and ML-Series cards.
None—Provides no protection. A failure on one member causes the entire VCAT circuit to fail.
For CE-100T-8 or CE-MR-6, 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. For ML-100T-8 cards, you cannot add or
delete members if the protection mode is None.
SW-LCAS—Allows the VCAT circuit to adapt to member failures and keep traffic flowing after
failures at a reduced bandwidth. Sw-LCAS provides interoperability with the ONS 15454
ML-Series cards. Sw-LCAS uses legacy SDH failure indicators like AIS-P and RDI-P to detect
member failure. You cannot add or delete members from a VCAT circuit with Sw-LCAS
protection.
Chapter 5 Create Circuits and VC Low-order Path Tunnels
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