Cisco Systems 15310-MA 7.7.5 Open-Ended VCAT

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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Chapter 7 Circuits and Tunnels
Virtual Concatenated Circuits
• For SW-LCAS circuits used when interoperating with ONS 15454 ML-Series cards, you cannot add
or delete members.
• For non-LCAS VCAT circuits that use CE-100T-8 or CE-MR-6 cards, adding and deleting members
to/from the circuit is possible, but service-affecting. For ML-100T-8 cards, you cannot add or delete
members from non-LCAS VCAT circuits without affecting the entire VCAT circuit.
Table 7-7 summarizes the VCAT capabilities for the CE-100T-8 and ML-100T-8 cards.
7.7.5 Open-Ended VCAT
For applications where the complete end-to-end VCAT circuit is not in a CTC managed network, CTC
will only see either the source or the destination of the Virtual Concatenated Group (VCG) and some of
the intermediate nodes. Figure 7-5 shows an end-to-end VCAT circuit. The termination points of the
end-to-end VCAT circuit, with VCAT functionality, are referred to as the VCAT-Source and
VCAT-Destination. The termination points of the CTC managed circuit, which is the Open-Ended VCAT
circuit, is referred to as simply the Source and Destination.
Table 7-7 ONS 15310-MA SDH VCAT Card Capabilities
Card Mode
Add a
Member
Delete a
Member
Support
locked-enabled,o
utOfGroup
CE-100T-8 LCAS Yes Yes Yes
SW-LCASNoNoNo
Non-LCAS Yes1
1. For CE-100T-8 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.
Yes1No
ML-100T-8 LCAS Yes Yes Yes
SW-LCASNoNoNo
Non-LCAS No No No
CE-MR-6 LCAS Yes Yes Yes
SW-LCAS Yes Yes No
Non-LCAS Yes Yes No