Cisco Systems 15454-FTF2 11.18.4 VCAT Circuit Size

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Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 11 Circuits and Tunnels
11.18.4 VCAT Circuit Size
Note Protection switching for LCAS, SW-LCAS, and non-LCAS VCAT circuits might exceed 60ms. Traffic
loss for VT VCAT circuits is approximately two times more than an STS VCAT circuit. You can
minimize traffic loss by reducing path differential delay.
11.18.4 VCAT Circuit Size
Table 11-17 lists supported VCAT circuit rates and number of members for each card.
Use the Members tab in the Edit Circuit window to add or delete members from a VCAT circuit. The
capability to add or delete members depends on the card and whether the VCAT circuit is LCAS,
SW-LCAS, or non-LCAS.
• CE-100T-8 cards—You can add or delete members to an LCAS VCAT circuit without affecting
service. Before deleting a member of an LCAS VCAT circuit, Cisco recommends t hat you put the
member in the OOS-MA,OOG service state. If you create non-LCAS VCAT circuits, adding and
deleting members to the circuit is possible, but service-affecting.
• CE-1000-4 cards—You can add or delete SW-LCAS VCAT members, although it might affect
service. Before deleting a member, Cisco recommends that you put the member in the
OOS-MA,OOG service state. If you create non-LCAS VCAT circuits, adding and deleting members
to the circuit is possible, but service-affecting.
• FC_MR-4 (enhanced mode) card—You can add or delete SW-LCAS VCAT members, although it
might affect service. Before deleting a member, Cisco recommends that you put the member in the
OOS-MA,OOG service state. You cannot add or delete members from non-LCAS VCAT circuits on
FC_MR-4 cards.
Table 11-17 ONS 15454 Card VCAT Circuit Rates and Members
Card Circuit Rate Number of Members
CE-100T-8 VT1.5 1–64
STS-1 1–31
1. A VCAT circuit with a CE-Series card as a source or destination and an ML-Series card as a source or
destination can have only two members.
CE-1000-4 STS-1 1–211
STS-3 1–7
FC_MR-4 (line rate mode) STS-1 24 (1 Gbps port)
48 (2 Gbps port)
STS-3c 8 (1 Gbps port)
16 (2 Gbps port)
FC_MR-4 (enhanced mode) STS-1 1–24 (1 Gbps port)
1–48 (2 Gbps port)
STS-3c 1–8 (1 Gbps port)
1–16 (2 Gbps port)
ML-Series STS-1, STS-3c,
STS-12c
2