Datasheet

5-23
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 5 Ethernet Cards
5.10 CE-1000-4 Card
• Adding or removing cross connects from the VCG is not service affecting if the associated members
are not in group.
The CE-1000-4 card supports a non link capacity adjustment scheme (no-LCAS). This also makes it
compatible with the ONS 15454 CE-100T-8 and ML-Series cards. The CE-1000-4 card supports VCAT
groups (VCGs) that are fixed and not reconfigurable when no-LCAS is enabled (fixed VCGs).
The following guidelines apply to fixed VCGs:
• Members can be added or removed from VCGs using CTC or TL1.
• Members cannot be put into or out of service unless the force command mode is instantiated.
Note This is possible with CTC as it assumes the force command mode by default. However, to
put members into or out of service using TL1, the force command mode must be set.
• Cross-connects can be added or removed from VCGs using CTC or TL1. This is service affecting
as long as the VCG size (TXCOUNT) is not realigned with the loss of connections.
The CE-1000-4 card supports VCAT differential delay and provides these associated features:
• Supports a maximum VCG differential delay of 122 ms in each direction.
• Supports all protection schemes (path protection, two-fiber BLSR, four-fiber BLSR) on VCAT
circuits that are split-fiber routed.
• Supports two-fiber BLSR on VCAT circuits that are common-fiber routed.
• Differential delay compensation is automatically enabled on VCAT circuits that are diverse (split
fiber) routed, and disabled on VCAT circuits that are common fiber routed.
Figure 5-9 shows the CE-1000-4 card faceplate and block diagram.