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Chapter 2
Common Control Cards
Caution
Do not operate the ONS 15454 with only one XCVT or XC10G card. Two cross-connect cards of the
same type (either two XCVT or two XC10G cards) must always be installed.
Figure 2-6
Figure 2-6
STS-48
STS-192
2.5.2 VT Mapping
The VT structure is designed to transport and switch payloads below the DS-3 rate. The ONS 15454
performs VT mapping according to Telcordia GR-253-CORE standards.
numbering scheme for the ONS 15454 as it relates to the Telcordia standard.
Table 2-15
ONS 15454 VT Number
VT1
VT2
VT3
VT4
VT5
VT6
VT7
VT8
VT9
VT10
VT11
78-18106-01
shows the cross-connect matrix.
XC10G Cross-Connect Matrix
XC10G STS-1 Cross-connect ASIC (1152x1152 STS-1)
Input Ports
1
8X
2
.
.
.
4X
.
25
VT 1.5 Cross-connect ASIC
VTXC
336 bidirectional VT 1.5 cross-connects
VT cross-connection occurs on the 25th port.
VT Mapping
Output Ports
1
2
.
.
.
.
25
Telcordia Group/VT Number
Group1/VT1
Group2/VT1
Group3/VT1
Group4/VT1
Group5/VT1
Group6/VT1
Group7/VT1
Group1/VT2
Group2/VT2
Group3/VT2
Group4/VT2
Cisco ONS 15454 Reference Manual, R8.5
2.5.2 VT Mapping
8X
STS-48
4X
STS-192
Table 2-15
shows the VT
2-21
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