6-19
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 6 Circuits and Tunnels
Cross-Connect Card Capacities
Figure 6-13 A VT1.5 tunnel
shows a six-node ONS 15327 ring with two VT tunnels. One tunnel carries VT1.5 circuits
from Node 1 to Node 3. The second tunnel carries VT1.5 circuits from Node 1 to Node 4.
shows the VT1.5-mapped STS usage at each node in a ring based on protection scheme and use of VT
tunnels. In the
example, the circuit travels west through Nodes 2, 3, and 4. Subsequently,
VT-mapped STS usage at these nodes is greater than at Nodes 5 and 6.
Figure 6-14 A six-node ring with two VT1.5 tunnels
61850
STS Matrix
VT Tunnel
VT1.5
VT1.5 Matrix
OC
Trunk
OC
Trunk
61851
VT1.5 source
Node 1
Node 4
VT1.5
drop
Node 2
Node 3
VT Tunnel
Node 6
28 VT1.5
circuits
28 VT1.5
circuits
Node 5
VT1.5
drop
BLSR
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...