Datasheet

Contents
xi
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
11.4.1 Traditional DCC Tunnels 11-12
11.4.2 IP-Encapsulated Tunnels 11-13
11.5 Multiple Destinations for Unidirectional Circuits 11-14
11.6 Monitor Circuits 11-14
11.7 SNCP Circuits 11-14
11.7.1 Open-Ended SNCP Circuits 11-15
11.7.2 Go-and-Return SNCP Routing 11-15
11.8 MS-SPRing Protection Channel Access Circuits 11-16
11.9 MS-SPRing VC4 Squelch Table 11-17
11.10 Section and Path Trace 11-17
11.11 Path Signal Label, C2 Byte 11-18
11.12 Automatic Circuit Routing 11-19
11.12.1 Bandwidth Allocation and Routing 11-19
11.12.2 Secondary Sources and Destinations 11-19
11.13 Manual Circuit Routing 11-20
11.14 Constraint-Based Circuit Routing 11-24
11.15 Virtual Concatenated Circuits 11-25
11.15.1 VCAT Circuit States 11-25
11.15.2 VCAT Member Routing 11-25
11.15.3 Link Capacity Adjustment 11-26
11.15.4 VCAT Circuit Size 11-27
11.16 Bridge and Roll 11-28
11.16.1 Rolls Window 11-29
11.16.2 Roll Status 11-30
11.16.3 Single and Dual Rolls 11-30
11.16.4 Two Circuit Bridge and Roll 11-32
11.16.5 Protected Circuits 11-33
11.17 Merged Circuits 11-33
11.18 Reconfigured Circuits 11-34
11.19 Server Trails 11-34
CHAPTER 12 SDH Topologies and Upgrades 12-1
12.1 SDH Rings and TCC2/TCC2P Cards 12-1
12.2 Multiplex Section-Shared Protection Rings 12-2
12.2.1 Two-Fiber MS-SPRings 12-2
12.2.2 Four-Fiber MS-SPRings 12-5
12.2.3 MS-SPRing Bandwidth 12-8
12.2.4 MS-SPRing Application Sample 12-9