Sts Around The Ring - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

12.10 STS around the Ring

Figure 12-33
Redundant
OC-N Bus
Redundant
OC-N Bus
Redundant
OC-N Bus
12.10 STS around the Ring
You can provision STS circuits with a source endpoint and a destination endpoint on the same node, and
route the traffic around a ring. The circuit source and destination can be on the same card, but you must
use two different ports on the card, see
Manual routing is required for STS around the ring circuits amd "Route Automatically" must be
unchecked in the CTC circuit provisioning pane. STS around ring circuits created using Transaction
Language 1 (TL1) are discovered by CTC and the status "COMPLETE" is displayed. STS around the
ring supports circuit sizes; STS-1, 3c, 6c, 9c, 12c, 24c, 36c, 48c, and 192cs. Both unidirectional and
bidirectional circuits are supported, and STS around the ring circuits are CCAT only, VCAT is not
supported. STS around ring circuits are linear circuits.
Cisco ONS 15454 Reference Manual, R8.5
12-34
Four-Shelf Node Configuration
Redundant
OC-N Feed
Up to 72 DS-3s, 84 DS-1s
ONS 15454, Node 1
Up to 72 DS-3s, 84 DS-1s
ONS 15454, Node 2
Up to 72 DS-3s, 84 DS-1s
ONS 15454, Node 3
Up to 96 DS-3s, 112 DS-1s
ONS 15454, Node 4
Chapter 12
Figure 12-34 on page 12-35.
SONET Topologies and Upgrades
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