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12-22
Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
Chapter 12 SONET Topologies and Upgrades
12.8 12.8 OC-N Speed Upgrades
Figure 12-20 Four-Shelf Node Configuration
12.8 OC-N Speed Upgrades
A span is the optical fiber connection between two ONS 15454 nodes. In a span (optical speed) upgrade,
the transmission rate of a span is upgraded from a lower to a higher OC-N signal but all other span
configuration attributes remain unchanged. With multiple nodes, a span upgrade is a coordinated series
of upgrades on all nodes in the ring or protection group. You can perform in-service span upgrades for
the following ONS 15454 cards:
• Single-port OC-12 to four-port OC-12
• Single-port OC-12 to OC-48
• Single-port OC-12 to OC-192
• Single-port OC-12 to MRC-12
• OC-48 to OC-192
• OC-48 to OC192SR1/STM64IO Short Reach or OC192/STM64 Any Reach
You can also perform in-service card upgrades for the following ONS 15454 cards:
• Four-port OC-3 to eight-port OC-3
• Single-port OC-12 to four-port OC-12
• Single-port OC-12 to OC-48
• Single-port OC-12 to OC-192
• Single-port OC-12 to MRC-12
• OC-48 to MRC-12
• OC-192 to OC192-XFP
Redundant
OC-N Bus
OC-N Feed
Redundant
OC-N Bus
Redundant
OC-N Bus
Up to 72 DS-3s, 84 DS-1s
Up to 72 DS-3s, 84 DS-1s
ONS 15454, Node 1
ONS 15454, Node 2
ONS 15454, Node 3
ONS 15454, Node 4
Redundant
Up to 72 DS-3s, 84 DS-1s
Up to 96 DS-3s, 112 DS-1s
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