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8-5
Cisco ONS 15600 Reference Manual, R7.0
Chapter 8 SONET Topologies and Upgrades
8.3.2 Four-Fiber BLSRs
Figure 8-4
Four-Node, Two-Fiber BLSR Traffic Pattern Following Line Break
8.3.2 Four-Fiber BLSRs
Four-fiber BLSRs double the bandwidth of two-fiber BLSRs. Because they allow span switching as well
as ring switching, four-fiber BLSRs increase the reliability and flexibility of traffic protection. Two
fibers are allocated for working traffic and two fibers for protection, as shown in
. To
implement a four-fiber BLSR, you can install either two or four OC-48 or OC-192 cards at each BLSR
node.
Node 0
Node 1
Node 2
Node 3
OC-48 Ring
96673
Traffic flow
Fiber 1
Fiber 2
Содержание ONS 15600 Series
Страница 27: ...xxvii Cisco ONS 15600 Reference Manual R7 0 About this Manual ...
Страница 29: ...xxix Cisco ONS 15600 Reference Manual R7 0 About this Manual ...
Страница 52: ...1 22 Cisco ONS 15600 Reference Manual R7 0 Chapter 1 Shelf and Backplane Hardware 1 11 5 Card Replacement ...
Страница 80: ...2 28 Cisco ONS 15600 Reference Manual R7 0 Chapter 2 Card Reference 2 9 Filler Card ...
Страница 110: ...5 10 Cisco ONS 15600 Reference Manual R7 0 Chapter 5 Security 5 4 2 Shared Secrets ...
Страница 142: ...7 28 Cisco ONS 15600 Reference Manual R7 0 Chapter 7 Circuits and Tunnels 7 16 Server Trails ...
Страница 270: ...13 16 Cisco ONS 15600 Reference Manual R7 0 Chapter 13 SNMP 13 8 5 History Control RMON Group ...