Meshed Rings - Cisco ONS 15454 DWDM Installation And Operation Manual

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18.2.4 Meshed Rings

18.2.4 Meshed Rings

The meshed ring topology

nodes are present. Protected traffic can be provisioned between any two nodes; however, the selected

channel cannot be reused in the ring. Unprotected multihop traffic can be provisioned in the ring. A

meshed ring must be designed to prevent amplified spontaneous emission (ASE) lasing. This is done by

configuring a particular node as an anti-ASE node. An anti-ASE node can be created in two ways:

For more information about OADM nodes, see the

more information about anti-ASE nodes, see the

Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0

Any-to-Any Ring

Equip an OADM node with 32MUX-O cards and 32DMX-O cards. This solution is adopted when

the total number of wavelengths deployed in the ring is higher than ten. OADM nodes equipped with

32MUX-O cards and 32DMX-O cards are called full OADM nodes.

When the total number of wavelengths deployed in the ring is lower than ten, the anti-ASE node is

configured by using an OADM node where all the channels that are not terminated in the node are

configured as "optical pass-through." In other words, no channels in the anti-ASE node can travel

through the express path of the OADM node.

18-4) does not use hubbed nodes; only amplified and passive OADM

"17.1.3 OADM Node" section on page

"17.1.5 Anti-ASE Node" section on page

Network Reference

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