Specifications

3-3

Cisco ONS 15530 Planning Guide

OL-7708-01

Chapter 3 Shelf Configuration Rules

Shelf Rules for 10-Gbps ITU Trunk Cards

The rules for 10-Gbps ITU trunk cards are as follows:

• The 10-Gbps ITU trunk cards must support channels in the same channel band supported by the

OADM module.

• Two OADM modules are required when configuring splitter protection.

Shelf Rules for 10-Gbps ITU Tunable Trunk Cards

The rules for 10-Gbps ITU tunable trunk cards are as follows:

• The 10-Gbps ITU trunk cards must support channels in the same channel band supported by the

OADM module.

• Two OADM modules are required when configuring splitter protection.

Shelf Rules for 10-Gbps Uplink Cards

The rules for 10-Gbps uplink cards are as follows:

• The 10-Gbps uplink cards must connect to 10-Gbps uplink cards on another Cisco ONS 15530, or

to a 10-GE client module on a Cisco ONS 15540 ESP or Cisco ONS 15540 ESPx.

• If the Cisco ONS 15530 shelf has 10-Gbps uplink cards and no 2.5-Gbps transponder line cards,

2.5-Gbps ITU trunk cards, or 10-Gbps ITU trunk cards, no OADM modules or OSC modules are

required.

Shelf Rules for OSC Modules

The rules for OSC modules are as follows:

• For unprotected and trunk fiber protected configurations, use one OSC module and one OADM

module with OSC support.

• For splitter and line card protected configurations, use two OSC modules and two OADM modules

with OSC support.

General Rules for Ring Topologies

The following network rules apply to ring topologies:

• A channel must be present on only two nodes in the ring when using splitter protection.

• All channels added by a node on an east OADM module must be dropped on a west OADM module

of one or more other nodes on the ring. All channels added by a node on a west OADM module must

be dropped by an east OADM module of one or more other nodes on the ring. This rule may be

violated during migration.

• A node cannot add a channel that is already present in the same direction until it has dropped that

channel.