Information About Ipodwdm; How To Configure Dwdm Controllers - Cisco 6000 Series Configuration Manual

Information about IPoDWDM

To enable multiservice transport, OTN uses the concept of a wrapped overhead (OH). To illustrate this
structure:
• Optical channel payload unit (OPU) OH information is added to the information payload to form the
• Optical channel (OCh) OH is added to form the OCh. The OCh provides the OTN management
Figure 2: OTN Optical Channel Structure
These are the conditions for OTU Port configuration:
• OTU4 can be configured at slice level only.
• Slice reset occurs immediately after commit.
• Interface is removed from the slice.
• Slice is powered back up in OTU4 mode.
• Two 100 GigE interfaces are created.
Information about IPoDWDM
Cisco IOS XR software includes the IP over Dense Wavelength Division Multiplexing (IPoDWDM) feature.
IPoDWDM currently provides the following software features:
• Shared Risk Link Group (SRLG)
Shared Risk Link Group (SRLG)
The Shared Risk Link Group (SRLG) provides shared risk information between the DWDM optical layer
(L0) and the router layer (L3), and the applications that use the shared risk information. An SRLG is a set of
links that share a resource whose failure may affect all links in the set.
System administrators can configure the following IPoDWDM features:
Signal Logging
DWDM statistic data, such as EC, UC and alarms, are collected and stored in the log file on the DWDM line
card.

How to Configure DWDM Controllers

The DWDM controllers are configured in the physical layer control element of the Cisco IOS XR software
configuration space. This configuration is done using the controller dwdm command, and is described in the
following task:
Interface and Hardware Component Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
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OPU. The OPU OH includes information to support the adaptation of client signals.
functionality and contains four subparts: the OPU, and frame alignment signal (FAS).
Configuring Dense Wavelength Division Multiplexing Controllers