Overview of the Satellite nV Optical Shelf System
The Satellite Network Virtualization (nV) optical shelf system is a software feature that enables an optical
interface shelf to be managed from a separate Cisco IOS XR host. The optical interface shelf is treated as a
satellite device of the IOS XR host. For example, consider the following nV satellite system topology. Cisco
ASR 9000 Series Aggregation Services Router is a IOS XR host. An external Optical Network System (ONS)
such as Cisco 15454 M6 Multiservice Transport Platform (MSTP) is treated as a satellite device appearing
as an optical shelf within the host router (Cisco ASR 9000 Series Aggregation Services Router). This satellite
device is managed from the host (IOS XR) using the nV optical shelf system.
The host could also be a Cisco CRS Router (or other Cisco IOS XR platforms) and the shelf could also be an
M2 router (or other transport platforms).
nV Optical Applications
The nV optical shelf system supports two optical applications, transponder and muxponder, depending on the
number of links (short range grey optics) connected from the host to the satellite optical shelf.
Transponder Application
In a transponder application, the host (Cisco ASR 9000 Series Aggregation Services Router) connects to the
shelf (Cisco ONS 15454 M6) over a single short range grey optical connection. The shelf converts (transponds)
the signal into a long range dense wavelength-division multiplexing (DWDM) signal. The following diagram
shows a sample topology of the transponder application:
The management of the shelf from the host occurs through an out of band connection. The topology also
identifies the following three separate ports:
•
Router port on the host router (also referred to as the local port)
•
Client port on the shelf that receives the client signal to be transponded
•
Trunk port on the shelf that sends and receives the transponded DWDM signal
Muxponder Application
Instead of a single high-capacity short range link between the host (Cisco ASR 9000 Series Aggregation
Services Router) and the shelf (Cisco ONS 15454 M6), the host in a muxponder application connects to the
shelf over a number of smaller-capacity single short range grey optical connections. The shelf combines them
into a single DWDM link using Optical Transport Network (OTN) technology. It can be cost effective to use
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
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Configuring the Satellite nV Optical Shelf System
Overview of the Satellite nV Optical Shelf System
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