Overview Of Synce In Satellite Nv System - Cisco ASR 9000 Series System Configuration Manual

Configuring the Satellite Network Virtualization (nV) System
3 Configure the satellite nV system through CLI or XML on the host 10GigE ports. Configure the host for
nV operations as described in the sections
Address, and
4 Power up the chassis of the satellite device.
For power supply considerations of ASR 9000v, ASR 901, and ASR 903, refer to the Appendix C, Cisco
Note
ASR 9000 and Cisco CRS Satellite Systems (ASR 9000v, ASR 903, ASR 901) of the Cisco ASR 9000 Series
Aggregation Services Router Hardware Installation Guide online.
5 You can check the status of the satellite chassis based on these chassis error LEDs on the front face plate.
Note When the satellite software requires an upgrade, it notifies the host. You can do an inband software upgrade
from the host, if needed. Use the show nv satellite status on the host to check the status of the satellite.
Note For the satellite image upgrade to work, you must ensure that the management-plane CLI is not configured
on the Cisco ASR 9000 Series Router. If it is configured, then you need to add this exception for each of
the 10GigE interfaces, which are the satellite ICLs.

Overview of SyncE in Satellite nV System

Cisco IOS XR Software Release 5.2.0 supports Synchronous Ethernet (SyncE), a physical layer frequency
protocol used to provide frequency synchronization in an nV satellite system both from the host to the satellites,
and from the satellites to downstream devices.
As Synchronous Ethernet operates at the physical layer, any satellite that tries to synchronize to the host must
be directly connected to the host or directly connected to another satellite that is connected to the host or
connected through an access network that is transparent to SyncE or is configured to propagate the SyncE
information. Only single-hop hub-and-spoke satellite topologies are addressed, with either single or dual host.
SyncE can be configured on hosts and the host's fabric interfaces and satellite-specific configuration is not
required. SyncE is disabled on the satellite until Ethernet Synchronization Messaging Channel (ESMC)
messages are received from the host; when an ESMC message is received, the satellite enables SyncE on
fabric and access ports.
Configuring the Inter-Chassis Links and IP
• If the Critical Error LED turns ON, then it indicates a serious hardware failure.
• If the Major Error LED turns ON, then it indicates that the hardware is functioning well but unable
to connect to the host.
• If the Critical and Major LEDs are OFF, then the satellite device is up and running and connected
to the host.
• You can do satellite ethernet port packet loopback tests through the host, if needed, to check end to
end data path.
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
Overview of SyncE in Satellite nV System
Defining the Satellite nV System,Configuring the Host IP
Connectivity.
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