Cisco ASR 9000 Series System Configuration Guide

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The host is configured to derive a frequency signal from the external clock source and to provide frequency
synchronization to the satellites using the host's fabric interfaces.
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No satellite based configuration is required. The user must configure the frequency synchronization
feature considering the host as a standalone or non-nV device. The user must configure SyncE on the
fabric interfaces using the existing Frequency Synchronization configuration.
In dual host system, the Frequency Synchronization configuration on both the hosts
must be identical to ensure consistency if one of the hosts fail.
Note
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After receiving the valid SyncE signal and the Quality Level (QL) that the associated Ethernet
Synchronization Message Channel Synchronization Status Messages (ESMC SSMs) over one or more
of its fabric links, the satellite selects one of the fabric links to synchronize to, and uses this timing stream
to drive SyncE output on its access interfaces.
There is no configuration that controls the behavior of the satellite device and
synchronization is enabled automatically on both its fabric interfaces and access interfaces
after SyncE information is received.
Note
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You can configure any downstream device to synchronize with this SyncE signal.
Basic Configuration:
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Configuration of Frequency Synchronization on the host(s) includes:
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Configuring external clock source as frequency input.
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Configuring fabric interfaces as SyncE outputs, with ESMC output.
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SyncE is disabled by default. It will be automatically enabled on the satellite after ESMC packet is
received.
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Frequency Synchronization show commands on the host to verify the state of the satellite. The show
frequency synchronization interfaces command is extended to show satellite access port information.
Configuration Examples of SyncE on ASR9000 Hosts
Dual-home Satellite Configuration:
The following are configuration examples for the dual-home satellite configuration.
Configuring the ASR 9000v as a satellite in Host A:
nv
satellite 100
type asr9000v
ipv4 address 100.0.0.3
description sat100
serial-number CAT1708U0NA
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Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
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Configuring the Satellite Network Virtualization (nV) System
Configuration Examples of SyncE on ASR9000 Hosts

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English