Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 10 Configuring the Ethernet SPAs
Using show Commands to Check SFP Module and XFP Module Status
Configuring the Network Clock for the 2-Port Gigabit Synchronous Ethernet
SPA on a Cisco ASR 1000 Series Router
The 2-Port Gigabit Synchronous Ethernet SPA supports time, phase, and frequency awareness through
Ethernet networks. The 2-Port Gigabit Synchronous Ethernet SPA on the Cisco SIP-40 enables clock
selection and translation between the various clock frequencies. If the 2-Port Gigabit Synchronous
Ethernet SPA interoperates with devices that do not support synchronization, synchronization features
can be disabled or partially enabled to maintain backward compatibility.
Note For additional details to understand how SyncE feature is implemented on Cisco ASR 1000 Series
Router using 4 different configuration, please refer the chapter ‘Synchronous Ethernet Support On Cisco
ASR 1000 Series Routers’ in the Cisco ASR 1000 Series Software Configuration Guide.
The network clock can be configured in global configuration mode and interface configuration mode:
• Configuring the Network Clock in Global Configuration Mode, page 10-19
• Configuring the Network Clock in Interface Configuration Mode, page 10-23
Configuring the Network Clock in Global Configuration Mode
Use the following commands to configure the network clock in global configuration mode on the Cisco
SIP-40:
Command Purpose
Router(config)# [no] network-clock
synchronization automatic
Enables G.781 based automatic clock selection process.
G.781 is the ITU-T Recommendation that specifies the
synchronization layer functions.
Router(config)# [no] network-clock eec {1 |
2}
Example
Router(config)# network-clock eec 1
Configures the clocking system hardware with the
desired parameters. These are the options:
• For option 1, the default value is EEC-Option 1
(2048).
• For option 2, the default value is EEC-Option 2
(1544).

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English