Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - PHYSICAL LAYER CONFIGURATION GUIDE 2010-09-24 Configuration Manual page 105

clock source
controller sonet
description
Copyright © 2010, Juniper Networks, Inc.
(MPLS fast reroute over SONET/SDH interfaces) Specify the time that the router
10.
waits to set an alarm when the router records a defect at the line or section layer.
Shut down (disable) an interface.
11.
Use to configure the transmit clock source for the interface.
In most cases, accept the default option, line. This setting allows the interface to derive
the transmit clock from the received clock. In certain circumstances, it might be
appropriate to generate a clock from one of the internal sources (options module or
chassis).
Specify the keyword line to use a transmit clock on the line's receive data stream.
Specify the keywords internal module to use the line module's internal clock.
Specify the keywords internal chassis to use the router's clock.
On a cOC3/STM1 I/O module, you can configure some ports with internal clock sources
and others with line clock sources. However, all ports with internal clock sources must
use either the router's clock or the module's clock. You cannot configure some ports
on the I/O module to use the router's clock and others to use the module's clock.
To change the clock source of the ports on a cOC3/STM1 I/O module from the router's
clock to the module's clock or vice versa, change the clock source of all ports firstly to
the line setting, and then to the new internal clock setting.
Example
host1(config-controll)#clock source internal module
Use the no version to revert to the default, line.
See clock source.
Use to select an interface on which you want to configure SONET or SDH.
Use the interface specifier in slot/port:path-channel format (ERX14xx models, ERX7xx
models, and the ERX310 Broadband Services Router ) or slot/adapter/port format
(E120 and E320 routers). The E120 and E320 routers do not support path channelization,
and therefore does not support the path-channel specifier.
Example 1—Selects a SONET interface on ERX14xx models, ERX7xx models, or the
ERX310 router
host1(config)#controller sonet 4/0
Example 2—Selects an SONET interface on the E320 router
host1(config)#controller sonet 3/0/0
There is no no version.
See controller sonet.
Chapter 3: Configuring Unchannelized OCx/STMx Interfaces
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