User manual JUNIPER NETWORKS JUNOSE 11.2.X PHYSICAL LAYER CONFIGURATION

[. . . ] JunosETM Software for E SeriesTM Broadband Services Routers Physical Layer Configuration Guide Release 11. 2. x Published: 2010-06-17 Copyright © 2010, Juniper Networks, Inc. Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www. juniper. net Juniper Networks, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners. [. . . ] clock source · · Use to configure the transmit clock source for the interface. For production networks, configure all STMx ports on the line module for internal chassis timing. You must also ensure that the chassis reference clock is of good quality Copyright © 2010, Juniper Networks, Inc. 115 JunosE 11. 2. x Physical Layer Configuration Guide -- Stratum 3 or better, recovered either from a known good STM port or from one of the BITS inputs. · Although the CLI enables you to specify the keywords internal module to use the line module's internal clock, in a production network we recommend that you do not do this. Instead, specify the keywords internal chassis to use the router's internal clock. For production networks, never specify the keyword line to use the line's receive clock as the transmit clock. Although the CLI enables this configuration, it is not supported because jitter transfer is not compliant for this timing and because pointer adjustments takes place on the outgoing link. In a nonproduction network, 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, first change the clock source of all ports to the line setting, and then to the new internal clock setting. Example host1(config-controll)#clock source internal chassis · · · · · · Use the no version to revert to the default, line. See clock source. controller sonet · · Use to select an interface on which you want to configure channelized SONET or SDH. Example host1(config)#controller sonet 4/0 · · There is no no version. See controller sonet. description · · Use to assign a text description or an alias to a channelized SONET interface. You can use this command to help you identify the interface and keep track of interface connections. Use the show controllers sonet command to display the text description. Example host1(config-controll)#description boston-sonet-interface · · · · · Use the no version to remove the text description or alias. See description. path 116 Copyright © 2010, Juniper Networks, Inc. Chapter 4: Configuring Channelized OCx/STMx Interfaces · · Use to configure paths over channelized SONET and SDH interfaces. See Interface Types and Specifiers in JunosE Command Reference Guide for details of the syntax. Example for a cOC3/STM1 interface host1(config-controller)#path 2 oc1 · · Example for a cOC12/STM4 interface in SONET mode host1(config-controller)#path 2 oc1 1/2 · Example for a cOC12/STM4 interface in SDH mode host1(config-controller)#path 2 stm1 2 · · Use the no version to delete a SONET or SDH path. See path. path description · · Use to assign a text description or an alias to a channelized SONET path. You can use this command to help you identify the interface and keep track of interface connections. [. . . ] Use the no version to reduce the number of provisioned tunnel-service interfaces to zero. See tunnel-server. · · Monitoring Tunnel-Service Interfaces You can monitor tunnel-service interfaces by using the show tunnel-server command. NOTE: The E120 and E320 Broadband Services routers output for monitor and show commands is identical to output from other E Series routers, except that the E120 and E320 router output also includes information about the adapter identifier in the interface specifier (slot/adapter/port). show tunnel-server · Use to display status and configuration information for dedicated and shared tunnel-server ports and tunnel-service interfaces configured on the router. You can display information for a specific tunnel-server port or for all tunnel-server ports. · Copyright © 2010, Juniper Networks, Inc. 221 JunosE 11. 2. x Physical Layer Configuration Guide · Use the optional config keyword to display information about available and provisioned tunnel-service interfaces on each port, and to indicate whether modules that support the use of dedicated or shared tunnel-server ports are currently installed in the router. Field descriptions · · Port:Appl--Identifier in slot/port or slot/adapter/port format for the module or tunneling application · · slot--Number of the slot in the chassis where the module resides adapter--Number of the bay in which the I/O adapter (IOA) resides. [. . . ]