Sonet T3 Configuration Parameters; Sonet Vt Configuration Parameters; Sonet Protection Switching - Cisco ASR 900 Series Configuration Manual

Configuring SONET
• Description — Specifies the description of the controller.
• Framing — Specifies the type of a framing on T1 interface.
• Loopback — Sets the T1 interface in the loopback mode.
• Shutdown — Disables the T1 interface.

SONET T3 Configuration Parameters

The following parameters affect SONET T3 configuration:
• Clock — Specifies the clock source for T3 link.
• Description — Specifies the description of the controller.
• Framing — Specifies the type of a framing on T3 interface.
• Loopback — Sets the T3 link in the loopback mode.
• Shutdown — Disables the T3 interface.

SONET VT Configuration Parameters

The following parameters affect SONET VT configuration:
• BERT — Starts the BERT test.
• Clock — Specifies the clock source for VT.
• Description — Specifies the description of the controller.
• Loopback — Sets the VT in the loopback mode.
• Overhead — Configures VT line path overhead flags.
• Shutdown — Disables the VT interface.
• Threshold — Configures the VT threshold values.

SONET Protection Switching

Automatic protection switching (APS) is a protection mechanism for SONET networks that enables SONET
connections to switch to another SONET circuit when a circuit failure occurs. A protection interface serves
as the backup interface for the working interface. When the working interface fails, the protection interface
quickly assumes its traffic load.
The SONET protection schemes comply with GR-253 and ITU-T G.783. It allows Optical Interface Module
to work seamlessly as SONET Add or Drop Multiplexers (ADMs). The implementation of the above protection
schemes allows a pair of SONET lines or paths to be configured for line or path redundancy. In the event of
CEM Group — Specifies the time slots for CEM group mapping.
1 port OC48/ 4 port OC12/OC3 + 12 port T1/E1 + 4 port T3/E3 CEM Interface Module Configuration Guide, Cisco IOS

SONET T3 Configuration Parameters

XE Fuji 16.7.x (Cisco ASR 900 Series)
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