- Copyright and Trademark Information
- Table of Contents
- play_arrow Overview
- play_arrow Overview of CTP Bundles
- play_arrow Configuring CTP Bundles
- Adding a Bundle (CTPView)
- Adding a Bundle (CTP Menu)
- Configuring IP Parameters for CTP Bundles (CTPView)
- Configuring IP Parameters for CTP Bundles (CTP Menu)
- Configuring Circuit Startup Parameters for CTP Bundles (CTPView)
- Configuring Circuit Startup Parameters for CTP Bundles (CTP Menu)
- Configuring the CTP Bundle Data Packet Protocol and OAM Port (CTP Menu)
- play_arrow Ethernet Media Configuration Overview
- Displaying Ethernet Media Information (CTP Menu)
- Configuring Ethernet Media (CTP Menu)
- Configuring the Direction of the Circuit (CTPView)
- Configuring the Direction of the Circuit (CTP Menu)
- Configuring Virtual IP Parameters for CTP Bundles (CTPView)
- Configuring Virtual IP Parameters for CTP Bundles (CTP Menu)
- Configuring the Missing Packet Fill Pattern for CTP Bundles (CTPView)
- Configuring the Missing Packet Fill Pattern for CTP Bundles (CTP Menu)
- Configuring Signaling for CTP Bundles (CTPView)
- Configuring Signaling for CTP Bundles (CTP Menu)
- Configuring Serial Port Parameters for CTP Bundles (CTPView)
- Configuring Serial Port Parameters for CTP Bundles (CTP Menu)
- Configuring Transparent Encoding for CTP Bundles (CTPView)
- Configuring Transparent Encoding for CTP Bundles (CTP Menu)
- Configuring T1 and E1 Port Parameters for CTP Bundles (CTPView)
- Configuring T1 and E1 Port Parameters for CTP Bundles (CTP Menu)
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- Configuring Multiservice Audio Mode Port Parameters for CTP Bundles (CTPView)
- Configuring Multiservice IRIG-B Mode Port Parameters for CTP Bundles (CTPView)
- Configuring Multiservice TDC Mode Parameters for CTP Bundles (CTPView)
- Configuring Multiservice 4WTO Mode Port Parameters for CTP Bundles (CTPView)
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- Configuring Multiservice Audio Mode Port Parameters for CTP Bundles (CTP Menu)
- Configuring Multiservice IRIG-B Mode Port Parameters for CTP Bundles (CTP Menu)
- Configuring Multiservice TDC Mode Parameters for CTP Bundles (CTP Menu)
- Configuring Multiservice 4WTO Mode Port Parameters for CTP Bundles (CTP Menu)
- Configuring 4WTO Port Parameters for CTP Bundles (CTPView)
- Configuring 4WTO Port Parameters for CTP Bundles (CTP Menu)
- Configuring IRIG-B Port Parameters for CTP Bundles (CTPView)
- Configuring IRIG-B Port Parameters for CTP Bundles (CTP Menu)
- Configuring Advanced Port Options for CTP Bundles (CTPView)
- Configuring Advanced Port Options for CTP Bundles (CTP Menu)
- Configuring Port Mirroring for CTP Bundles (CTPView)
- Configuring Port Mirroring for CTP Bundles (CTP Menu)
- Configuring Cryptographic Resynchronization (Crypto Resync)
- Gathering Node Debugging Information (CTP Menu)
- Selecting the Type of Clocking on Serial Ports for CTP Bundles (CTPView)
- Selecting the Type of Clocking on Serial Ports for CTP Bundles (CTP Menu)
- Configuring Custom Clocking for CTP Bundles (CTPView)
- Configuring Custom Clocking for CTP Bundles (CTP Menu)
- Configuring Adaptive Clocking for CTP Bundles (CTPView)
- Configuring Adaptive Clocking for CTP Bundles (CTP Menu)
- play_arrow Network Node Reference Overview
- Configuring NetRef for Adaptive Bundle Operation
- Configuring NetRef for Primary or Backup Operation
- Support for Multiple Master Nodes to Associate With a Single Slave Node in NetRef
- Configuring NetRef Multiple Master Nodes (CTP Menu)
- Configuring NetRef Settings (CTPView)
- Guidelines for Configuring LOS Detection
- Configuring LOS Detection on CTP and SAToP Bundles (CTP Menu)
- play_arrow Administration
- play_arrow Querying CTP Bundles
- play_arrow Diagnostic Testing for CTP Bundles Overview
Configuring LOS Detection on CTP and SAToP Bundles (CTP Menu)
Starting with CTPOS Release 7.2R1, CTP devices support the detection of a loss of signal, which denotes a physical link problem. The following conditions are supported:
In a serial both-ended Y-cable redundancy configuration (hardware-based redundancy or software-based Y cable link protocol), removal of Y cable leg from the CTP port of the online bundle must be able to force a switch to the standby bundle.
In a T1/E1 both-ended Y cable configuration (hardware-based redundancy or software-based Y cable link protocol), removal of Y cable leg from the CTP port of the online bundle must be able to force a switch to the standby bundle.
A CTP series device provides two types of Y-cable redundancy.
Redundancy by using a hardware link that uses a special Y cable
Redundancy by using a software link that does not depend on a signaling hardware like the Y cable
The CTP devices support a both-ended redundancy mechanism, in which two identical CTP circuit bundles are combined using Y cables at each end, enabling one bundle to act as a backup for the other. One of the bundles is in use (online), while the other is in the standby state (offline). Only the online bundle is allowed to drive the Y cable towards the user equipment, while the offline bundle is tristate. A communications channel (such as redundancy by using a hardware link that uses a special Y cable or redundancy based on a software link that does not depend on a signaling hardware like the Y cable) between ports at each end determines which of the two ports on the Y cable is currently online. When one bundle fails, the failed bundle transitions to the offline and places the other bundle in the online state.
Before you begin:
Disable the bundle before you modify the bundle options.
To configure the capability to detect LOS alarms in a Y-cable redundancy configuration for CTP and SAToP bundles by using the CTP Menu:
- From the Main Menu, select 1) Bundle Operations.
- Select 1) CTP.
- Select a bundle from the list.
If you select an active bundle, you are prompted to disable the bundle before configuring it.
- Select 3) Port Config.
- Select 4) Advanced Options to configure advanced attributed for the CTP bundle.
- Select 20) LOS checking (T1E1 only) to configure the functionality to detect LOS for the T1E! interfaces in a CTP bundle or SAToP bundle.
- Follow the onscreen instructions and configure the options as described Table 54.
Table 54: LOS Settings in the CTP Menu
Field | Function | Your Action |
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Check LOS on T1/E1 ports for CTP/SAToP bundles? y[n] | Specifies that the capability to identify LOS alarms on T1E1 interfaces in SAToP or CTP bundles needs to be enabled. A loss of signal (LOS) alarm indicates that there is a physical link problem with the connection to the router receive port from the neighboring SONET equipment transmit port. An LOS alarm occurs when the port on the card is in service but no signal is being received. The cabling is not correctly connected to the ports, or no signal exists on the line. Possible causes for a loss of signal include upstream equipment failure or a fiber cut. | Enter y or n to enable or disable the LOS detection capability. Note: Although this menu option to enable or disable the LOS detection functionality is shown regardless of the port type, such as serial interfaces or T1E1 interfaces, this setting becomes effective on a T1/E1 port only when it is connected to a CTP or SAToP bundle. If the LOS detection functionality is enabled on a serial port or other bundle types, the setting is not processed. |