Cisco Cisco ONS 15310-MA SONET Multiservice Platform Referencia técnica
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Note
The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature.
These terms do not refer to using Cisco ONS 15xxx products in a unidirectional path switched
ring configuration. Rather, these terms, as well as "Path Protected Mesh Network" and
"PPMN," refer generally to Cisco's path protection feature, which may be used in any
topological network configuration. Cisco does not recommend using its path protection
feature in any particular topological network configuration.
These terms do not refer to using Cisco ONS 15xxx products in a unidirectional path switched
ring configuration. Rather, these terms, as well as "Path Protected Mesh Network" and
"PPMN," refer generally to Cisco's path protection feature, which may be used in any
topological network configuration. Cisco does not recommend using its path protection
feature in any particular topological network configuration.
What is TL1?
Transaction Language 1 (TL1) is a set of ASCII (American Standard Code for Information
Interchange)-based instructions, or messages, that an operations support system (OSS) uses to manage
a network element (NE) and its resources. TL1 provides a standard set of messages that can be used
for communicating between operating systems and NEs, and personnel and NEs.
Interchange)-based instructions, or messages, that an operations support system (OSS) uses to manage
a network element (NE) and its resources. TL1 provides a standard set of messages that can be used
for communicating between operating systems and NEs, and personnel and NEs.
TL1 Message Types and Examples
There are two main types of standards-defined TL1 messages: command/responses and autonomous
messages.
messages.
1.
Command/Responses—These are initiated by a user and provide two parts: a request to the NE
to set or get information, and a response from the NE containing completion or status codes and
requested information. Request, or input messages are used to issue the request portions of
command messages to the NE. Command messages are often referred to as command/response
messages, where the request portion is an input message (OSS to NE) and the response portion is
an output message (NE to OSS). Command/Responses can be further classified as follows:
to set or get information, and a response from the NE containing completion or status codes and
requested information. Request, or input messages are used to issue the request portions of
command messages to the NE. Command messages are often referred to as command/response
messages, where the request portion is an input message (OSS to NE) and the response portion is
an output message (NE to OSS). Command/Responses can be further classified as follows:
a.
Set information—The simplest type of messages are those that set information or instruct the
NE to perform an action and return only a result with no data in the response:
NE to perform an action and return only a result with no data in the response: