No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of POS Interfaces

Overview of POS Interfaces

A POS interface uses SONET/SDH as the physical-layer protocol and provides a high-speed, reliable, and P2P IP data transfer.

Introduction to POS

Figure 14-1  Typical POS application diagram

A POS interface uses SONET/SDH to transfer IP data in MAN and WAN. The POS uses the link-layer protocol (FR, PPP and HDLC) to encapsulate IP packets, uses the service adapter at the SONET/SDH channel layer to map the packets to the payload of SONET/SDH signals, then uses the SONET/SDH transport layer and section layer to add a path overhead and segment overhead and encapsulate the payload in a SONET/SDH frame, and finally transmits it on the optical network.

The device provides POS interfaces with two rates and their signal level are OC-3/STM-1 (155 Mbit/s) and OC-12/STM-4 (622 Mbit/s).

SONET and SDH Overview

Synchronous optical network (SONET) is a standard defined by ANSI and is mainly used in North America and Japan. All clocks in the entire network come from a main clock. SONET defines a rate hierarchy for optical transmission devices. It transmits data at a base rate of 51.84 Mbit/s.
  • In electrical signal, the base rate is called level-1 Synchronous Transport Signal (STS-1).
  • In optical signal, the base rate is called level-1 Optical Carrier (OC-1).

ITU-T, based on SONET, develops a worldwide standard synchronous digital hierarchy (SDH), which is mainly used in Europe.

The basic rate of SDH is 155.52 Mbit/s, which is called STM-1. This rate equals the OC-3 rate in SONET.

Translation
Download
Updated: 2019-03-06

Document ID: EDOC1100069331

Views: 22961

Downloads: 129

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next