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Juniper Unified PON Architecture Overview

Juniper Unified PON integrates a 10GbE OLT SFP+ transceiver, a PON controller, and a PON manager to provide a complete network management solution. With this solution, you can provision and monitor the 10GbE OLT SFP+ transceiver devices, as well as the third-party optical network units (ONUs) compliant with the 10GbE Gigabit PON (GPON) and Ethernet PON (EPON) standards.

Benefits of Integrating Juniper Unified PON with the 10GbE OLT SFP+ Transceiver

  • The router-integrated OLT solution reduces the cost of deployment.
  • The OLT solution creates an open standards-based system without vendor lock-in to ONUs as opposed to earlier PON systems. This solution provides deployment flexibility.
  • The OLT solution enables easy installation and upgrades and creates a single point of management.
  • The OLT modules can be used to create higher density or more flexible integrated solutions.

Juniper Unified PON Architecture

This section describes the various components of the Juniper Unified PON architecture.

10GbE OLT SFP+ Transceiver

The 10GbE OLT SFP+ transceiver connects to the 10GbE ports on the ACX5400 line of routers, instantaneously enabling 10GbE symmetrical PON access on the router. The transceiver eliminates the need for additional hardware as the router functions as the OLT, substantially lowering the cost of deployment. A single OLT supports up to 128 ONU devices providing improved database bandwidth assignment and latency performance over traditional chassis-based architectures. The OLT solution addresses the PON physical layer, mandatory access control (MAC), and state-polling functionality at the network edge. Behind the OLT, the network normally contains Ethernet switches for aggregation and a router to the Internet. To install the 10GbE OLT SFP+ transceiver on the ACX5400 line of routers, see Replace an Optical Line Terminal Transceiver.

PON Controller

PON controller is a stateless management controller and a device driver application for configuring and monitoring the end points in a PON solution network. The PON controller runs at a certain configurable interval. The database in the PON manager serves as the northbound API for the PON controller. The PON controller applies configurations to the OLT and the ONU devices from documents stored in the database. At each polling cycle, the PON controller also collects state information, statistics, and logs from devices and reports the information to higher layer applications through the PON manager database. The PON manager and the NETCONF interface manage the PON controller through the database.

PON Manager

The PON manager is a web application that provides a GUI for provisioning and managing the PON network. The PON manager enables you to do the following tasks:

  • Manage alarms.
  • Provide a dashboard view summary of PON network conditions.
  • Monitor devices and their statistics.
  • Provision and manage devices.
  • Diagnose and troubleshoot errors through logs.
  • PON Controller database management.
  • PON manager user management.
  • Configure services including VLANs, service-level agreements (SLAs), 802.1X authentication, and DHCP relay.

The PON manager is responsible for configuring the OLTs and ONUs, and also to download firmwares to the OLTs and ONUs. For more information on PON manager (WebUI) and database, see MicroClimate™ Management System [MCMS] PON Manager (WebUI) User Guide.

Database

The database provides a datastore for the PON network management system. The database contains all the configurations, states, statistics, alarms, and log data for the devices in the PON network. Northbound interfaces such as the PON manager, NETCONF Server, and applications interface with the database to provision and to retrieve monitoring information for devices in the PON network. The database serves as the interface between the PON manager, NETCONF, and the PON controller. The PON Controller reads the configuration information from the database and then programs the OLT and ONU devices accordingly.

The PON Controller periodically collects state information from devices in the PON network and updates the monitoring data to the database. The PON manager reads the monitoring data from the database and displays it in the web application.

NETCONF Server

The NETCONF Server provides a standard NETCONF interface and APIs for managing the PON network. The NETCONF Server interfaces with the database. The NETCONF solution supports standard Broadband Forum (BBF) TR-383 and TR-385 YANG models for configuring subscriber services for the PON network. In addition to standard YANG models, YANG models provide a complete NETCONF management solution for PON Controllers, OLTs, and ONUs. For more information on NETCONF Server, see MicroClimate™ Management System [MCMS] Netconf Server Interface User Guide.