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Table Of Contents
Cisco ONS 15305 Multiservice
Aggregation for Metro AccessTechnical Specifications—Cisco ONS 15305 R1.1.0
Data Sheet
Cisco ONS 15305 Multiservice
Aggregation for Metro Access
The Cisco® ONS 15305 Multiservice Access Platform provides Ethernet and TDM aggregation for end offices and small central offices. This product also features a small form factor (one rack unit or 1RU) that gives service providers the option to install it at the customer premises to collect end-user traffic. Together with the Cisco ONS 15302 and the Cisco ONS 15454 platforms, the Cisco ONS 15305 provides an end-to-end solution for multiservice transport over SDH networks.
Figure 1
Cisco ONS 15305 Multiservice Access Platform
Product Overview
The Cisco ONS 15305 Multiservice Access Platform transports Ethernet and TDM traffic inside an SDH frame for metropolitan-area network (MAN or metro) applications. The Cisco ONS 15305 can be used as a central office aggregator; consolidating STM-1 access links from Cisco ONS 15302 customer premises equipment (CPE) as well as directly connected customer TDM or data traffic from electrical interfaces. The Cisco ONS 15305 can also be deployed as CPE for medium and large-sized businesses—collecting voice and data traffic from each site for switched services, interoffice connections, and Internet access—for transport over an STM-1, STM-4, or STM-16 SDH uplink to the central office.
The Cisco ONS 15305 offers enhanced flexibility, making it more effective for scalable, next-generation optical infrastructures. The Cisco ONS 15305 includes a Layer 2 switch fabric that enables tributary interface mapping into a VC-12 (2Mb/s) container. The bandwidth of the Ethernet channel can be configured in 2Mbps increments. The Cisco ONS 15305 can be deployed in many configurations: asan add/drop multiplexer, as a terminal multiplexer, as an STM-4/16 cross-connect (non blocking 64x64 STM-1 matrix at the VC-4/3/12 levels), and as a customer access device. The system supports SNCP/I (VC-4/3/12) as well as 1+1 protection schemes.
The Cisco ONS 15305 can be configured with up to four plug-in service modules from the list below, depending on which application will be implemented.
The Cisco ONS 15305 management solution is based on an embedded Simple Network Management Protocol (SNMP) agent. A local craft interface called Cisco Edge Craft and the element management system—Cisco Transport Manager—are provided for remote supervision and operation of Cisco ONS 15305 devices. The Cisco ONS 15305 also provides a simple VT100 command-line interface (CLI) for initial configuration of the unit. For scalability purposes, and in order to manage larger networks as a whole, Cisco Transport Manager offers a single-seat management solution to operate networks with the Cisco ONS 15305 and all other Cisco optical products.
Figure 2
Cisco ONS 15305 Rear View
Applications
Multiservice Aggregation
The Cisco ONS 15305 can aggregate multiservice traffic when configured with high-density service interfaces (Figure3). With 8-port STM-1 modules, up to eight protected (16 unprotected) 155 Mbps connections carrying Ethernet and TDM traffic can be aggregated from remote Cisco ONS 15302 or Cisco ONS 15305 devices that are used to collect traffic at the customer premises. The multiservice traffic can then be transported over higher-capacity (STM-4, STM-16) uplinks to a Cisco ONS 15454 Multiservice Provisioning Platform (MSPP) at the central office or point of presence (POP). Aggregated 10/100 Ethernet traffic can also be terminated on a Gigabit Ethernet port on the Cisco ONS 15305, and delivered to a central router or switch. The 63-port E1 module and 6-port E3/T3 module can also be used to aggregate local E1 and E3/T3 traffic respectively. Up to 189 E1 and 18 E3 or T3 services can be aggregated on a single Cisco ONS 15305 network element.
Figure 3
Cisco ONS 15305 in a Multiservice Aggregation Application
Multiservice Delivery
The Cisco ONS 15305 offers a small form factor (only one rack unit) and is capable of terminating TDM and native Ethernet traffic, making it an ideal service delivery device (Figure 4). The Cisco ONS 15305 provides a solution for sites that require a large number of services, typical of medium or large-sized businesses, as well as multi-tenant customer locations. The Cisco ONS 15305 can also deliver higher-bandwidth services through interface types such as E3/T3 and Gigabit Ethernet. For Ethernet services, bandwidth can be configured individually for each LAN port in 2-Mbps increments. This allows service providers to provide different levels of service to their customers.
Figure 4
Cisco ONS 15305 as a Multiservice Delivery Platform
Enterprise Private Networks
The Cisco ONS 15305 can serve as an optical transport platform for enterprise private networks (Figure 5). A Cisco ONS 15305 device located at the headquarters or main building of an office, university, or government campus can aggregate Ethernet and TDM traffic from multiple remote sites. Other Cisco ONS 15305 or Cisco ONS 15302 units can be used in these remote locations. The hub unit would simultaneously interface with the post, telephone, and telegraph (PTT) company or service provider to receive bandwidth for switched voice or data services, Internet access, or a wide area extension of the virtual private network (VPN). A similar application takes place in high-rise buildings where the Cisco ONS 15305 can serve as a hub to distribute traffic via an optical backbone to Cisco ONS 15302 or other Cisco ONS 15305 devices in different floors.
Figure 5
Cisco ONS 15305 in an Enterprise Metropolitan or Campus Network Application
Technical Specifications—Cisco ONS 15305 R1.1.0
Posted: Thu Mar 11 17:24:43 PST 2004
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