Cisco Cisco ONS 15310-CL SONET Multiservice Platform Scheda Tecnica

Cisco Systems, Inc.

Page 1 of 7

Data Sheet

Cisco ONS 15310 ML-Series 8-Port 10/100 Switched Ethernet Card for the
Cisco ONS 15310 SONET Multiservice Platforms

The Cisco

ONS 15310 SONET multiservice provisioning platforms are optimized for use at the customer location and at

aggregation nodes in a service provider’s network or business campus environments. The Cisco ONS 15310 supports a

broad range of Layer 1 transport and Layer 2 packet-switching functions, allowing for flexible packet services over

Ethernet and SONET.

Cisco ONS 15310 ML-Series 8-Port 10/100 Ethernet Card Overview

Traditional Ethernet over SONET services consist of simple Layer 1 mapping of Ethernet frames into SONET for transport between two

endpoints where SONET protection mechanisms are used to deliver sub-50-millisecond (ms) resiliencies. Consequently, bandwidth must be

reserved for both working and protected traffic, resulting in underutilization of available bandwidth. Furthermore, services such as voice over

IP (VoIP), digital videoconferencing, surveillance, and VPNs all require interconnectivity between multiple end locations. Using the traditional

Ethernet over SONET point-to-point model, these solutions become very complicated and highly inefficient.

Switched Ethernet uses statistical multiplexing, which supports oversubscription and better usage of Ethernet networks. Resilient packet ring

(RPR) enables efficient multipoint services, with spatial reuse of bandwidth and sub-50-ms, Layer 2 ring-based protection. By using switched

Ethernet and RPR, the result is a more robust, efficient solution that economically addresses the needs of today’s advanced services

requirements.

The Cisco ONS 15310 ML-Series 8-Port 10/100 Ethernet card is a Layer 2-switched services card that interoperates with the Cisco ONS 15454

ML-Series data cards on the Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP), delivering Ethernet and Fast Ethernet

solutions that span access metropolitan-area networks.

Key Features and Benefits

Physically, the card provides a mapping of up to eight 10/100 Ethernet encapsulated traffic streams into SONET payloads using high-order

(STS-1) contiguous concatenation or virtual concatenation (VCAT) with a choice of Generic Framing Protocol (GFP) or High-Level Data Link

Control (HDLC)-based framing. The card also supports Link Capacity Adjustment Scheme (LCAS) that allows hitless dynamic adjustment of

SONET link bandwidth. Each 10/100 Ethernet port can be mapped to a SONET channel in increments of STS-1 granularity. Each card supports

packet processing, classification, quality of service (QoS)-based queuing, traffic scheduling, RPR protected transport, and packet multiplexing

services.

The Cisco ONS 15310 ML-Series 8-Port 10/100 Mbps Ethernet card provides switched operating mode, with eight subscriber interfaces and

two virtual packet-over-SONET (POS) or Virtual Concatenation Group (VCG) SONET interfaces mapped through the cross-connect for

transport with other services between network elements. Point-to-point transport POS with service aggregation through Layer 2 switching or

multiple Cisco ONS 15310 ML-Series cards in a ring topology are configured as an RPR where each POS port represents one direction of the

RPR from each individual card. The Ethernet interfaces are switched locally and are then transported over the RPR. The Ethernet traffic is

switched based on the dynamically learned MAC addresses and supports 802.1Q VLAN and the QinQ (hierarchical VLAN) to achieve efficient

customer-traffic segregation in the transport network while maintaining VLAN transparency across the transport RPR network. Along with

Ethernet switching, the card also supports a robust set of QoS features to help ensure end-to-end application and differentiated services

delivery.