SM Family of Systems


1.2Target Groups


Network Overview
2.1SM 480 Metro Ethernet Service Transport Platform
2.2SM 240 Metro Ethernet Service Transport Platform


Network Functions
3.1Network Convergence
3.2Differentiated Layer 2 VPN and Transport
3.3Business, Residential, and Backhaul Services


SM Family Hardware
4.2Card Support


SM Family Software
5.1Modular OS
5.2Availability, Reliability, and Resilience
5.3Standards-Based OAM Suite
5.4Routing Protocols
5.5Multicast Protocols
5.6MPLS, VLANs, and Tunneling
5.7Quality of Service


6.1Hardware Documentation
6.2Software Documentation


© Ericsson AB 2009–2011. All rights reserved. No part of this document may be reproduced in any form without the written permission of the copyright owner.


The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damage of any kind resulting from the use of this document.

Trademark List
SmartEdge is a registered trademark of Telefonaktiebolaget LM Ericsson.
NetOp is a trademark of Telefonaktiebolaget LM Ericsson.

1   Introduction

This document gives an overview of the Ericsson SM family ® of Metro Ethernet Service Transport platforms.

The SM family of systems is a family of Smart Ethernet Switches, providing a metro platform optimized to deliver scalable Metro Ethernet services. Smart Ethernet provides the ability to perform both fixed and mobile services on a single, converged carrier Ethernet network, with simplified network architectures and lower carrier infrastructure costs. This family of platforms includes an advanced combination of IP/Multiprotocol Label Switching (MPLS) transport, traffic engineering with tiered or hierarchical quality of service (QoS) support, and comprehensive integrated Ethernet operation, administration, and maintenance capabilities for bridging between transport and IP domains.

1.1   Scope

This document gives a high-level description of the SM family of systems. This document is intended to introduce readers to the general capabilities of the SM family of systems and show how to understand and use SM family hardware and software documentation.

1.2   Target Groups

This document is intended for network operators, network and service planners, as well as system engineers and administrators. It assumes a working knowledge of networking and telecommunications.

2   Network Overview

The SM family of systems is designed to support converged metro networks, bridging legacy transport and IP domains. This family of chassis focuses on providing Metro Ethernet service transport capabilities for carriers, converging Ethernet service delivery and high-density Ethernet aggregation with IP/MPLS traffic support.

The SM family product offering includes the SM 480 and SM 240 Metro Ethernet service transport platforms. These platforms can be used in conjunction with the NetOp Element Management System (EMS) and the NetOp Network Service Manager (NSM).

Figure 1 shows the SM family of systems.

Figure 1   SM Family of Chassis

2.1   SM 480 Metro Ethernet Service Transport Platform

The SM 480 is a high-bandwidth, high-capacity platform targeted for metro core service transport. The SM 480 is purpose-built to aggregate of high-speed uplinks from the metro access transport and centralize switching and routing functions for large numbers of Ethernet virtual private line (E-LINE) circuits and Ethernet virtual private local area network (E-LAN) customers.

2.2   SM 240 Metro Ethernet Service Transport Platform

The SM 240 targets metro access transport. The SM 240 leverages the E-LINE and E-LAN capabilities of the SM 480 in a cost-effective compact form factor designed for co-location sites and space constraint applications

3   Network Functions

The SM family of systems is designed to deliver packet-based carrier Ethernet service delivery and high-density Ethernet aggregation using Ethernet, IP, and IP/MPLS. In addition to Ethernet-based connectivity, such as Ethernet local loop (ELL), MPLS-based connectivity (pseudowires), and the typical services delivered over carrier Ethernet networks (such as virtual leased lines [VLLs] and virtual private LAN service [VPLS]), the SM family of chassis offers carrier-class IP based connectivity. The additional intelligence in the SM family of systems allows for a number of roles and functions in the carrier Ethernet wireline, wireless, and converged network.

3.1   Network Convergence

The SM family of chassis allows service providers to converge disparate access networks using any combination of Ethernet, IP, and IP/MPLS. This facilitates migration of legacy time-division multiplexing (TDM) networks into a single, packet-based metro Ethernet network, or convergence of fixed and mobile metro core and access networks; for example, as shown in Figure 2.

Figure 2   Convergence of Fixed and Mobile Architectures

3.2   Differentiated Layer 2 VPN and Transport

The SM family of systems includes a rich set of management capabilities not available on traditional carrier switches, allowing it to operate as both Ethernet transport and as a service-oriented Ethernet platform, without compromising performance. Granular Layer 2 hierarchical QoS (H-QoS) provides service control to individual service sessions; these services can be provisioned from a centralized management platform. Protocol transparency of Layer 2 protocols allows a rich set of Ethernet service offerings across the access, aggregation, and core layers, as shown in Figure 3.

Figure 3   SM Family in Access, Aggregation, and Core Layers

3.3   Business, Residential, and Backhaul Services

The SM family of chassis can be used to provide point-to-point or multipoint-to-multipoint secure, traffic-engineered connectivity for enterprise customers, as in the following examples:

To these services, the SM family of systems adds flexible tunnel policy management, stringent QoS and traffic engineering, and scalability, operating within a highly resilient operating system.

For backhauling in fixed and mobile networks, Ethernet with IP can replace less cost-effective T1/E1 links or Asynchronous Transfer Mode (ATM) channelized OC-3/STM-1 links. The SM family of chassis supports VLLs, and can therefore converge different services on a single metro network.

The SM family of chassis can also be used to implement the so-called "triple-play" services of Voice over IP (VoIP), broadband Internet access, and IPTV, where traffic for each service and subscriber can require different treatment. On the SM family of systems, the service provider can choose whether to deliver these services using either VPLS or Protocol Independent Multicast (PIM). If PIM Dual Join is used, multicast replication and delivery can be highly optimized.

The SM family platforms converging business, Mobile, and Residential Services are shown in Figure 4.

Figure 4   SM Platforms Converging Business, Mobile, and Residential Services

4   SM Family Hardware

The SM family of systems consists of the SM 480 chassis for the metro core and the SM 240 chassis for metro access.

4.1   Chassis

4.1.1   SM 480

The SM 480 provides E-LINE/ E-LAN service scalability with low power consumption. Purpose-built for the metro core transport, the SM 480 aggregates high-speed uplinks from the metro access network. It has a maximum port density of 240 ports of Gigabit Ethernet or 48 ports of 10 Gigabit Ethernet. This high bandwidth capacity and its fully-distributed control plane architecture allow the SM 480 to serve as a central platform for switching E-LINE circuits and E-LAN customers. The SM 480 provides the same compliance, electrical specifications, electrical power connections, environmental requirements, and physical specifications as the SmartEdge 800 router.

The SM 480 chassis has a carrier-grade design, engineered to standards for deployment in carrier networks including Network Equipment-Building System (NEBS) and Restriction of Hazardous Substances (RoHS). On the SM 480, 1+1 redundancy is used to protect the routing and controller card. If a fault occurs, the card continues to operating and can selectively reboot the faulted task, leaving other tasks and logical connections unaffected. The SM 480 also provides non-stop service, in that the flow of user data is either not disrupted or is minimally disrupted when a fault occurs in the system. Specifically, problems that occur in the control plane do not affect user traffic. The SM 480 includes redundant power supplies, fan trays, and port redundancy using link aggregation and Automatic Protection Switching (APS).

4.1.2   SM 240

The SM 240 is purpose-built for co-location sites and space constraint applications. It is designed to offer the same rich feature set as the SM 480 together with service scalability in a compact form factor. The SM 240 provides the same compliance, electrical specifications, electrical power connections, environmental requirements, and physical specifications as the SmartEdge 600 router.

4.2   Card Support

The SM 480 and the SM 240 each support the following cards.

4.2.1   Controller Cards

The controller card type designation for the SM 480 and SM 240 is SMRP2. This card has four processors with shared memory and is responsible for running the operating system, the NetOp Element Management System (EMS) software, and external synchronization software.

4.2.2   Line Cards

The SM 480 and the SM 240 both support a rich set of high-density line cards.   60-Port Fast Ethernet

The 60-port Fast Ethernet (FE) card, which provides 60 FE ports and two Gigabit Ethernet (GE) ports, is also referred to as the FE–GE card. The FE ports are copper-based 10Base-T or 100Base-TX with selectable speeds of 10 Mbps or 100 Mbps, and the GE ports are copper-based 1000Base-TX with selectable speeds of 100 or 1000 Mbps.   10-Port Gigabit Ethernet 1020 Card

The 10-port Gigabit Ethernet 1020 (GE1020) card is designed for traffic management. This PPA2-based card has an increased minimum memory capacity of 1 GB and can process data internally to match the speed of the ports.   20-Port Gigabit Ethernet Card

The 20-port Gigabit Ethernet (GE) card is designed as a subscriber-facing module and as well as a network uplink module. This third-generation PPA card has an increased minimum memory capacity of 20 Gbps, It also has increased port density compared with previous GE cards. It supports up to 48K circuits per card.   10-Port Gigabit Ethernet DDR Card

The 10-port Gigabit Ethernet DDR-based card is designed for traffic management using second-generation PPAs. This card has an increased minimum memory capacity of 1 GB and can process data internally to match the speed of the ports. It also has increased circuit density of 32K with a minimum of 24K with eight Class of Service (CoS) queues.   1-Port 10 Gigabit Ethernet Card

The 1-port 10 Gigabit Ethernet (1x10GE) card is designed for traffic management using the second-generation PPAs. This card has an increased minimum memory capacity of 1 GB and can process data internally to match the speed of the port, which runs at 10 Gbps. The port on this line card can be configured as LAN-PHY at 10320 Mbits/s, or WAN-PHY at 9953.25 Mbits/s.   4-Port 10 Gigabit Ethernet Card

The 4-port 10GE line card is designed to be deployed in the SM Family router platform to address the requirements for applications and services with large volumes of network traffic. Each 4-port 10GE card is optimized to deliver Ethernet services, operates as an uplink to other switches and routers in the network or for interconnectivity between two SM family routers.

This PPA3-based card has an increased port density compared with previous 10GE cards. It supports up to 48K circuits per card. This 4-port 10GE card is capable of a maximum throughput of 20 Gbps. It can be used in ingress oversubscription mode at a maximum of 2 to 1 (40 Gbps over four 10GE faceplate ports; 20 Gbps within the card and across the backplane). Ports on this card can be configured in one of two ingress oversubscription modes for incoming traffic: priority-based packet discard for traffic from trusted networks and random-based packet discard from unfiltered nontrusted networks.   1-Port 10 Gigabit Ethernet DDR Card

The 1-port 10GE DDR-based card designed for traffic management using second-generation PPAs. This multimode DDR card supports the 10GE LAN-PHY, 10GE WAN-PHY, 10GE-DWDM, or OTN-DWDM modes for the SM Family chassis.

This card supports a minimum of 1 GB of memory capacity and can process data internally to match the speed of the port — 10.3125 Gbps in 10GE LAN-PHY or 10GE DWDM; 9.953 Gbps in 10GE WAN-PHY mode; and 11.0957 Gpbs in OTN-DWDM mode.

This card also supports 802.1Q and plain Ethernet encapsulations. For 10GE LAN-PHY, 10GE WAN-PHY, 10GE-DWDM, or OTN-DWDM mode, the maximum MTU is 9,198 bytes.   Channelized 8-port OC-3/STM-1 or OC-12/STM-4 Card

The Channelized OC-3/STM-1 or OC-12/STM-4 line card is an 8-port dual-services card with channelization capabilities down to fractional E1/T1. Both SONET (Synchronous Optical Networking) and SDH (Synchronous Digital Hierarchy) mappings are supported. The card hardware supports DS3, DS1, DS0 group (nx64K), and channelization for all Packet over SONET (POS) services.

4.2.3   MEF9 and MEF14 Certification

The Metro Ethernet Forum (MEF) certification program ensures that products and services are compliant to specifications that allow seamless operation through different countries and traversing multiple carrier networks. SM family chassis are certified for MEF 9, a service certification for equipment manufacturers, and MEF 14, traffic management certification for equipment manufacturers.

5   SM Family Software

The SM family of systems runs on the SmartEdge OS software platform, a rich, multipurpose, multiservice operating system that can provide Ethernet services with MPLS transport support, stringent traffic engineering, tiered or hierarchical QoS support, and integrated management capabilities.

The system is high-performance, with line-rate packet forwarding, and robust, ensuring packet reliability and meeting rigorous uptime and availability requirements. It is scalable, supporting hundreds of thousands of customers and services, and flexible, offering support for multiple services. This section describes some of the key features of the SM family's SmartEdge OS software platform.

5.1   Modular OS

The SmartEdge OS offers a modular operating system with separation of control, data, and service planes. This operating system supports multiple processors and uses a software infrastructure where major system functions run as separate tasks, each with its own thread and memory space. The modular design also provides stability and protects against protocol errors.

Contexts are supported as a separate routing and administrative domain, with separate routing protocol instances, addressing, authentication, accounting, and so on, and does not share this information with other contexts.

5.2   Availability, Reliability, and Resilience

The modular SmartEdge OS is highly resilient and field-proven. Faults in one task do not become systemic, permeate to other tasks, or bring control plane hardware down. Each task is independently rebootable without affecting overall system operation, including traffic forwarding. If the primary routing processor must switch over, data traffic continues to flow and established connections remain operational. For most routing and signaling protocols, standards-based graceful restart procedures take effect. The Channelized 8-port OC-3/STM-1 or OC-12/STM-4 Card supports Automatic Protection Switching (APS).

The SM family of systems also supports other mechanisms for ensuring non-disruption and continuity of services. These include fast and scalable restoration for hierarchical VPLS networks, link aggregation for Ethernet resiliency (802.3ad), and Label Switched Paths (LSP) protection using back-up LSPs or Fast Re-Route (FRR).

When IEEE 802.3ad Ethernet Resilience is used to protect the Ethernet link, advanced QoS and traffic engineering such as rate-limiting and policing can be configured per link bundle. Members of the link can be backed up by another port. Ethernet resiliency can also be applied to bridge groups, either VPLS or non-VPLS. L2VPN pseudowire and L2VPN static connections are supported on Ethernet access link group connections. L2VPN support is also available at the link group pseudo-port level for Ethernet access link groups, at both the VLAN or port level. Mission-critical applications can be protected by provisioning an additional LSP to act as a second back-up for a back-up LSP.

Dual PIM Join is supported to provide resiliency for applications that require multicast operation. This feature limits interruptions from link failure for multicast traffic forwarding.

5.3   Standards-Based OAM Suite

SM family platforms are designed for rapid service provisioning, proactive fault and performance monitoring, and comprehensive diagnostic capabilities. When managed by Ericsson's NetOp Network Service Manager (NSM), service providers can provision end-to-end IP VPN circuits, automate provisioning workflows, and monitor end-to-end services with point-and-click operations.

Configuration and network management protocol support includes RADIUS, TACACS+, and SNMP versions 1, 2, and 3. Ericsson's NetOp EMS allows management of the SM family deployment using an intuitive GUI interface, for simplified network monitoring and provisioning workflows and tasks. The NetOp EMS leverages standards-based monitoring and troubleshooting such as IEEE 802.1ag and incorporates other diagnostic mechanisms including the following:

5.4   Routing Protocols

The SM family supports a full range of routing protocols, including the following:

5.5   Multicast Protocols

The SM family supports Internet Group Management Protocols (IGMP), including IGMP snooping and IGMP filtering, as well as PIM and PIM-Sparse Mode (PIM-SM).

5.6   MPLS, VLANs, and Tunneling

The SM family of systems' flexible and powerful set of transport services includes the following:

5.7   Quality of Service

The SM family of chassis leverages the SmartEdge OS's feature-rich and granular QoS mechanisms, including the following:

5.8   Security

SM family chassis can be fully hardened for secure operation; security features include the following:

6   CPI

The CPI library is available through the Ericsson CPI extranet (provided that an e-business portal is available). The CPI library contains both hardware documentation and software documentation.

6.1   Hardware Documentation

This section lists hardware documentation provided for the SM family of systems.

6.1.1   Safety and Environment

The guides in Table 1 are completely customized for the SM family of systems.

Table 1    Safety and Environment Guides

Personal Health and Safety Information

System Safety Information

6.1.2   Installation

The guides in Table 2 include content pertaining to both the SM family of systems and the SmartEdge router.

Table 2    Installation Guides

SmartEdge 600 and SM 240 Unpacking Instructions

Transceivers for SmartEdge and SM Family Line Cards

6.1.3   Operation and Maintenance

The guides in Table 3 are completely customized for the SM family of systems..

Table 3    Operation and Maintenance Guides

Inspection And Cleaning Of Optical Connectors

SM 240 Hardware Guide

SM 480 Hardware Guide

6.2   Software Documentation

The software documentation for the SM family of systems documents the capabilities of the SmartEdge OS, on which the SM family of systems is based. In addition to Metro Ethernet capability, the SmartEdge OS also includes a rich set of functions used on the SmartEdge router, Ericsson's intelligent multi-service edge router (MSER). In general, SM family software documentation does not distinguish between features supported on the SM family of systems and the SmartEdge router.

Software documentation is differentiated at the document level: if an entire document describes a feature set that is not supported on SM family platforms, the document is not included in the SM family library. For example, the Configuring NAT Policies document, included in the SmartEdge router documentation library, is omitted from the SM family library.

Documentation is not differentiated below the document level; therefore, individual unsupported features may appear in the documentation. For example, the SM family of systems does not support DHCP server. It does, however, support DHCP relay, and therefore the Configuring DHCP document is included in the SM family library, including sections on DHCP server. Similarly, command-line interface (CLI) reference documents are inclusive of both SM family and the SmartEdge router features. Unsupported commands may occur in SM family documentation, and supported commands may describe unsupported options or configuration modes. To understand which commands, options, and configuration modes are actually available on your system, it is important to understand the general capability of the SM family platform.

The functionality described in Table 4 is not supported on the SM family of chassis but may appear in SM family documentation.

Table 4    SmartEdge OS Functionality Not Supported on the SM Family of Systems

System Functionality



Subscribers are the end users of the high-speed access services.

Authentication, Authorization and Accounting

AAA related to subscriber access is not supported.


PPP-based encapsulations are not supported.

Non-Ethernet Layer 2 Encapsulations

Frame Relay and Cisco HDLC encapsulations are not supported.


CLIPS is not supported.


Only cross-connections among Ethernet and ATM circuits are supported..


L2TP tunnels are not supported. IPsec VPNs are not supported.


Dynamic bindings are not supported. Multibind interfaces and IP pools are not supported.

IP Protocols

DHCP server is not supported. ANCP is not supported.

IP Services

DNS and HTTP Redirect are not supported. Hotlining and Mobile IP (wireless) are not supported. NAT policies are not supported. Service policies are not supported.


Rate limiting for subscribers (PADI and DHCP) are not supported.


RADIUS, RADIUS attributes, RADIUS-guided profiles, and other RADIUS services for supporting subscriber-related functions is not supported.


IGMP service profiles are not supported.

Advanced Services

Deep packet inspection (DPI) and IPsec are not supported.

The sections that follow list the documents included in the SM family library.

6.2.1   Planning

Table 5    Planning Guides

Network Impact Report

6.2.2   Installation

Table 6    Software Installation Guides

Installing the SmartEdge OS

6.2.3   Initial Configuration

Table 7    Initial Configuration Guides

Configuring Contexts and Interfaces

Managing Configuration Files

Performing Basic Configuration Tasks

6.2.4   Operation and Maintenance   Fault Management

Table 8    Fault Management Guides

Alarms and Probable Causes

SNMP MIB Notifications


Debugging   Configuration Management   Bridges and Cross-Connections
Table 9    Bridges and Cross-Connection Guides

Configuring Bridging

Configuring Cross-Connections   Cards, Ports, and Channels
Table 10    Cards, Ports, and Channels Guides

Configuring Ethernet Ports

Configuring Cards   Circuits
Table 11    Circuits Guides

Configuring Circuits

Configuring Link Aggregation   IP Routing Protocols
Table 12    IP Routing Protocol Guides

Configuring Basic IP Routing

Configuring BFD

Configuring BGP

Configuring DVSR

Configuring IP Multicast

Configuring IS-IS

Configuring OSPF

Configuring RIP

Configuring Routing Policies   IP Service Policies
Table 13    IP Service Policy Guides

Configuring Forward Policies   IP Service Protocols
Table 14    IP Service Protocol Guides

Configuring ARP

Configuring DHCP

Configuring ND

Configuring NTP   IP Services
Table 15    IP Services Guides

Configuring ACLs

Configuring DNS   MPLS Routing
Table 16    MPLS Routing Guides

Configuring BGP/MPLS

Configuring L2VPN

Configuring LDP

Configuring MPLS

Configuring VPLS

Configuring Port Pseudowire Connections   Network Management
Table 17    Network Management Guides

Configuring Bulkstats

Configuring RMON and SNMP   Operations, Administration, and Maintenance
Table 18    Operations, Administration, and Maintenance Guides

Configuring Ethernet CFM   QoS
Table 19    QoS Guides

Configuring Circuits for QoS

Configuring Flow Admission Control

Configuring Rate-Limiting and Class-Limiting

Configuring Queuing and Scheduling   Subscriber Management
Table 20    Subscriber Management Guides

Configuring Authentication, Authorization, and Accounting

Configuring Bindings

Configuring RADIUS

Configuring RADIUS Attributes   Tunnels
Table 21    Tunnels Guides

Configuring GRE Tunnels

Configuring Single-Circuit Tunnels   Performance Management

Table 22    Performance Management Guides

Configuring RFlow

Load Balancing

Enterprise MIBs

Standard SNMP MIBs   Security Management

Table 23    Security Management Guides

Configuring RFlow

Load Balancing

Enabling Licensed Features

Restricting Access to the CLI

Configuring Malicious Traffic Detection and Monitoring   Hardware Management

Table 24    Hardware Management Guides

Managing Hardware   Software Management

Table 25    Software Management Guides

Managing Files

Performing Basic System Tasks   CLI Commands

Table 26    CLI Command Guides

All command files are included in the SM family library.

6.2.5   Emergency

Table 27    Emergency Guides

Recovering Passwords

6.2.6   Interface

Table 28    Interface Guides

Configuring Communications with the NetOp EMS


authentication, authorization, and accounting
access control list
Access Node Control Protocol
Automatic Protection Switching
Address Resolution Protocol
autonomous system
Asynchronous Transfer Mode
Asynchronous Transfer Mode weighted fair queuing
Bidirectional Forwarding Detection
Border Gateway Protocol
class of service
Constrained Shortest Path First
Dynamic Host Configuration Protocol
Domain Name System
Differentiated Services Code Point
dynamically verified static routing
dense wave division multiplexing
Ethernet virtual private LAN
Ethernet virtual private line
Ethernet virtual private tree
enhanced deficit round-robin
Exterior Gateway Protocols
Ethernet local loop
Fast Re-Route
Generic Routing Encapsulation
hierarchical QoS
hierarchical VPLS
home agent
internal BGP
Internet Control Message Protocol
Internet Group Management Protocol
Internet Protocol
IP, Version 4
IP, Version 6
Intermediate System-to-Intermediate System
Internetworking Function
link aggregation group
local area network
local area network physical layer standard
Label Distribution Protocol
Layer 2 Tunneling Protocol
Layer 2 Virtual Private Networks
Label Switched Path
Message Digest 5
Multicast Source Discovery Protocol
Multiprotocol Label Switching
Network Address Translation
Network Equipment-Building System
Network Time Protocol
Open Shortest Path First
provider edge
Packet Processing ASICs
Point-to-Point Protocol
PPP over Ethernet
priority queuing
permanent virtual circuits
Pseudo Wire Emulation Edge-to-Edge
priority weighted fair queuing
quality of service
Remote Authentication Dial-In User Service
random early detection
Routing Information Protocol
Restriction of Hazardous Substances
reverse path forwarding
Rapid Spanning Tree Protocol
Resource Reservation Protocol
SM Route Processor
Shortest Path First
Secure Shell
Terminal Access Controller Access Control System Plus
Transmission Control Protocol
time-division multiplexing
type of service
User Datagram Protocol
Virtual Circuit Connectivity Verification
virtual leased line
Voice over IP
virtual private LAN service
Virtual Private Network
virtual private wire service
virtual router ID
Virtual Router Redundancy Protocol
vendor-specific attribute
wide area network
wide area network physical layer standard
weighted random early detection