SM Family of Systems

Contents

1Introduction
1.1Scope
1.2Target Groups

2

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

3

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

4

SM Family Hardware
4.1Chassis
4.2Card Support

5

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
5.8Security

6

CPI
6.1Hardware Documentation
6.2Software Documentation

Glossary
Copyright

© 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.

Disclaimer

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.

4.2.2.1   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.

4.2.2.2   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.

4.2.2.3   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.

4.2.2.4   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.

4.2.2.5   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.

4.2.2.6   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.

4.2.2.7   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.

4.2.2.8   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

Notes

Subscribers

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

Authentication, Authorization and Accounting

AAA related to subscriber access is not supported.

PPP, PPPoE, PPPoA, PPPoAoE, MLPPP

PPP-based encapsulations are not supported.

Non-Ethernet Layer 2 Encapsulations

Frame Relay and Cisco HDLC encapsulations are not supported.

CLIPS

CLIPS is not supported.

Cross-connections

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

Tunnels

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

Bindings

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.

QoS

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

RADIUS

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

Routing

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

6.2.4.1   Fault Management

Table 8    Fault Management Guides

Alarms and Probable Causes

SNMP MIB Notifications

Logging

Debugging

6.2.4.2   Configuration Management

6.2.4.2.1   Bridges and Cross-Connections
Table 9    Bridges and Cross-Connection Guides

Configuring Bridging

Configuring Cross-Connections

6.2.4.2.2   Cards, Ports, and Channels
Table 10    Cards, Ports, and Channels Guides

Configuring Ethernet Ports

Configuring Cards

6.2.4.2.3   Circuits
Table 11    Circuits Guides

Configuring Circuits

Configuring Link Aggregation

6.2.4.2.4   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

6.2.4.2.5   IP Service Policies
Table 13    IP Service Policy Guides

Configuring Forward Policies

6.2.4.2.6   IP Service Protocols
Table 14    IP Service Protocol Guides

Configuring ARP

Configuring DHCP

Configuring ND

Configuring NTP

6.2.4.2.7   IP Services
Table 15    IP Services Guides

Configuring ACLs

Configuring DNS

6.2.4.2.8   MPLS Routing
Table 16    MPLS Routing Guides

Configuring BGP/MPLS

Configuring L2VPN

Configuring LDP

Configuring MPLS

Configuring VPLS

Configuring Port Pseudowire Connections

6.2.4.2.9   Network Management
Table 17    Network Management Guides

Configuring Bulkstats

Configuring RMON and SNMP

6.2.4.2.10   Operations, Administration, and Maintenance
Table 18    Operations, Administration, and Maintenance Guides

Configuring Ethernet CFM

6.2.4.2.11   QoS
Table 19    QoS Guides

Configuring Circuits for QoS

Configuring Flow Admission Control

Configuring Rate-Limiting and Class-Limiting

Configuring Queuing and Scheduling

6.2.4.2.12   Subscriber Management
Table 20    Subscriber Management Guides

Configuring Authentication, Authorization, and Accounting

Configuring Bindings

Configuring RADIUS

Configuring RADIUS Attributes

6.2.4.2.13   Tunnels
Table 21    Tunnels Guides

Configuring GRE Tunnels

Configuring Single-Circuit Tunnels

6.2.4.3   Performance Management

Table 22    Performance Management Guides

Configuring RFlow

Load Balancing

Enterprise MIBs

Standard SNMP MIBs

6.2.4.4   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

6.2.4.5   Hardware Management

Table 24    Hardware Management Guides

Managing Hardware

6.2.4.6   Software Management

Table 25    Software Management Guides

Managing Files

Performing Basic System Tasks

6.2.4.7   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


Glossary

AAA
authentication, authorization, and accounting
 
ACL
access control list
 
ANCP
Access Node Control Protocol
 
APS
Automatic Protection Switching
 
ARP
Address Resolution Protocol
 
AS
autonomous system
 
ATM
Asynchronous Transfer Mode
 
ATMWFQ
Asynchronous Transfer Mode weighted fair queuing
 
BFD
Bidirectional Forwarding Detection
 
BGP
Border Gateway Protocol
 
CoS
class of service
 
CSPF
Constrained Shortest Path First
 
DHCP
Dynamic Host Configuration Protocol
 
DNS
Domain Name System
 
DSCP
Differentiated Services Code Point
 
DVSR
dynamically verified static routing
 
DWDM
dense wave division multiplexing
 
E-LAN
Ethernet virtual private LAN
 
E-LINE
Ethernet virtual private line
 
E-TREE
Ethernet virtual private tree
 
EDRR
enhanced deficit round-robin
 
EGPs
Exterior Gateway Protocols
 
ELL
Ethernet local loop
 
FRR
Fast Re-Route
 
GRE
Generic Routing Encapsulation
 
H-QoS
hierarchical QoS
 
H-VPLS
hierarchical VPLS
 
HA
home agent
 
iBGP
internal BGP
 
ICMP
Internet Control Message Protocol
 
IGMP
Internet Group Management Protocol
 
IP
Internet Protocol
 
IPv4
IP, Version 4
 
IPv6
IP, Version 6
 
IS-IS
Intermediate System-to-Intermediate System
 
IWF
Internetworking Function
 
LAG
link aggregation group
 
LAN
local area network
 
LAN-PHY
local area network physical layer standard
 
LDP
Label Distribution Protocol
 
L2TP
Layer 2 Tunneling Protocol
 
L2VPNs
Layer 2 Virtual Private Networks
 
 
LSP
Label Switched Path
 
MD5
Message Digest 5
 
MDSP
Multicast Source Discovery Protocol
 
MPLS
Multiprotocol Label Switching
 
NAT
Network Address Translation
 
NEBS
Network Equipment-Building System
 
NTP
Network Time Protocol
 
OSPF
Open Shortest Path First
 
PE
provider edge
 
PPAs
Packet Processing ASICs
 
PPP
Point-to-Point Protocol
 
PPPoE
PPP over Ethernet
 
PQ
priority queuing
 
PVC
permanent virtual circuits
 
PWE3
Pseudo Wire Emulation Edge-to-Edge
 
PWFQ
priority weighted fair queuing
 
QoS
quality of service
 
RADIUS
Remote Authentication Dial-In User Service
 
RED
random early detection
 
RIP
Routing Information Protocol
 
RoHS
Restriction of Hazardous Substances
 
RPF
reverse path forwarding
 
RSTP
Rapid Spanning Tree Protocol
 
RSVP
Resource Reservation Protocol
 
SMRP
SM Route Processor
 
SPF
Shortest Path First
 
SSH
Secure Shell
 
TACACS+
Terminal Access Controller Access Control System Plus
 
TCP
Transmission Control Protocol
 
TDM
time-division multiplexing
 
ToS
type of service
 
UDP
User Datagram Protocol
 
VCCV
Virtual Circuit Connectivity Verification
 
VLL
virtual leased line
 
VoIP
Voice over IP
 
VPLS
virtual private LAN service
 
VPN
Virtual Private Network
 
VPWS
virtual private wire service
 
VRID
virtual router ID
 
VRRP
Virtual Router Redundancy Protocol
 
VSA
vendor-specific attribute
 
WAN
wide area network
 
WAN-PHY
wide area network physical layer standard
 
WRED
weighted random early detection