Ericsson ECN330 Uživatelská příručka Strana 1

System OverviewEDA

The EDA Concept 4 1/1551-HSC 901 35/3 Uen C 2005-12-02 2.2 The EDA System – Basic Principle The basic principle of the EDA System is illustrated b

EDA System Design 94 1/1551-HSC 901 35/3 Uen C 2005-12-02 10.2 Determining the EDA System Functions The basic EDA System functions are based on re

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 95 • Security Requirements - Different security measures can be deployed in order to protec

EDA System Design 96 1/1551-HSC 901 35/3 Uen C 2005-12-02 These requirements are the main input when dimensioning the aggregation network (the numb

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 97 c Non-IP-traffic filtering 2. Separating traffic types in different VLANs within the Acc

EDA System Design 98 1/1551-HSC 901 35/3 Uen C 2005-12-02 The use of PPP creates a kind of tunnel between the CPE and the BRAS. This provides an in

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 99 Figure 61 EDA Access Network Incorporating a BRAS 10.3.3 Service Selection Using VLAN Th

EDA System Design 100 1/1551-HSC 901 35/3 Uen C 2005-12-02 Four different VLANs are defined: One for system management traffic (VLAN1), one for the

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 101 All VLANs solutions except for the three VLANs scenario (Management, Data and Voice) hav

EDA System Design 102 1/1551-HSC 901 35/3 Uen C 2005-12-02 transparent for both tagged and untagged Ethernet frames. This allows services like Home

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 103 10.4 Dimensioning the Network An EDA access network is build around generic system elem

The EDA Concept 1/1551-HSC 901 35/3 Uen C 2005-12-02 5 2.2.1 The IP DSLAM The IP DSLAM is the cornerstone in the EDA system. It converts and aggr

Glossary 104 1/1551-HSC 901 35/3 Uen C 2005-12-02 Glossary AAA Authentication, Authorization and Accounting AAL5 ATM Adaptation Layer 5 Access Doma

Glossary 1/1551-HSC 901 35/3 Uen C 2005-12-02 105 Broadband A transmission bandwidth higher than 2Mbps. Burst Tolerance (BT) The maximum time for w

Glossary 106 1/1551-HSC 901 35/3 Uen C 2005-12-02 Re. the CPE equipment, a DHCP server shall be available somewhere in the ISP-network to provide I

Glossary 1/1551-HSC 901 35/3 Uen C 2005-12-02 107 EDN Ethernet DSL Node comprises EDN110 and EDN312. EMP Ethernet DSL Node End-user An end-user is

Glossary 108 1/1551-HSC 901 35/3 Uen C 2005-12-02 use in multimedia applications, for example Voice over IP (VoIP) HPOV Hewlett Packard Open View

Glossary 1/1551-HSC 901 35/3 Uen C 2005-12-02 109 MAC Media Access Control MAC address Media Access Control address. The physical address of a devi

Glossary 110 1/1551-HSC 901 35/3 Uen C 2005-12-02 be: Network Operator; Service Operator; Subscriber Operator. OVP Over Voltage Protection Packet A

Glossary 1/1551-HSC 901 35/3 Uen C 2005-12-02 111 An authentication and accounting system used by many ISPs. RSS Remote Sub System RSS filter Comp

112 1/1551-HSC 901 35/3 Uen C 2005-12-02 database, IP-DSLAMs (through the PEM Domain Service) and NNM. Sustainable Cell Rate (SCR) The upper limit

The EDA Concept 6 1/1551-HSC 901 35/3 Uen C 2005-12-02 2.2.2 The Aggregation Node As shown in Figure 1 on page 4 the IP DSLAMs are connected to an

Ericsson AB © Ericsson AB - 2005 All Rights Reserved www.ericsson.com 1/1551-HSC 901 35/3 Uen C 2005-12-02

The EDA Concept 1/1551-HSC 901 35/3 Uen C 2005-12-02 7 running on a central computer, to a fully distributed solution where different parts are dep

The EDA Access Network 8 1/1551-HSC 901 35/3 Uen C 2005-12-02 3 The EDA Access Network The main objective of the EDA system is to support provisio

The EDA Access Network 1/1551-HSC 901 35/3 Uen C 2005-12-02 9 The EDA system network may have up to 20 Access Domains. Each Access Domain can have

The EDA Access Network 10 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 4 The Access Domain in the Access Network The figure below shows that a

The EDA Access Network 1/1551-HSC 901 35/3 Uen C 2005-12-02 11 Figure 5 IP Network and Domain Subnets 3.1.3 The Domain Server An Access Domain i

The EDA Access Network 12 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 6 The Access Domain and Domain Subnets The Domain Server City 1 is responsi

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 13 4 The EDA Components The components of the EDA solution are described in further detail

System OverviewEDA. ii 1/1551-HSC 901 35/3 Uen C 2005-12-02 Copyright © Ericsson AB - 2005 All Rights Reserved Disclaimer No part of this document m

The EDA Components 14 1/1551-HSC 901 35/3 Uen C 2005-12-02 As opposed to many traditional DSLAMs the IP DSLAM also terminates the ATM layer used on

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 15 In order to clarify the concept of a stand-alone and embedded IP DSLAM the EMP and non-E

The EDA Components 16 1/1551-HSC 901 35/3 Uen C 2005-12-02 EMP makes the ECN330/ENC320 appear as one large IP DSLAM with one static IP address and

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 17 The Domain Server co-operates with the Management Server, thus creating a distributed ma

The EDA Components 18 1/1551-HSC 901 35/3 Uen C 2005-12-02 4.1.3 The EDN312 and EDN312x IP DSLAM The 12-line IP DSLAM comes in two version, the ED

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 19 4.1.4 The EDN288 IP DSLAMs With the 288-lines IP DSLAM Ericsson introduces the new and

The EDA Components 20 1/1551-HSC 901 35/3 Uen C 2005-12-02 EAN Redundancy EAN redundancy is ensured by connecting the two Ethernet ports of the IP

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 21 Figure 12 EDN312 Link Aggregation Two ports of the ECN330/ECN320 can be joined to form

The EDA Components 22 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 13 Cabling of Ethernet Cables for Link and PoE Redundancy 4.1.5 The ECN Aggr

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 23 Figure 14 The Ethernet Controller Node - ECN320 The switch part has Power over Ether

. 1/1551-HSC 901 35/3 Uen C 2005-12-02 iii Contents 1 Introduction to this Guide 1 1.1 Revision History 1 1.1.1 This revision (C) 1 1.1.2 Version

The EDA Components 24 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 15 Ethernet Access Node Structure The ECN320 contains 24 10BASE-T/100BASE-TX

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 25 ECN330 looks very similar to ECN320, but ECN330 is built on an improved hardware platfor

The EDA Components 26 1/1551-HSC 901 35/3 Uen C 2005-12-02 4.2 The EDA Switches The EDA solution offers a suite of switches - two 1st level aggreg

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 27 Figure 16 EDA Ethernet Switch (8 ports) with PoE - ESN108 The ESN310 Switch The ESN310

The EDA Components 28 1/1551-HSC 901 35/3 Uen C 2005-12-02 The ELN220 Switch The ELN220 switch shown in Figure 18 on page 28, is a 2nd level aggreg

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 29 Figure 19 The ELN220 as an Embedded Node in the EAN The ESN410 Switch The ESN410 is a

The EDA Components 30 1/1551-HSC 901 35/3 Uen C 2005-12-02 The ESN410 is prepared for 19” rack mounting and has built-in fan units that can be repl

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 31 • Small Medium Enterprise (SME) services, such as video conferencing, LAN to LAN, VPN s

The EDA Components 32 1/1551-HSC 901 35/3 Uen C 2005-12-02 4.4 Ethernet Power Nodes For EDA solutions where the IP DSLAMs are not powered by an ED

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 33 4.5 The EDA Converters For small site solutions the EDA system offers two types of conv

Contents iv 1/1551-HSC 901 35/3 Uen C 2005-12-02 4.5.1 The FE to E1 and T1 Converter 33 4.5.2 Ethernet Gateway 34 4.6 Remote Powering 35 4.7 The

The EDA Components 34 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 24 Fast Ethernet to E1 or T1 Converter in a Small Site Solution 4.5.2 Ethernet

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 35 Figure 26 Migration from Ethernet to ATM through EXN401/410 4.6 Remote Powering Remot

The EDA Components 36 1/1551-HSC 901 35/3 Uen C 2005-12-02 Remote site190V-380V/48VDC/DC ConvertersRemote UnitCentral OfficeFlatpackRemote Power Sy

The EDA Components 1/1551-HSC 901 35/3 Uen C 2005-12-02 37 4.7 The EDA Subracks and Cabinets Subracks are available in various sizes and configura

Customer Premises Equipment 38 1/1551-HSC 901 35/3 Uen C 2005-12-02 5 Customer Premises Equipment The termination of the ADSL connection at the cu

Customer Premises Equipment 1/1551-HSC 901 35/3 Uen C 2005-12-02 39 Figure 29 CPE Equipment Protocol Termination Some ADSL modems are able to ope

EDA System Services 40 1/1551-HSC 901 35/3 Uen C 2005-12-02 6 EDA System Services EDA is a versatile and flexible system, and can be designed to f

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 41 Figure 30 on page 41 depicts a traditional access network scenario, where a BRAS contro

EDA System Services 42 1/1551-HSC 901 35/3 Uen C 2005-12-02 These EDA Service rules or definitions are implemented in the Access Node as a virtual

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 43 As Figure 32 illustrates, EDA Access network support both BRAS and multiple edge access

Contents 1/1551-HSC 901 35/3 Uen C 2005-12-02 v 8.3 Multimedia Services 76 8.3.1 Quality 77 8.3.2 Security 77 8.4 Telephony Deployment in EDA 78

EDA System Services 44 1/1551-HSC 901 35/3 Uen C 2005-12-02 In practice, this scenario is done by creating two Service Configurations, and using th

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 45 Two End-users are shown in Figure 34 on page 44. The DSL configuration is set for the t

EDA System Services 46 1/1551-HSC 901 35/3 Uen C 2005-12-02 6.1.2 CPE Access Methods When the End-user is to receive an IP based service, the Cu

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 47 QinQ is used for the following reasons: • To be able to preserve an existing tagging o

EDA System Services 48 1/1551-HSC 901 35/3 Uen C 2005-12-02 IP DSLAMRouter/BRASApplicationServerOuter VLANInner VLANs Inner VLANs Figure 36 VLAN p

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 49 The IP DSLAM supports up to five VLAN tags (including the two it can add), in order to

EDA System Services 50 1/1551-HSC 901 35/3 Uen C 2005-12-02 6.2 Quality of Service Quality of Service (QoS) of a network deals with the ability of

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 51 Interactive gaming however, is more sensitive to large packets losses and unacceptably

EDA System Services 52 1/1551-HSC 901 35/3 Uen C 2005-12-02 ClassificationClassificationClassificationClassificationIP NetworkPSTN/ISDNnetworkEther

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 53 Mapping and QueuingSchedulingEntranceLinkExitLinkHigh Priority QueueLow Priority Queue“

Contents vi 1/1551-HSC 901 35/3 Uen C 2005-12-02 10.4.1 Capacity of System Elements 103 10.4.2 Dimensioning an EDA Access Network 103 Glossary 1

EDA System Services 54 1/1551-HSC 901 35/3 Uen C 2005-12-02 6.2.3 QoS Implementaion The Quality of Service functions (mapping and queuing, sched

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 55 Network DelayInteracting DelayInteracting DelayIADIPDSLAMEthernet SwitchVoiceGatewayEth

EDA System Services 56 1/1551-HSC 901 35/3 Uen C 2005-12-02 Such small delays are in contrast to other VoIP based systems, often imposing one-way

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 57 an overload protection mechanism that is always active. In order to be able to limit th

EDA System Services 58 1/1551-HSC 901 35/3 Uen C 2005-12-02 EthernetServiceVLANServiceVLANServiceVLANPVCsPVCmappingPacketbasedqueuingPacketbasedque

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 59 2. PVC Mapping The Service of the packets is identified and the packets are sent toward

EDA System Services 60 1/1551-HSC 901 35/3 Uen C 2005-12-02 IP DSLAMDownstream trafficPacket based queuing (4 flows)TrafficschedulerPacket based qu

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 61 Queue 1WeightQueue 2WeightQueue 3WeightQueue 4WeightOneRound Figure 44 Deficit Round R

EDA System Services 62 1/1551-HSC 901 35/3 Uen C 2005-12-02 (1500) will be sent. The remaining 500 bytes (if there is no frame with less than 500 b

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 63 Table 6 Discarding Evaluation Steps Step Evaluate 1 UBR: Strict priority queues 4 2 UB

Introduction to this Guide 1/1551-HSC 901 35/3 Uen C 2005-12-02 1 1 Introduction to this Guide This guide is intended to provide the reader with a

EDA System Services 64 1/1551-HSC 901 35/3 Uen C 2005-12-02 the management traffic will use a hidden UBR PVC (a ninth PVC if eight other PVCs are u

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 65 allowance. The Sustainable Cell Rate is an upper limit for the average cell rate that m

EDA System Services 66 1/1551-HSC 901 35/3 Uen C 2005-12-02 PVCsIP DSLAMUpstream trafficPVCpolicingPVCpolicingVLANmappingIPDSLAMoverloadprotectionC

EDA System Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 67 Note the same four queues are used for all traffic coming from the DSL line. Strict pri

System Maintenance 68 1/1551-HSC 901 35/3 Uen C 2005-12-02 7 System Maintenance The EDA system does not require any scheduled maintenance apart fro

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 69 8 Telephony and Multimedia Services When migrating from analog line to A

Telephony and Multimedia Services 70 1/1551-HSC 901 35/3 Uen C 2005-12-02 Telephony over IP (ToIP) is a Voice over IP (VoIP) based carrier class te

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 71 Figure 49 Base band Solution with Integrated POTS/ISDN Filter 8.1.2 Bas

Telephony and Multimedia Services 72 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 50 Base band Solution with External POTS Filter 8.1.3 Baseband S

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 73 Figure 51 Base band Solution with External ISDN Filter 8.2 Telephony o

The EDA Concept 2 1/1551-HSC 901 35/3 Uen C 2005-12-02 2 The EDA Concept The EDA system can be tailored to a wide range of access scenarios, depen

Telephony and Multimedia Services 74 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 52 Telephony over IP Architecture Telephony over IP is based on

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 75 exchange is limited only by capacity and capabilities of the packet based

Telephony and Multimedia Services 76 1/1551-HSC 901 35/3 Uen C 2005-12-02 Call Signaling Call establishment timing has been optimized and is compar

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 77 Increasing demands for streaming and broadcast video services in high qua

Telephony and Multimedia Services 78 1/1551-HSC 901 35/3 Uen C 2005-12-02 8.4 Telephony Deployment in EDA Whether base band POTS or Telephony over

Telephony and Multimedia Services 1/1551-HSC 901 35/3 Uen C 2005-12-02 79 8.6 Multicast Handling The EDA system supports IP multicasting, which is

Telephony and Multimedia Services 80 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 54 IP Multicasting using IGMP Snooping for Video Services The

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 81 9 Security The ability to protect communication systems and information from various types of atta

Security 82 1/1551-HSC 901 35/3 Uen C 2005-12-02 9.2 PPP, VLAN and Forced Forwarding 9.2.1 PPP (Point to Point Protocol) Using PPP, sessions are

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 83 validating takes place. If the authentication request from the subscriber is acknowledged, the RAD

The EDA Concept 1/1551-HSC 901 35/3 Uen C 2005-12-02 3 2.1 ADSL Standards The EDA system supports the following ADSL standards: • ITU-T G992.1 Ann

Security 84 1/1551-HSC 901 35/3 Uen C 2005-12-02 Figure 55 Separation of Traffic Types with VLANs Each of these VLANs has a unique value (the VLA

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 85 example of assigning the voice VLAN ID to all voice PVCs, and the data VLAN ID to all data access

Security 86 1/1551-HSC 901 35/3 Uen C 2005-12-02 verify that the upstream traffic actually uses the returned MAC address of the default gateway as

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 87 Figure 57 DHCP Request with Relay Agent (Option 82) The Service Provider receives the DHCP req

Security 88 1/1551-HSC 901 35/3 Uen C 2005-12-02 The encoding is used by Cisco for a number of routers, which supports the relay agent information

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 89 9.4.1.1 Broadcast Broadcast traffic can in general be filtered out. This filtering will prevent s

Security 90 1/1551-HSC 901 35/3 Uen C 2005-12-02 other party’s IP address is located within the same subnet, then the sender can obtain the destina

Security 1/1551-HSC 901 35/3 Uen C 2005-12-02 91 The basic principle of virtual MAC addresses is that the IP DSLAM performs address translation of

Security 92 1/1551-HSC 901 35/3 Uen C 2005-12-02 Encryption of subscriber traffic is generally considered outside the EDA scope. 9.6 Other Security

EDA System Design 1/1551-HSC 901 35/3 Uen C 2005-12-02 93 10 EDA System Design 10.1 System Design Approach A wide range of different access scena