User guide

The EDA Components

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 up to 2016 end-users. This number of lines can be

reached, if all ECN330/ECN320 downlink ports are used for aggregation of

ESN108 switches, and the ESN108 switches each employ 7 electrical

downlink ports, and if the EDN312 IP DSLAMs are used entirely. If the

EDN312 IP DSLAMs are connected directly to the downlink ports of the

ECN330/ECN320, then 288 ADSL lines will be available. This solution is

achieved with the EDN288, which is described later. The EDN288 is

referred to as an 288-lines IP DSLAM but should be thought of as an EAN

with EDN312 IP DSLAMs.

The ECN320 benefits from automatic registration of all connected network

elements and their ports, thus making implementation, expansion and

replacement of nodes very user-friendly. Another advantage is, that

network elements are maintained by their local EMP and do not depend on

a Domain Server during normal operation.

The Domain Server is only used by the EAN for software upgrade,

synchronization, and for SNMP commands.

The network elements are loaded with application software and a

configuration file from the EMP. The load is done locally and not from the

PEM management system, thus reducing management traffic in the

network.

Characteristics of an aggregation node with EMP:

• Auto-registration of network elements

• Network element software and configuration files are distributed to the

EMP

• One IP address per aggregation node

4.1.2 EDA Solution without EMP

The figure below, see Figure 9 on page 17, shows four IP DSLAMs and

one 8-port Ethernet switch (ESN108) connected to an ESN310, which is an

Ethernet switch without EMP. All six IP addresses of the network elements

are visible to the management network and all six elements are maintained

individually from PEM.

Each network element is registered manually in PEM.

The Ethernet switch ESN310 aggregates traffic in the Access Domain. The

PEM Domain Server provides network elements in the Access Domain with

application software and configuration data. The Domain Server is also

responsible for alarm handling and network topology discovery.