User guide

The EDA Components

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Figure 14 The Ethernet Controller Node - ECN320

The switch part has Power over Ethernet capabilities and apart from the

controller IP DSLAMs (EDN312), and ESN108 can be connected to it to

form an EAN. Furthermore the optical switch ELN220 can be connected to

it in order to support small remote sites using fiber optical connections. The

embedded nodes may be installed as and when desired.

The Ethernet Node Controller of the ECN330/ECN320 manages all the

embedded nodes. From a management point of view, the switch is also an

embedded element, even though it is located and integrated in the

ECN330/ECN320. All management of the embedded nodes is done

through the Ethernet Node Controller, which is the only element

communicating directly with the Public Ethernet Manager (PEM).

Using the EDA Management Proxy (EMP) function as described previously

in section 4.1.1 on page 15, the Ethernet Node Controller forwards the

communication to and from the embedded nodes. Note that only the

management traffic goes through the Ethernet Node Controller. The end-

user traffic is unaffected by the EAN structure.

The Ethernet Node Controller handles all functions of the Access Domain

Server for the embedded nodes. Therefore the embedded nodes does not

depend on the Access Domain Server, but the Access Domain Server must

be running for the following reasons:

1. All communication with the ECN is SNMP based.

2. The Ethernet Node Controller gets new SW applications for the ECN

from the Domain File Server when SW upgrade is performed.

3. The Ethernet Node Controller gets SW applications and configurations

for the embedded nodes from the Domain File Server when the EAN is

synchronized from PEM.