User guide

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 2
nd
level
aggregation switch offering 24 optical ports for aggregation of the ESN108
and ESN310.
It has 2 Gigabit Ethernet uplink ports, and can be managed through PEM.
The ELN220 can be used as an embedded node in an EAN and is then
connected to the optical uplink port-25 of the ECN320. The main purpose is
to support small remote sites through fiber optical connections.
The scenario is illustrated below in Figure 19 on page 29.
Figure 18 Ethernet Switch (24 optical ports - ELN220)
The purpose of the ELN220 switch is to support small remote sites through
fiber optical connections. The ELN220 switch has 24 optical ports, which
can be connected to the optical uplink port of the 8-port ESN108 switch.
This means that up to 24 ESN108 switches can be connected to the
ELN220, thus making it possible to support up to 24x8x12=2304 remote
end-users.
As indicated by the illustration in Figure 19 on page 29 the 12-line IP
DSLAM EDN312 is used in this scenario. The ECN320 has 24 downlink
ports, which can be connected to for example 24 12-lines IP DSLAMs
locally and thus the total supported end-users will be extended with 288
local end-users.