User guide

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 1
st
level aggregation
Ethernet switches (ESN108 and ESN310) with integrated Power over
Ethernet functionality for powering the IP DSLAMs, and one 2
nd
level optical
aggregation Ethernet switch (ELN220).
The ESN108 Switch
For small sites in areas with low subscriber density the EDA Ethernet
switch, ESN108, fits very well, see Figure 16 on page 27.
The modularity of the switch is optimal for small sites with up to 96 lines
and thus fits perfectly with a small pre-cables solution containing eight 12-
port IP DSLAMs and one ESN108 aggregation switch for traffic uplink, see
section 4.7 on page 37.
The switch offers 8-ports 100 Mbps Fast Ethernet downlink and 1 optical
100/1000Mbps Mbps aggregate (uplink) port. It has built in Power over
Ethernet (PoE) used for distributing the power to the connected IP DSLAM
through the downlink ports.
The ESN108 offers multicast loading of IP DSLAM software and multicast
video streaming by use of IGMP snooping. Listening to Internet Group
Management Protocol (IGMP) messages it builds mapping tables and
associates forwarding filters. It dynamically configures the switch ports to
forward multicast traffic only to those ports associated with multicast hosts.
The switch also offers port mapping filtering and is transparent for VLAN
IDs. It is managed by the Public Ethernet Manager (PEM).