Description of the EAN
1553-CNH 160 0787 Uen PA2 2005-09-23
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EDA Management VLAN
Ethernet
Access Domain
ESN310
Domain Server
Legend:
Ethernet connection
ADSL connection
ECN
ESN108 ESN108
ECN
Ethernet Access Node
EAN VLAN
Topology
&
Inventory
NCM
NNM
Status
Manager
+
Alarms
2
nd
level
Aggregation Switch
Ethernet Access Node
EAN VLAN
Figure 11 The Ethernet Access Node in the Network
6.1.1 EAN Topologies
The following sections describe a series of topology scenarios supported in
this release of the EDA system.
In
Figure 12 on page 31 the topologies based on ELN220 is illustrated.
The Ethernet Access Node (EAN) can be composed of an ECN with any of
the configuration 1 to 6 connected to the downlink ports.
Furthermore up to three of the 24-port optical switch ELN220 can be con-
nected to the optical port 25 or 26 of the ECN. This is also called switch-
extension, daisy chaining or switch stacking and is configured by the Com-
mand Line Interface (CLI) of the ECN. The switches are connected through
the uplink ports. The first switch is connected to one of the uplink ports on
the ECN that is either port 25 or 26. Port 27 on ECN330 must not be used.
In order to add the ELN220 switch it must be configured with the correct IP
address, internal management VLAN and with VLAN transparency. Other
configuration is also necessary: SNMP alarm receiver, alarm type, NTP
server. When the first switch-extension is added, the VLAN configuration of
the specified uplink port on the ECN switch will be changed in order to al-
low traffic on the internal VLAN instead of public, external or managed
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