User guide

EDA System Design
100 1/1551-HSC 901 35/3 Uen C 2005-12-02
Four different VLANs are defined: One for system management traffic
(VLAN1), one for the voice access domain (VLAN2), and one for each of
the two data access domains (VLAN3, VLAN4). The IP DSLAMs map
between PVCs and VLANs (magnified to the right in Figure 62 on page
100). Between the IP DSLAMs and the top-level switch all VLANs are
present. At the top-level switch (magnified to the left in Figure 62 on page
100) the VLANs are mapped to physical ports, thereby controlling the
subscribers’ access to different Edge Nodes and preventing them in
accessing the Management System.
Figure 62 VLAN-based Scenario with Data Access Services and ToIP
Another way of using VLAN for service selection is by employing Super
VLAN technology. With this method a unique VLAN is provided to each
subscriber (or even to each PVC). Within the Edge Node a number of
Super VLANs are defined, and each subscriber VLAN is associated with
one of these Super VLANs. Each Super VLAN is associated to a certain
Service Provider. The Super VLAN is grouping subscribers associated with
this Service Provider.
The Edge Node creates tunnels between each Super VLAN and the
Service Provider’s PoP that is associated with the Super VLAN. A limitation
with Super VLAN is that the maximum number of VLANs in any broadcast
network is 4096.