The service attributes are also shown in the figure.
Dedicated Internet Access (DIA) Dedicated Internet access enables subscribers to have
a high-speed connection to the Internet to support their business objectives. An EVC
can connect the subscriber??™s site to the local point-of presence (POP) of the Internet
service provider (ISP) using a Point-to-Point E-LINE service.
If a customer is homed to multiple (say two) ISPs, as shown in the Figure 2.16, then
a separate E-LINE would be used to connect each ISP. If the same UNI is expected to
provide Internet access and other services, then a separate EVC would be used for each
of the services.
At the ISP, service multiplexing is typically employed over a high-speed UNI to support
multiple subscribers, so in effect, each subscriber appears to have a dedicated connection
Figure 2.15 LAN extension service using E-LINE service type (Source: MEF)
UNI Service
Attribute
Physical Medium
Speed
Mode
IEEE 802.3??“2002 Physical Interface
10 Mbps (all UNIs)
FDX Fixed Speed (all UNIs)
MAC Layer IEEE 802.3??“2002
Service Multiplexing No
CE??“VLAN ID/EVC Map All CE-VLAN IDs Map to the Single EVC
Bundling No
All to One Bundling Yes
Ingress
Bandwidth Profile
Per Ingress UNI
Layer 2 Control
Protocol Processing
All UNIs:
CIR = 5 Mbps, CBS = 256 KB,
EIR = 10 Mbps, EBS = 512 KB
Process IEEE 802.
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