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Chapter 2 Applications
Avaya M770 M-ACCF/SF ATM Access Modules User’s Guide 31
Network Configuration Examples
This Section provides examples of possible network configurations using the
M-ACC module. If you are unfamiliar with ATM, see the Section, entitled Planning
Your Network.
ATM Backbone in the Building
An example of an ATM backbone within a single building, is shown in Figure 2.1.
In this case, the Ethernet Switch on each floor is provided with a high speed
(622 Mbps) full duplex link to the backbone. Using ATM as a backbone technology
removes bottlenecks by providing scalable bandwidth, low-latency, high-speed
data switching.
Ethernet VLANs can be extended into the ATM network using
Emulated LANs
(ELANs) . Ethernet packets are then switched between Ethernet to ATM
transparently.
As well as providing a fast switched backbone between Ethernet LANs, ATM
equipped file servers and services may be directly attached to the ATM network;
giving improved performance to the Ethernet desktop.
Further advantages are gained in multi-media applications, due to ATM’s built-in
quality of service.
Figure 2.1 shows ATM link redundancy between the M-ACC module in the
Avaya M770 multifunction and Avaya P550 switches and another Avaya M770
Switch.
The lowest Avaya M770 Multifuntion switch includes OC-3 and OC-12 M3-622 and
M15-155 ATM modules, an M-MLS Routing module and 32-port M32-100T Fast
Ethernet modules.