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– Broadcast and Unknown Server (BUS): A BUS handles broadcast
data sent by a LAN emulation client, all multicast data, and data sent
by a LAN emulation client before the ATM address has been resolved.
Figure 7–1 shows an ATM network with two emulated LANs. Hosts A and B
are LECs on ELAN1. Hosts C, D, and E are LECs on ELAN2. The LECS, the
LES, and the BUS are server functions resident on the ATM switch (even
though they are shown separately).
Figure 7–1: Emulated LAN Over an ATM Network
Host A
Host B
Host D
ZK-1323U-AI
Host C
Host E
ATM Switch ATM Switch
ELAN 1
ELAN 2
LECS
LES
BUS
LECS
LES
BUS
Use LAN emulation over ATM in a TruCluster Server cluster for client
system access (Memory Channel is the cluster interconnect).
7.2 Installing ATM Adapters
_____________________ Warning _____________________
Some fiber optic equipment can emit laser light that can injure
your eyes. Never look into an optical fiber or connector port.
Always assume the cable is connected to a light source.
______________________ Note _______________________
Do not touch the ends of the fiber optics cable. The oils from your
skin can cause an optical power loss.
Preparing ATM Adapters 7–3