Cabletron Systems ELS10-26TX Manual De Usuario

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1-8
Introduction
 
network and when it is granted permission to transmit. In 
addition, full store and forward switching ensures data integrity, 
thus preventing network error conditions from being generated 
throughout the network.
 
Discarding Local Traffic
 
The SmartSTACK 10 ELS10-26 checks all incoming packets for 
their destination address against the Bridge Address Table. If a 
packet’s destination address is not on the same network segment 
as the originating packet, the SmartSTACK 10 ELS10-26 forwards 
the packet to the network segment associated with that destination 
address, if known. However, if the packet’s source and destination 
address are on the same network segment, known as 
 
local traffic
 
the packet is automatically discarded (i.e., ignored by the 
SmartSTACK 10 ELS10-26).
For example, a file transmitted from Workstation A to Workstation 
C in Figure 1-3 does not need to leave LAN 1. The SmartSTACK 10 
ELS10-26 connected to LANs 1 and 2 sees all traffic from LAN 1, 
including LAN 1 local traffic.
 
Figure 1-3.  Typical Switching Application
LAN 1
LAN 2
A
B
C
FastNet 10
ELS10-26