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MediaRack Modular Switch System
3
S
C
WITCH
ONFIGURATION
This section explains the configuration of VLAN,
flow control, port speed, and duplex mode setting.
Virtual Local Area Networking (VLAN) enables
efficient
traffic
separation,
provides
better
bandwidth
utilization,
and
alleviates
scaling
issues by logically segmenting the physical LAN
so that packets are switched only between ports
within the same VLAN. This also creates secure
segments within the existing network. Nodes
residing in different VLAN segments cannot
communicate with each other although they are
connected to the same switch. The resulting
security is yet another reason to use VLAN.
Auto-negotiation adjusts the speed and the
duplex mode of each port, based on the
capability of connected devices. Flow control (or
back pressure) regulates transmission between
two nodes running at different speeds or duplex
modes. Auto-negotiation and flow-control may
need to be disabled for some operations involving
legacy equipment. Disabling the auto-negotiation
is accomplished by fixing the speed or duplex
mode of a port. Disabling of flow control is also
performed on an individual port basis.
Switch Configuration
15
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