Linksys LGS308 User Manual page 51

Protected Port—Select to make this a protected port. (A protected port
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is also referred to as a Private VLAN Edge.)
Features of a protected port:
Protected Ports provide Layer 2 isolation between interfaces
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(Ethernet ports and LAGs) that share the same VLAN.
Packets received from protected ports can be forwarded only
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to unprotected egress ports. Protected port filtering rules are
also applied to packets that are forwarded by software, such as
snooping applications.
Port protection is not subject to VLAN membership. Devices
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connected to protected ports are not allowed to communicate
with each other, even if they are members of the same VLAN.
Both ports and LAGs can be defined as protected or
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unprotected.
Protected LAGs are described in the LAGs section.
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Auto Negotiation—Select to enable auto-negotiation on the port. Auto
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negotiation enables a port to advertise its transmission speed, duplex
mode, and flow control abilities to the port link partner.
Port Speed—Port type determines available speeds. You can designate
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this field only when port Auto Negotiation is disabled.
Duplex Mode—Select the port duplex mode. This field is configurable
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only when Auto Negotiation is disabled, and the port speed is set to
10M or 100M. At port speed of 1G, the mode is always full duplex.
Half—The interface supports transmission between the device
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and the client in only one direction at a time.
Full—The interface supports transmission between the device
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and the client in both directions simultaneously.
Auto Advertisement—Select the capabilities advertised by Auto
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Negotiation when it is enabled.
Max Capability—All port speeds and duplex mode settings can
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be accepted.
10 Full Duplex—10 Mbps speed and Full Duplex mode.
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10 Half Duplex—10 Mbps speed and Half Duplex mode.
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100 Full Duplex—100 Mbps speed and Full Duplex mode.
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100 Half Duplex—100 Mbps speed and Half Duplex mode.
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1000 Full Duplex—1000 Mbps speed and Full Duplex mode.
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