Allied Telesis AT-GS920/16, Installation And User Manual

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GS920 Series Gigabit Ehternet Switch Installation and User’s Guide
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Multicast Frame
Pass-Through
The Multicast Frame Pass-Through function includes EAP, BPDU frame
types and others.
Note
When Multicast Frame Pass-Through is enabled, the Flooding
feature must be disabled.
This feature can be enabled or disabled by setting DIP switch # 1
(MULTICAST PASSTHRU). See “Multicast Frame Pass-Through” on
page 73 for the procedure to enable and disable this feature.
Energy Efficiency
Ethernet (EEE)
The GS920 Series switches support IEEE 802.3az Energy Efficiency
Ethernet (EEE) when the twisted pair ports are operating at a speed of
100Mbps or 1000Mbps. When EEE is enabled on the switch, the power
consumption to keep links at a these speeds is reduced during periods of
low data activity.
Note
When a GS920 Series switch is operating 10Mbps, EEE is not
supported.
This feature can be enabled or disabled by setting DIP switch # 2 (EEE).
See “Energy Efficiency Ethernet (EEE)” on page 76 for the procedure to
enable and disable this feature.
Loop Prevention
The GS920 Series switches support Loop Prevention. When a physical
network has more than one path between two endpoints, a network loop
occurs. This results is a broadcast storm which slows all other Ethernet
traffic on the network. With Loop Prevention enabled, the GS920 Series
switches blocks the specific switch port that is associated with the
excessive traffic.
Please refer to Appendix C, “Loop Prevention Feature” on page 109 for a
more detailed explanation of this feature,
Note
Flow Control must be disabled when Loop Prevention is enabled.
Loop Prevention is not supported when Flow Control is also
enabled.
This feature can be enabled or disabled by setting DIP switch # 3 (Loop).
See “Loop Prevention” on page 78 for the procedure to enable and disable
this feature.