Allied Telesis AT-S62 - Manual (Page 100)

Chapter 6: Port Parameters
Section I: Basic Operations 100
The problem with broadcast frames is that too many of them
traversing a network can impact network performance. The more
bandwidth consumed by broadcast frames, the less available for
unicast frames.
Should the performance of your network be impacted by heavy
broadcast traffic, you can use this parameter to limit the number
of broadcast frames forwarded by the switch and so limit the
number of broadcast frames on your network.
When you activate this feature on a port, the port will discard all
egress broadcast packets. When the port has a broadcast packet
that is intended to be sent to the end node connected to the port,
the port will instead discard the packet.
It should be noted that the filtering takes place only on egress
broadcast packets—packets that a port is transmitting. This filter
does not apply to ingress broadcast packets.
Possible settings for this parameter are:
Enabled The port will discard all egress broadcast frames.
Disabled The port will transmit egress broadcast frames. This
is the default setting.
3 - MDI/MDIX Crossover
You use this selection to set the wiring configuration of the port.
The configuration can be Auto, MDI, or MDI-X. The default setting
is Auto.
The default Auto setting activates the auto-MDI/MDI-X feature on
a port, which enables a port to configure itself automatically as
MDI or MDI-X when connected to an end node. This allows you to
use a straight-through twisted pair cable when connecting any
type of network device to a port on the switch.
The Auto setting is only available when a port is set to Auto-
Negotiate its speed and duplex mode. It is also the only setting
available when a port’s speed and duplex are set through Auto-
Negotiation.
The auto-MDI/MDI-X feature is not available if you disable Auto-
Negotiation on a port and set a port’s speed and duplex mode
manually. A port where Auto-Negotiation has been disabled
defaults to MDI-X. Disabling Auto-Negotiation may require that
you manually configure a port’s MDI/MDI-X setting using this
option or use a crossover cable.
4 - Negotiation
You use this selection to configure a port for Auto-Negotiation or
to manually set a port’s speed and duplex mode.