Digital Equipment DLE49-MA, Руководство пользователя

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Ethernet Port Configuration Screen
DLE49-MA User’s Guide 6-39
in the setting displayed. To choose the Default Duplex, refer to
Section 6.12.1 .
Auto-Negotiation State (Toggle)
Determines whether Auto-Negotiation is Enabled or Disabled for the
specific port. During auto-negotiation, the port “tells” the device at the
other end of the segment what its capabilities are. If Auto-Negotiation is
disabled, the port reverts to the speed, duplex and flow control settings
specified by Default Speed, Default Duplex, Half Duplex Flow Control
and Full Duplex Flow Control fields respectively. To choose the
Auto-Negotiation State, refer to
Section 6.12.1 .
Advertised Ability (Selectable)
In normal operation, with all capabilities enabled, the port “advertises”
that it has the ability to operate in any mode. The user may choose to set
up the port so that only a portion of the available capabilities are
advertised and the others are disabled. The left field displays the
advertised ability of the port, but only becomes active on ports that have
Auto-Negotiation enabled. The status of a particular ability is displayed in
the right field. The “T” in an ability stands for twisted pair. Possible
abilities for ports 1 through 48 are:
• 10Base-T– 10 Mbps operation
• 10Base-TFD – 10 Mbps full duplex operation, effectively 20 Mbps
Port 49 may have more options, depending on the type of HSIM
installed. The possible abilities for port 49 are:
• 10Base-T– 10 Mbps operation
• 10Base-TFD – 10 Mbps full duplex operation, effectively 20 Mbps
• 100Base-TX – 100 Mbps operation
• 100Base-TXFD – 100 Mbps full duplex operation, effectively
200 Mbps
• 1000Base-X,1000Base-SX, 1000Base-CX, 1000Base-LX, Gigabit
Ethernet
• 1000Base-XFD, 1000Base-TFD – Full Duplex Gigabit Ethernet
• FDX PAUSE – displays for 100 Mbps port only, indicating that the
port will recognize the 802.3x function