Cabletron Systems Expansion module 9H532-17, Руководство пользователя

Страница: 65 / 178

49
Local Management: Overview, Setup, and Navigation
• Disabled – full duplex flow control is off, causing the port to ignore received
PAUSE frames and does not allow the port to transmit PAUSE frames for any
speed connection.
• Auto-Negotiate – when supported, the maximum flow control capabilities of
the port are reflected in the PAUSE bits of the Auto-Negotiation registers. The
ports’ flow control operational state is determined by the results of Auto-
Negotiation. This option is not displayed if Auto-Negotiation is not supported
on this port.
To change the settings for full duplex flow control, see the next section.
Half Duplex Flow Control (Toggle)
Back pressure half duplex flow control is enabled when the port is set
On
, and
disabled when the port is set
Off
. To change the settings, see the next section.
Selecting and Changing Settings
A user can change any selectable or toggle fields (other than Advertised Ability)
using the following procedure:
1. Use the arrow keys to highlight the field to be changed.
2. Use the Space Bar or Backspace key to step or toggle through the selections.
3. Press ENTER when the desired selection is displayed.
4. Use the arrow keys to highlight the SAVE command at the bottom of the
screen. The selection is saved for that interface.
Setting the Advertised Ability
During normal operation, all front panel ports on the module auto-negotiate to
the highest speed possible. Under some circumstances, the Network
Administrator may want the port to advertise only some of the available modes
and not operate in other modes.
To set the advertised ability, proceed as follows:
1. Use the arrow keys to highlight the Advertised Ability field.
2. Use the Space Bar to select the desired mode.
3. Use the arrow keys to move to the Enabled/Disabled field.
4. Use the Space Bar to select Enabled or Disabled. Press ENTER.