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Managing the Hub 2-35
The SmartSwitch 2000 Chassis View
Port Type
Displays the portÕs type: FE-100TX (for the FE-100TX Fast Ethernet port module),
FE-100FX (for the FE-100FX Fast Ethernet port module), or Unknown (for a port
slot with no module installed).
Link State
Displays the current connection status of the selected port: Link or No Link.
Current Operational Mode
Indicates which of the available operational modes is currently in effect: 10Base-T,
10Base-T Full Duplex, 100Base-TX, 100Base-TX Full Duplex, 100Base-FX, or
100Base-FX Full Duplex. If the port is still initializing, not linked, or if there is no
port module installed in the slot, this Þeld will remain blank.
Desired Operational Mode
Displays the operational mode that you have selected for this port, and allows
you to change that selection. The following operational modes are available for
each port:
100Base-TX Auto Negotiation, 10Base-T, 10BASE-T Full Duplex,
100Base-TX, and 100Base-TX Full Duplex.
100Base-FX 100Base-FX and 100Base-FX Full Duplex
Note that if Auto Negotiation is the selected mode, the Current Operational
Mode Þeld will indicate which mode was selected by the link partners.
See Setting the Desired Operational Mode, on page 2-36, for more information.
Advertised Abilities
For 100Base-TX ports which have been conÞgured to operate in Auto Negotiation
mode, this Þeld allows you to select which of the operational modes available to
the port can be selected by the negotiating link partners. During Auto
Negotiation, each of the link partners will advertise all selected modes in
descending bandwidth order: 100Base-TX Full Duplex, 100Base-TX, 10Base-T Full
Duplex, and 10Base-T. Of the selected abilities, the highest mode mutually
available will automatically be used. If there is no mode mutually advertised, no
link will be achieved.
!
CAUTION
If you choose to select a speciÞc mode of operation (rather than auto-negotiation), you
should be sure that the link partner supports the same mode. Otherwise, no link will be
achieved.
If you select a Full Duplex mode and the link partner supports the same wire speed but not
Full Duplex, a link will be achieved, but it will be unstable and will behave erratically.
If you select Auto-Negotiation, the local node will try to match the mode of the link
partner, even if the link partner is not set to auto-negotiate, and even if the local node
must use a mode which it is not currently advertising.