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4-72 Fast Ethernet Port Configuration
Desired Operational Mode
Displays the operational mode that you want to conÞgure for this port. The
following operational modes are available for each port:
FE-100TX Auto-Negotiation, 10Base-T, 10Base-T Full Duplex,
100Base-TX, and 100Base-TX Full Duplex.
FE-100FX 100Base-FX and 100Base-FX Full Duplex
See Setting the Desired Operational Mode for the FE-100TX and Setting the
Desired Operational Mode for the FE-100FX, following, for more information.
Advertised Abilities
This Þeld works in conjunction with auto-negotiation on FE-100TX ports. During
auto-negotiation, the local hardware 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 available on the port on the other side
of the connection will automatically be used. The Advertised Abilities will only be
used when auto-negotiation is enabled.
Remote Capabilities
This Þeld displays the advertised abilities of the remote hardware at the other end
of the link from the FE-100TX port. Again, possible advertised abilities by the
remote partner include 10Base-T, 10Base-T Full Duplex, 100Base-TX, or
100Base-TX Full Duplex.
If auto-negotiation is not enabled or supported at either the local or remote
interface, or if there is no active link, all entries in this Þeld will be grayed out.
NOTE
Auto-negotiation is not available on the FE-100FX; therefore, the Advertised Abilities
and Remote Capabilities section of the Fast Ethernet ConÞguration window will be
grayed out when you are viewing the port conÞguration of an FE-100FX.
!
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.