Cabletron Systems CSX400 Desired Operational Mode, Advertised Abilities, Remote Capabilities

Bridging

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-100TXAuto-Negotiation, 10Base-T, 10Base-T Full Duplex, 100Base-TX, and 100Base-TX Full Duplex.

FE-100FX100Base-FX and 100Base-FX Full Duplex

See Setting the Desired Operational Mode for the FE-100TXand 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.

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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.

4-72 Fast Ethernet Port Configuration