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Overview 1-5
LEDs
LEDs
The PA-FE-TX and the PA-FE-FX have an enabled LED, standard on all port adapters, and a bank
of three status LEDs for the ports. After system initialization, the enabled LED goes on to indicate
that the PA-FE has been enabled for operation. (The LEDs are shown in Figure 1-7.)
Figure 1-7 LEDs on the PA-FE Port Adapter—Partial Faceplate View of PA-FE-TX
The following conditions must be met before the enabled LED goes on:
• The PA-FE is correctly connected and receiving power.
• The FE-equipped card or chassis contains a valid microcode version that has been downloaded
successfully.
• The bus recognizes the PA-FE port adapter or PA-FE-equipped VIP2.
If any of these conditions is not met, or if the initialization fails for other reasons, the enabled LED
does not go on.
Following are the three status LEDs and an explanation of what each indicates:
• MII—On when the MII port is selected as the active port by the controller.
• Link—When the RJ-45 or SC port is active, this LED is on when the port adapter is receiving a
carrier signal from the network. When the MII port is active, this LED is an indication of network
activity, and it flickers on and off proportionally to this activity.
• RJ-45 (or FIBER on PA-FE-FX)—On when the RJ-45 (or FIBER) port is selected as the active
port by the controller.
Either the MII LED or the RJ-45 (or FIBER) LED should be on at any one time; never both.
Receptacles, Cables, and Pinouts
Each Fast Ethernet port on the PA-FE-TX has an RJ-45 connector to attach to Category 5 unshielded
twisted-pair (UTP) for 100BaseTX, and a MII connector that permits connection through external
transceivers to multimode fiber for 100BaseFX, or to Category 3, 4, and 5 UTP or foil twisted-pair
(FTP) for 100BaseT4 physical media. Only one connector can be used at one time. The RJ-45
connection does not require an external transceiver. The MII connection (a 40-pin, D-shell type
connector) requires an external physical sublayer (PHY) and an external transceiver.
Each Fast Ethernet port on the PA-FE-FX port adapter has an SC-type fiber-optic connector for
100BaseFX, and an MII connector that permits connection through external transceivers to
multimode fiber for 100BaseFX, or to Category 3, 4, and 5 UTP or STP for 100BaseT4 physical
media. Only one connector can be used at one time. The MII connection (a 40-pin, D-shell type
connector) requires an external physical sublayer (PHY) and an external transceiver.
H4710