Cabletron Systems 6SSRM-02, Installation & User Manual

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Hardware Overview
Introduction 1-21
1000BASE-LLX (70KM)
The 1000BASE-LLX line card supports a single port and contains 16 MB of memory. Advanced
optical drivers have been added to the existing SSR Gigabit line cards to increase distance support
to between 15 and 70 Km over 10 um Single Mode Fiber. Use the 1000 BASE-LX module for
distances less than 5 Km.
Figure 1-6 shows the front panel of the 1000BASE-LLX line card.
Per-port Rx • Green – indicates when the port’s transceiver receives
packets.
• Orange – indicates when the port’s transceiver receives
flow-control packets.
Per-port Tx • Green – indicates when the port’s transceiver transmits
packets.
• Orange – indicates when the port’s transceiver transmits
flow-control packets.
Per-port AN • Green – indicates that the line card is autonegotiating the
operating mode of the link between full-duplex and
half-duplex.
• Orange (intermittent) – indicates that autonegotiation is in
process.
• Orange (solid) – indicates a problem with autonegotiation
configuration.
• Red – indicates an autonegotiation failure. This fault may
occur if the link partner does not support full duplex.
• Off – indicates that autonegotiation has been disabled or
the link is down.
Table 1-10 1000BASE-LX Line Card LEDs (Continued)
LED Description