When I connected my new ProCurve Series 4100GL switch to my ProCurve Switch 4000M using a Gigabit-SX or Gigabit-LX connection, the link did not come up. Why not?
The ProCurve Gigabit-SX module used in the ProCurve Switch 4000M, 8000M, 1600M, 2424M and 2400M is set by factory-default to “1000 Fdx” whereas the factory-default setting for the ProCurve Networking Gigabit-SX transceiver used in the ProCurve Series 4100GL switch is “Auto”. The configuration must be set to match on both ends to provide Gigabit connectivity.
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