3com 5101T-FB-FC Manuel D’Utilisation
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If you have IEEE 802.3 repeaters in your network,
ensure that the SQE Mode and Alternate Colli-
sion Mode switches are disabled for 10BASE-FB
Transceivers connected to these repeaters.
ensure that the SQE Mode and Alternate Colli-
sion Mode switches are disabled for 10BASE-FB
Transceivers connected to these repeaters.
Late Collisions and Failure to Defer
Late collisions can be caused by exceeding the
distance rules of Ethernet, or by controllers that
do not fully comply 100% with the IEEE standard.
distance rules of Ethernet, or by controllers that
do not fully comply 100% with the IEEE standard.
To verify that your network satisfies the distance
rules, refer to the configuration rules in:
rules, refer to the configuration rules in:
■
10BASE-FB Star Coupler Installation and
Operation Guide, Chapter 6
Operation Guide, Chapter 6
■
ONline or ONcore Ethernet 10BASE-FB
Module Installation Guide, Chapter 2
Module Installation Guide, Chapter 2
Activating the Alternate Collision Mode on the
Transceiver may solve this problem in many
cases.
Transceiver may solve this problem in many
cases.