TE 04-0295, Rev. A
The following products that use TDK's PHY chip.
C82391*, C12C82402*, C12C82405*, EPSON Network Image Express Card
Compatibility of Cisco Catalyst 3560/3750/4500/6500 Series Switches/Hubs
This bulletin was created to provide information concerning Cisco HUB/Switch products
(including Network modules) and EPSON Print Servers that experience link problems
when directly connected.
There is a limitation of the TDK chip to recognize the First-Link-Pulse (FLP) in Auto
Negotiation. The Cisco products use PoE** (Cisco Inline Power). When PoE and FLP are
in use, Auto Negotiation cannot be established therefore a link cannot be established
between the Switch/ HUB and the Print Server.
** PoE (Power over Ethernet): This technology provides power over the Ethernet cable
Auto Negotiation cannot be used in either the Switch/HUB or the Print Server
because the Print Server uses link speed settings with Half or Full duplex on the
Switch/HUB or Print Server.
1.) Disable the Cisco Inline Power on the Cisco Products HUB/Switch.
The Cisco Inline Power is unnecessary for EPSON products Print Servers. The
Epson products are provided power from either the printer slot or an AC Power
2.) Connect another Switch/HUB between the Cisco product HUB/Switch and EPSON
Target Products from Cisco:
In the product matrix noted below where the "OK" is designated for the model of the
Cisco Inline Power product, there is a possibility that the link problem will occur.
However, when IEEE802.3af is used in the same product, it is possible that the problem
will not occur.
** The following list only corresponds to the Cisco Inline Power products.
** Also, the following list is comprised of currently selling products.
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