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Can't change the duplex settings on the SFP modules for the ISG devices

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Article ID: KB17834 KB Last Updated: 20 Mar 2012Version: 2.0
Summary:
The SFP 2 and 4 port modules have the duplex hardcoded to 1000MB for both Fiber and Copper GBICs.
Symptoms:
Need to lower the duplex settings on the copper or fiber GBIC 2 or 4 port SFP cards

nsisg2000-> set int e2/1 phy full 100mb
^-------unknown keyword full



Solution:
The 2 and 4 port SFP modules for the ISG devices are hardcoded to 1000MB, and this cannot be changed. You can set manual or auto negotiation but cannot lower the duplex setting.

Example:
In this example e2/1 is a 4 port mini GBIC SFP card, and e1/1 is an 8 port 10/100 card.
nsisg2000-> set int e2/1 phy ?
auto auto negotiation
holddown holddown time
link-down bring down link
manual manual mode

nsisg2000-> set int e1/1 phy ?
auto auto negotiation
full force full duplex
half force half duplex
holddown holddown time
link-down bring down link

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