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SG135 with Intel X553 doesn't support half duplex mode?

Hi all

We have recently purchased a SG135 to replace an aging UTM 120 but are having issues connecting it to our incoming modem. The modem (supplied by the ISP) uses 100base T/Half and it appears the SG135 does not have this mode.

Can anyone else with an SG box and this model NIC please confirm if theirs supports half duplex.

Thanks very much.

Simon

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0 BAlfson over 7 years ago

Hi Simon,

Have you edited the NIC and unselected 'Auto negotiation'? I just checked two clients with 135.r1 and 100/Half is available on both. Which rev of SG 135 do you have? You can see that with the following at the command line: version|grep Hardware

Cheers - Bob
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0 Simon Boyd over 7 years ago in reply to BAlfson

Thanks Bob,

Yes, we unselected Auto Negotiation and the only options were all Full Duplex. Sophos support have since confirmed that this particular NIC (Intel X553) doesn't support half duplex. We have a 135 rev 3.

We have solved by putting a small 4 port unmanaged switch between the modem and UTM.

Cheers

Simon
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0 Argo over 7 years ago in reply to Simon Boyd

You may need to use a cross-over (never thought I would say this beyond 2001) cable for this older NIC.

seems people in the past had issues with this, and had odd results.
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0 Simon Boyd over 7 years ago in reply to Argo

Thanks, however we had tried a crossover cable and it didn't work either.
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0 Argo over 7 years ago in reply to Simon Boyd

I am curious why you would need to set the interface at half duplex, I thought that went out with the ark (so to speak)?
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0 Simon Boyd over 7 years ago in reply to Argo

Believe it or not but the ISP supplied router is set to half duplex and we can't convince them to change it!
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