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05.06.2008 at 08:27AM PDT, ID: 23379782
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Change hme NIC duplex to full

Asked by jonathen in Sun Solaris

Tags: , ,

Hi experts,

I have a Solaris 8 box that since a board failure and replacement, is running the hme1 nic at half-duplex. As my switches run full-duplex, this is causing problems with collisions, as you can imagine. I have modified my /etc/system to disable half-duplex, but I cannot reboot this server as it's a mission-critical box. Therefore, I can also add the following commands on the fly so to speak.

I have 2 questions:

1. A sanity check - are my commands definitely correct? I want to disable half-duplex and auto on all hme devices (there's only 1) and force full-duplex.
2. If I enter these commands on the fly, will it affect my system momentarily? I run an application on Windows that connects to the database on the Solaris system using sockets, so I cannot lose connectivity AT ALL - not even for a second. So if these commands are going to freeze the NIC or drop it, I need to know. In which case I will do this at 3am rather than during the day.

Thanks

JonStart Free Trial 
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ndd -set /dev/hme instance 1
ndd -set /dev/hme adv_100fdx_cap 1
ndd -set /dev/hme adv_100hdx_cap 0
ndd -set /dev/hme adv_10fdx_cap 0
ndd -set /dev/hme adv_10hdx_cap 0
ndd -set /dev/hme adv_autoneg_cap 0
[+][-]05.06.2008 at 08:38AM PDT, ID: 21508233

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[+][-]05.06.2008 at 08:43AM PDT, ID: 21508281

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[+][-]05.06.2008 at 08:46AM PDT, ID: 21508304

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[+][-]05.06.2008 at 08:46AM PDT, ID: 21508308

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[+][-]05.06.2008 at 08:48AM PDT, ID: 21508334

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[+][-]05.06.2008 at 08:53AM PDT, ID: 21508377

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[+][-]05.06.2008 at 08:54AM PDT, ID: 21508382

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[+][-]05.06.2008 at 09:16AM PDT, ID: 21508574

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About this solution

Zone: Sun Solaris
Tags: solaris 8, full duplex, ndd
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Solution Provided By: blu
Participating Experts: 2
Solution Grade: A
 
 
 
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