Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 02-05-2004, 07:18 PM   #1
LQ Newbie
Registered: Feb 2004
Posts: 6

Rep: Reputation: 0
Optical Fibre unplug requires power cycle

Hi all,

The basic problem is that unplugging an optical fibre SC type connector from the NIC's in various hardware required a power cycle to regain connectivity.

This spans Debian, RH9 and RedHat Enterprize. It's over dual processor and single i686's, Dell and other generic boxes. Various NIC's including Intel based and Allied Telesyn. Both 1000BaseSX and 100BaseFX. Various switches of Cisco (3550) and some type of Dell.

I've tried the obvious ifup/ifdown/ifconfig and toying with the networking scripts. Restarting via this will not work after disconnection. Disconnection has to be > 5 seconds. I have no trouble when I test the WinTel boxes on site, they regain connectivity without interaction.

I've tried setting various duplexing and modes via mii-tool. The switches are normally set to 100BaseFX - full-duplex without autonegotiation for the 100Base connections.

I know that switches are set to shut down transmission to avoid eye-damage from the IR, but they usually restart, do NIC's have an equivalent setting to shutdown upon seeing daylight? Why do the WinTel's restart the card fine and the linux boxes require a power-cycle???



Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fibre channel ..... programming.... rajsun Programming 1 10-05-2005 04:18 PM
safe to unplug IDE/power cable from HD wuya Linux - Hardware 5 04-27-2005 02:06 PM
Unplug power frezes computer short101 Linux - Laptop and Netbook 1 07-21-2004 03:59 AM
Optical Fibre unplug requires power cycle mehere Linux - Networking 3 02-05-2004 08:10 PM
Fibre NIC (FX) unplug requires power cycle mehere Linux - Networking 0 02-05-2004 06:40 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 04:18 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration