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• Data and Technology

  Posted on February 16th, 2007

  Written by cliff

  Tags

  autoneg, autonegoation, commands, ethtool, hardware, ifconfig, link, link speed, linux, linux commands, rhel, RHEL commands, sysadmin, systems administration

  IFCONFIG Does Not give You Link Status; ETHTOOL Does

  For some reason that is a complete mystery to me, RHEL does not give you the link status when you run # ifconfig -a. This makes it incredibly hard to debug link integrity issues! Buried amongst all of Red Hat’s proprietary commands, however, is a utility called ethtool, which does give you the status of [...]

• Data and Technology

  Posted on November 22nd, 2005

  Written by cliff

  Tags

  broadcast, eri0, HowTo, ifconfig, ifconfig plumb, ipv4, netmask, nic, plumb, solaris, sun, systems administration, virtual interface, virtual network interface

  Solaris Virtual Network Interfaces

  Sometimes it’s useful to create a virtual network interface on your Solaris box, so that you can associate multiple IP addresses with the same host and not have to go through all the trouble of buying another NIC.
  Here’s a quick HOWTO. Let’s assume our network card is eri0, and we want to create a virtual [...]

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