Posts Tagged ‘ eth ’

Debian eth0, eth1, eth2, in Virtualbox or VMware Virtual machines when copying

uses udev. Udev handles mapping MAC’s to the appropriate //(X) file. If you copy a Virtual machine, Udev will remember the MAC address of the old NIC. When you copy the machine, the virtual host usually generates a new MAC address for the .
Udev will assign the new Device to eth1, eth2, and so on. If you want to change your NIC assignments make Udev forget the old MAC.
In Debian 5 (lenny) it is in this file:

/etc/udev/rules.d/70-persistent-net.rules

In Debian 4 (etch) it is in this file:

/etc/udev/rules.d/z25_persistent-net.rules

To apply changes in Lenny: “udevadm trigger” or “udevtrigger” (in Etch)

2009
11/13
CATEGORY
Debian Etch
Networking
TAGS


2 comments

Linux command line bandwidth monitor

You can find out how much your machine is using with a simple tool called “bwm-ng”. In , install it with

aptitude install bwm-ng

Then, just type ‘bwm-ng’ in the command line. It will give you something like this:

bwm-ng v0.6 (probing every 5.000s), press 'h' for help
  input: /proc/net/ type: rate
  -                            Rx                   Tx                Total
  ==============================================================================
               lo:           0.00 KB/s            0.00 KB/s            0.00 KB/s
             0:        2221.47 KB/s           48.13 KB/s         2269.60 KB/s
  ------------------------------------------------------------------------------
            total:        2221.47 KB/s           48.13 KB/s         2269.60 KB/s

Pressing the “h” key while it is running wil actually pull up a nice menu to change some of the options you are looking at.

bwm-ng is very basic, “iptraf” is another tool that provides some more functionality if you want to drill further into what is moving in and out of your box.

2009
07/29
CATEGORY
Linux
TAGS





Write comment