Tutorial Category

Networking Tools

  1. BGP for IPv6 - iBGP Full Mesh

    By Algert Gjeka tagged in BGP,BGP for IPv6,debug,Full Mesh,iBGP,IPv6,Router
    Introduction to BGP IPv6 In this tutorial I will be configuring the BGP for IPv6 router iBGP Full Mesh.  I will start off with the baseline show command, “show BGP IPv6, unicast summary” to display general information about IPv6 BGP neighbors. Then I am going to enable a debug command “debug BGP IPv6 unicast” to see how things unfold as I configure the BGP for IPv6 router iBGP Full Mesh. Finish with the same baseline command, “show BGP IPv6 unicast summary” to see what changed. Let’s look at the network topology. I will be configuring the BGP...
  2. How To Use wget For Recursive FTP

    We have found that using wget to recursively grab FTP contents is useful in the following situation: You cannot use rsync or scp due to restricted or no shell access on the remote server You need to recursively get directories and globbing with mget * isn't working as expected Transferring files to an intermediate workstation first is not feasible due to time/filesize constraints If all of these apply to you, then a recursive wget via FTP is probably...
  3. How To Use DD Over Netcat Vs SSH

    dd is a very handy shell command for writing raw data blocks from one place to another. Since it can read directly from raw device files, it is very useful for copying entire partitions or drives from one location to another. One traditional way to get this drive data from one location to another is to pipe DD's output stream over SSH to a shell on a remote machine which in turn uses dd to pipe it to...
  4. How To Install IOTop On CentOS 5

    Iotop is a Python program with a top like UI used to show of behalf of which process is the I/O going on. This can come in handy for administrators trying to track down a specific process that may be causing a disk I/O bottleneck. Pre-Requisites IOTop uses features that are a part of a newer kernel build than what CentOS ships with, so you must upgrade your kernel to at least 2.6.20. The process of doing so is outside of the scope of this article; guides can...