Unlike IPv4, which uses DHCP for configuration, IPv6 uses the Neighbor Discovery Protocol to configure addresses and gateways. Unfortunately, originally the protocol had no means of providing addresses of DNS servers to clients, making it necessary to use DHCPv6 for that purpose. Modern Linux and Mac OS X machines are …
Here's how to make dynamic IPv6 routing work between a Cisco IOS router and an OpenWRT Linux Quagga router. I couldn't find a similar howto anywhere, so I decided to write my own.
I am using OpenWRT Kamikaze 7.09 (kernel 2.4) on an ASUS WL-500gP wireless router. Any …
Network interfaces can be bonded to provide fault-tolerant operation. Here's how to do it in Ubuntu. I will assume the interfaces to be bonded are eth0 and eth1.
First, install the ifenslave package. The ifenslave tool will be used to actually bond the interfaces.
apt-get install ifenslave
Create file /etc …
A backup server was saturating the DSL links of remote offices every time the backups were running. To prevent this, I had to limit the incoming bandwidth of the TCP-connections that were used to back up the remote hosts, but not touch the ones that were used to connect to …
I had a chance to configure an HP ProCurve 4208vl switch the other day. The first impression was that the command line interface is heavily influenced by, if not directly copied from, the Cisco IOS command line interface. So if you have experience with IOS, you will probably feel almost …
When my Linux firewall box died a couple of months ago, I finally decided to by a Cisco router for my Internet connection. Before the Linux box I had an OpenBSD firewall, and I decided it was time to learn yet another platform.
The box is a Cisco 877W which …
