networking

August 6, 2018

Amazon VPC Basics

For the past five weeks we have been getting deep in our Scalable Solutions series.  At Entasis we work with our customers to help them build solutions that are Scalable in design, Resilient by nature, with Performance on demand.  We feel that these three components are the pillars that all truly scalable solutions are built with.  Here is what we have gone over thus far: […]
December 8, 2014

Solaris 11: Configure IP Over Infiniband Devices

In this article we will be going over the configuration of an infiniband interface with the IPoIB protocol on Solaris 11, specifically Solaris 11.2 (previous versions of Solaris 11 should work the same, however there have been changes in the ipadm and dladm commands). Identify Infiniband Datalinks First we need to identify the underlying interfaces of the infiniband interfaces.  In my case net2 and net3. […]
October 27, 2014

Linux KVM: Bridging a Bond on CentOS 6.5

Today we are going to hop back into the KVM fray, and take a  look at using CentOS as a hypervisor., and configuring very resilient network connections to support our guests.  Of course these instructions should be valid on Red Hat Linux and Oracle Linux as well, though there is a little more to be done around getting access to the repos on those distributions… […]
May 19, 2014

Solaris Networking: Datalink Multipathing Protocol

In this article we are going to go over Datalink Multipathing Protocol (DLMP) available in Solaris.  DLMP is similar to IPMP, however there are some key differences, the biggest being the layer at which it operates.  DLMP operates at the datalink layer of the OSI model, while IPMP operates at the network layer.  Due to the differences in those layers DLMP opens up a lot […]
September 10, 2013

Solaris Networking: IP Multipathing Protocol

In this article we are going to go over some basics of using IPMP in Solaris.  We will discuss this on the latest versions of Solaris 10 and 11 on the SPARC platform, these instructions should also work on the x86 platform, but will be dependent on the listed version numbers, as the networking stack has changed alot of the past few minor versions of […]
July 16, 2013

Powerconnect: Configure Link Aggregation Groups

Today we will be configuring LACP to interconnect some switch stacks as part of a network upgrade.  Please keep in mind that part of configuring the LAG will result in the ports losing connectivity, so while it is not necessary to use a console cable, please keep in mind how you are connecting to the switch and if you will interrupt that connection by any […]
July 10, 2013

Dell Powerconnect 3500: Enable SSH and Disable Telnet

Most modern switches include the ability to use SSH as a remote communications protocol.  Here we will enable that functionality and disable telnet on the Dell Powerconnect 3548 switches. Enable SSH In order to enable SSH we need to generate the keys which will be used by SSH to encrypt the traffic. Disable Telnet Depending on your config you might not need to disable this, […]
July 9, 2013

Dell Powerconnect 5500: Enable SSH and Disable Telnet

Most modern switches include the ability to use SSH as a remote communications protocol.  Here we will enable that functionality and disable telnet on the Dell Powerconnect 5548 switches. Enable SSH In order to enable SSH we need to generate the keys which will be used by SSH to encrypt the traffic. Disable Telnet Depending on your config you might not need to disable this, […]
July 8, 2013

Dell Powerconnect 6200: Enable SSH and Disable Telnet

Most modern switches include the ability to use SSH as a remote communications protocol.  Here we will enable that functionality and disable telnet on the Dell Powerconnect 6248 switches. Enable SSH In order to enable SSH we need to generate the keys which will be used by SSH to encrypt the traffic. Disable Telnet Depending on your config you might not need to disable this, […]
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