Amazon.com Widgets

February 22, 2012

The Many Faces of Link Aggregation

many faces of LAG

If any technology in networking  had identity issues, it would have to be Link Aggregation.   This simple process can never seem to make up its mind what it wants to be called. Link aggregation is the process of combining two or more connections into a larger pipe to allow for more throughput. If you [...]

Meet the ARP Family – ARP, inARP, GARP and RARP

what is ARP

What is ARP? ARP or Address Resolution Protocol is a simple communications protocol used primarily today in IP and Ethernet networks.  It’s main purpose is to discover and associate IP addresses to physical MAC hardware addresses. How does ARP work? When a computer needs to send data across a network to another physical device, it [...]

Mobile TFTP Server for the Data Center

Andy-Salo-photo-small

by Andy Salo Have you ever been in the data center, or out in some remote wiring closet, and realized you need a router config from your TFTP Server and can’t access it? Many people don’t want to leave a TFTP Server continually running on their network since it is not secure and it opens them [...]

Using PING to Troubleshoot Network Problems

One Single Ping

Problem Diagnosis With Ping By Steve Waddington The two most used tools, and almost always the first used to diagnose a network problem are traceroute and ping. The results they return are however most often misunderstood or interpreted in a way that leads to an incorrect conclusion. Let’s take the ping utility specifically. The common [...]

Supported Cisco Commands Can Vary Depending on the Version of Software In Use.

Cisco commands can be very frustrating

It’s time to vent some frustration everybody!! If you have worked on Cisco devices for any length of time, or even if you have just started work with Cisco routers, you know that the Cisco command line interface can be a frustrating thing. The consistency of the syntax of a given command can vary significantly from platform [...]