Cisco interfaces and modules are a key component in a company's network infrastructure because they allow Cisco routers to work another company's equipment. The problem is that most companies, especially those that have grown over time, may have more than one network protocol or server vendor. In order to make various protocols and work together, network architects can employ Cisco interfaces to "translate" from one protocol to another and from Cisco modules to another company's modules.

One potentially confusing part about discussing Cisco interfaces and modules is that the term "Cisco module" and "Cisco interface" can refer to a number of different technologies including:

1. Cisco GBICs (Gigabit Interface Connectors)
2. Cisco SFPs (Small Form-Factor Pluggable Gigabit Interface Connectors)
3. Cisco universal broadband router line cards
4. Cisco router interfaces

This means that a discussion of any Cisco interfaces and modules or Cisco expansion modules covers a wide range of topics. Make sure you know what you need before trying to purchase them. No matter what type of Cisco interfaces and modules you are looking for, consider these action steps.

Action Steps
The best contacts and resources to help you get it done

Buy a Cisco expansion module, Cisco expansion interface or other Cisco modules online

Cisco is one of the largest names in network routing equipment. This means there are numerous distributors and resellers for all of their routers and accessories online.

I recommend: Check online to see the range of Cisco interfaces and modules. Then, use the Internet as your comparison-shopping tool. You can find new or used Cisco modules at Memorydealers.com or used parts at Recurrent Technologies, Inc.

Look for Cisco GBIC technology online

If you are specifically interested in Cisco GBICs, there are a number of websites that sell new and used Cisco GBIC technology. Cisco GBICs are very popular choices for integrating gigabit technology in your network.

I recommend: Find a company that specializes in a small number of Cisco interfaces. Optilight Products and Infinit Technology Solutions are two websites that offer either Cisco GBICs or Cisco SFPs. They are going to be more knowledgeable about these products than are general retailers.

Make sure you can support your Cisco interfaces and modules

Do not be caught without a way to maintain and repair your Cisco equipment. Cisco routers are great pieces of technology and they do not have a reputation for being fragile, but they are still critical to your network (and by extension your business) in being able to function.

I recommend: You can buy Cisco maintenance contracts online at NexTag, but if you do, first interview the company selling the contract. In addition, there are numerous websites like FixYa that give troubleshooting advice to Cisco technicians.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Cisco GBIC technology is not the only specific Cisco interface for which there are numerous specialty dealers. Use the power of the Internet to find them.
• •  Cisco certification for your employees is another option for making sure your Cisco technology remains well maintained. If you use a lot of Cisco interfaces and modules, consider hiring or paying to certify a Cisco technician.
• •  It never hurts to have a good relationship with your Cisco technicians since the routers, Cisco interfaces and modules are so critical to the good operation of your network.