Ask the Expert

What are the advantages of DWDM over a virtual switching supervisor?

What are the advantages of dense wavelength division multpliexing (DWDM) over a virtual switching supervisor?

    Requires Free Membership to View

A virtual switching supervisor (VSS) is a solution that binds two Catalyst 6500 chassis in a single switching system, allowing you to bundle links terminated on both chassis in a single EtherChannel (without VSS, all links in an EtherChannel have to be terminated on the same box). This solution reduces the impact that spanning tree has on your network, particularly on bisectional bandwidth. (You can find more information in this introduction to data center technologies for network engineers.)

Dense wavelength division multiplexing (DWDM) is a layer-1 transport technology that multiplexes several optical signals into the same fiber by using different wavelengths (colors). It allows you to transport more data across existing dark fiber infrastructure.

Comparing the two is like comparing a car to a highway; they perform completely different functions.

This was first published in September 2010

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: