Ports changing from fabric to loop mode

Ask the Expert

Ports changing from fabric to loop mode

Ports on my Brocade 4100 have been changing from fabric ports to loop ports. What is the significance of this and why does it happen?

Continue Reading This Article

Enjoy this article as well as all of our content, including E-Guides, news, tips and more.

By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.

You also agree that your personal information may be transferred and processed in the United States, and that you have read and agree to the Terms of Use and the Privacy Policy.

Safe Harbor

When are the ports changing from fabric to loop mode? Are they changing randomly on their own and independently of when any devices are being added, removed or powered on?

The significance is that if a loop device, for example an older tape drive, is attached and powered on, a fabric port can automatically sense and change to loop mode. Likewise, if a loop device were removed and a fabric enabled device were plugged into the port, the Brocade switch can automatically sense and change it to fabric port.

If your ports are changing randomly and independently of any devices being added, removed, powered up, or during backups, check with your solution provider or the Brocade tech support Web site to see if you need to adjust some settings or firmware.

This was first published in March 2007