This WILL create a potential spanning-tree loop - which may and may not create problems, depending on the capabilities and configuration of the switches involved. If they all are configured to handle spanning-tree properly (default for a Cisco workgroup switch often is), then the switches will realize this, and effectively block traffic on one of the links; but keeping it "on standby" for a situation where one of the OTHER links goes down.
If the switches don't understand spanning-tree or it isn't configured, then wild and unwanted things will happen - connections will randomly drop off, and traffic levels may even reach capacity on the uplinks.
Last Wiki Answer Submitted: July 3, 2009 4:48 pm by Snapper70920 pts.
If you live outside the United States, by submitting your email address you consent to having your personal data transferred to and processed in the United States.