This is a great question because it is a confusing topic for many. In Fibre Channel parlance, a fabric is the entity that provides network services to end nodes. A fabric can be a single switch or it can be multiple switches that exchange information about the network and the nodes connected to it. All end nodes attached to a fabric, whether it is one or more switches, will get uniform responses to all queries, regardless of which switch they are connected to.
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This was first published in November 2001