CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the VideoServer, Inc. 1995 Employee Stock Purchase Plan of our report dated January 19, 1999, with respect to the consolidated financial statements and schedule of VideoServer, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 1998, filed with the Securities and Exchange Commission /s/ Ernst & Young LLP ERNST & YOUNG LLP Boston, Massachusetts August 12, 1999