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                                                                  EXHIBIT 23.2

             CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Selected Historical
Condensed Financial Information and Comparative Per Share Data," "Selected
Historical Consolidated Financial Data of Clarent" and "Experts" in the
Registration Statement (Form S-4) of Clarent Corporation for the registration
of shares of its common stock and to the inclusion therein of our report dated
January 19, 2000, with respect to the consolidated financial statements and
schedule of Clarent Corporation.


                                        /s/ ERNST & YOUNG LLP


Palo Alto, California
May 25, 2000



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