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EXHIBIT 23.1
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the reference to our firm under the caption "Experts" in the
Post-Effective Amendment No. 1 of the Registration Statement (Form S-3 No. 333-
32846) and related prospectus of Copper Mountain Networks, Inc. for the
registration of 1,142,293 shares of its common stock and to the incorporation
by reference therein of our report dated January 28, 2000 (except for Note 12,
as to which the date is February 29, 2000), with respect to the financial
statements and schedule of Copper Mountain Networks, Inc. included in its
Annual Report (Form 10-K) for the year ended December 31, 1999, and our report
dated February 18, 2000 (except for Note 7, as to which the date is February
29, 2000), with respect to the financial statements of OnPrem Networks
Corporation included in Copper Mountain Networks, Inc.'s Current Report (Form
8-K) dated February 29, 2000, filed with the Securities and Exchange
Commission.
/s/ ERNST & YOUNG LLP
San Diego, California
June 2, 2000
