Exhibit 23.3

Consent of independent public accountants


   As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our report on ADC
Telecommunications, Inc.--Broadband Communications Division and Subsidiaries
dated August 3, 2001 included in C-COR.net Corp.'s Form 8-K/A dated October 19,
2001 and to all references to our Firm included in this registration statement.


/s/ ARTHUR ANDERSEN LLP
Arthur Andersen LLP
Minneapolis, Minnesota

January 24, 2002