1 EXHIBIT 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTS TO THE BOARD OF DIRECTORS FASTCOMM COMMUNICATIONS CORPORATION WE HEREBY CONSENT TO THE INCORPORATION BY REFERENCE IN THE PROSPECTUS CONSTITUTING A PART OF THIS REGISTRATION STATEMENT OF OUR REPORT, WHICH CONTAINED AN EXPLANATORY PARAGRAPH RELATING TO THE COMPANY'S ABILITY TO CONTINUE AS A GOING CONCERN, DATED JULY 12, 1999, RELATING TO THE CONSOLIDATED FINANCIAL STATEMENTS OF FASTCOMM COMMUNICATIONS CORPORATION APPEARING IN THE COMPANY'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED APRIL 30, 1999. WE ALSO CONSENT TO THE REFERENCE TO OUR FIRM UNDER THE CAPTION "EXPERT" IN THE PROSPECTUS. /s/ BDO SEIDMAN, LLP WASHINGTON, D.C. DECEMBER 20, 1999