EX-99.1 2 b38267syex99-1.txt AGREEMENT 1 CUSIP No. 871206 10 8 Exhibit I AGREEMENT Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the shares of Common Stock of Sycamore Networks, Inc. EXECUTED as a sealed instrument this 13th day of February, 2001. MATRIX PARTNERS V, L.P. By: Matrix V Management Co., L.L.C. General Partner By: /s/ Timothy A. Barrows ------------------------------------ Timothy A. Barrows Managing Member MATRIX V ENTREPRENEURS FUND, L.P. By: Matrix V Management Co., L.L.C. General Partner By: /s/ Timothy A. Barrows ------------------------------------ Timothy A. Barrows Managing Member MATRIX V MANAGEMENT CO., L.L.C. By: Timothy A. Barrows Managing Member By: /s/ Timothy A. Barrows ------------------------------------ Managing Member /s/ Timothy A. Barrows --------------------------------------------- Timothy A. Barrows /s/ Paul J. Ferri --------------------------------------------- Paul J. Ferri Page 11 of 11 pages