EXHIBIT A --------- AGREEMENT OF REPORTING PERSONS Each of the undersigned hereby agrees that Amendment No. 2 to the Schedule 13G filed on the date hereof with respect to the shares of Common Stock of InterNAP Network Services Corporation has been...

                                    EXHIBIT A
                                    ---------

AGREEMENT OF REPORTING PERSONS

     Each of the undersigned hereby agrees that Amendment No. 2 to the Schedule
13G filed on the date hereof with respect to the shares of Common Stock of
InterNAP Network Services Corporation has been filed on behalf of the
undersigned.

SIGNATURE:
----------

     Dated: August 1, 2001

     Entities:

Oak Investment Partners VIII, Limited Partnership
Oak Associates VIII, LLC
Oak VIII Affiliates Fund, Limited Partnership
Oak VIII Affiliates, LLC
Oak Investment Partners X, Limited Partnership
Oak Associates X, LLC
Oak X Affiliates Fund, Limited Partnership
Oak X Affiliates, LLC
Oak Management Corporation

                                    By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                         ------------------------------

                                         Xxxxxx X. Xxxxxxxxxx, as
                                         General Partner or
                                         Managing Member or as
                                         Attorney-in-fact for the
                                         above-listed entities
     Individuals:

Xxxxxx X. Xxxxxx
Xxxxxx X. Xxxxxxxxx
Xxxxxx X. Xxxxxxxxxx
Xxxxxxx X. Xxxxxx
Xxx X. Xxxxxx
Xxxxx X. Xxxxxx

                                    By:  /s/ Xxxxxx X. Xxxxxxxxxx
                                         ------------------------------

                                         Xxxxxx X. Xxxxxxxxxx,
                                         Individually and as
                                         Attorney-in-fact for the
                                         above-listed individuals