Cisco Systems (CSCO)

Additional Information and Where to Find It

In connection with the proposed acquisition and required stockholder approval, Starent Networks will file with the Securities and Exchange Commission a preliminary proxy statement and a definitive proxy statement. The proxy statement will be mailed to the stockholders of Starent Networks. Starent Networks’ stockholders are urged to read the proxy statement and other relevant materials when they become available because they will contain important information about the acquisition and Starent Networks. Investors and security holders may obtain free copies of these documents (when they are available) and other documents filed with the SEC at its web site at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by Starent Networks by going to Starent Networks’ Investor Relations page on its corporate website at http://ir.starentnetworks.com.

Starent Networks and its officers and directors may be deemed to be participants in the solicitation of proxies from Starent Networks’ stockholders with respect to the acquisition. Information about Starent Networks executive officers and directors and their ownership of Starent Networks common stock is set forth in the proxy statement for the Starent Networks 2009 Annual Meeting of Stockholders, which was filed with the SEC on April 7, 2009. Investors and security holders may obtain more detailed information regarding the direct and indirect interests of Starent Networks’ executive officers and directors in the proposed acquisition by reading the preliminary and definitive proxy statements regarding the merger, which will be filed with the SEC.

In addition, Cisco and its officers and directors may be deemed to have participated in the solicitation of proxies from Starent Networks’ stockholders in favor of the approval of the proposed acquisition. Information concerning Cisco’s directors and executive officers is set forth in Cisco’s proxy statement for its 2009 annual meeting of shareholders, which was filed with the SEC on September 23, 2009, and annual report on Form 10-K filed with the SEC on September 11, 2009. These documents are available free of charge at the SEC’s website at www.sec.gov or by going to Cisco’s Investor Relations Website at http://www.cisco.com/go/investors.

Additional Information and Where to Find It

In connection with the proposed acquisition and required stockholder approval, Starent Networks will file with the Securities and Exchange Commission a preliminary proxy statement and a definitive proxy statement. The proxy statement will be mailed to the stockholders of Starent Networks. Starent Networks’ stockholders are urged to read the proxy statement and other relevant materials when they become available because they will contain important information

about the acquisition and Starent Networks. Investors and security holders may obtain free copies of these documents (when they are available) and other documents filed with the SEC at its website at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by Starent Networks by going to Starent Networks’ Investor Relations page on its corporate website at http://ir.starentnetworks.com.

Starent Networks and its officers and directors may be deemed to be participants in the solicitation of proxies from Starent Networks’ stockholders with respect to the acquisition. Information about Starent Networks executive officers and directors and their ownership of Starent Networks common stock is set forth in the proxy statement for the Starent Networks 2009 Annual Meeting of Stockholders, which was filed with the SEC on April 7, 2009. Investors and security holders may obtain more detailed information regarding the direct and indirect interests of the Starent Networks and its respective executive officers and directors in the acquisition by reading the preliminary and definitive proxy statements regarding the merger, which will be filed with the SEC.

In addition, Cisco and its officers and directors may be deemed to have participated in the solicitation of proxies from Starent Networks’ stockholders in favor of the approval of the acquisition. Information concerning Cisco’s directors and executive officers is set forth in Cisco’s proxy statement for its 2009 Annual Meeting of Shareholders, which was filed with the SEC on September 23, 2009, and annual report on Form 10-K filed with the SEC on September 11, 2009. These documents are available free of charge at the SEC’s website at www.sec.gov or by going to Cisco’s Investor Relations website at http://www.cisco.com/go/investors.

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Additional Information and Where to Find It

Scientific-Atlanta has agreed to file a proxy statement in connection with the proposed acquisition. The proxy statement will be mailed to the shareholders of Scientific-Atlanta. Scientific-Atlanta’s shareholders are urged to read the proxy statement and other relevant materials when they become available because they will contain important information about the acquisition and Scientific-Atlanta. Investors and security holders may obtain free copies of these documents (when they are available) and other documents filed with the Securities and Exchange Commission at the SEC’s web site at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by Scientific-Atlanta by going to Scientific-Atlanta’s Investor Relations page on its corporate website at www.scientificatlanta.com.

Scientific-Atlanta and its officers and directors may be deemed to be participants in the solicitation of proxies from Scientific-Atlanta’s shareholders with respect to the acquisition. Information about Scientific-Atlanta executive officers and directors and their ownership of Scientific-Atlanta common stock is set forth in the proxy statement for the Scientific-Atlanta 2005 Annual Meeting of Shareholders, which was filed with the SEC on September 27, 2005. Investors and security holders may obtain more detailed information regarding the direct and indirect interests of the Scientific-Atlanta and its respective executive officers and directors in the acquisition by reading the preliminary and definitive proxy statements regarding the merger, which will be filed with the SEC.

In addition, Cisco and its officers and directors may be deemed to have participated in the solicitation of proxies from Scientific-Atlanta’s shareholders in favor of the approval of the acquisition. Information concerning Cisco’s directors and executive officers is set forth in Cisco’s proxy statement for its 2005 annual meeting of shareholders, which was filed with the SEC on September 26, 2005, and annual report on Form 10-K filed with the SEC on September 19, 2005. These documents are available free of charge at the SEC’s web site at www.sec.gov or by going to Cisco’s Investor Relations Website at http://www.cisco.com/go/investors.