Ikanos Communications, Inc. Watch

from S-1/A 23 pages Shares* Ikanos Communications, Inc. Common Stock Underwriting Agreement

from 8-K 22 pages 11,143,800 Shares* Ikanos Communications, Inc. Common Stock Underwriting Agreement

from S-1/A 36 pages Ikanos Communications, Inc. [ ] Shares(a) Common Stock ($0.001 Par Value) Underwriting Agreement

from SC 13G 1 page <page> Cusip No. 45173e 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 Ikanos Communications, Inc. Executed as a Sealed Instrument This 14th Day of February, 2006. Greylock X Limited Partnership By: Greylock X GP Limited Partnership General Partner By: /S/ William W. Helman William W. Helman Managing Partner Greylock X-A Limited Partnership By: Greylock X GP Limited Partnership General Partner By: /S/ William W. Helman William W. Helman Managing Partner Greylock X GP Limited Partnership By: /S/ William W. Helman William W. Helman, Managing Partner /S/ William W. Helman William W. Helman Page 9 of 9 Pages

from S-1/A 29 pages Ikanos Communications, Inc. Sharesa/ Common Stock ($0.001 Par Value) Underwriting Agreement