Cisco's Patent Claim on VRRP and HSRP
This IPR disclosure was submitted by e-mail.
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Submitted Date: March 20, 1998
The text of the original IPR declaration:
Late in 1997, Cisco wrote: >>With reference to the recently published Internet draft: Title : Virtual Router Redundancy Protocol Author(s) : S. Knight, D. Weaver, D. Whipple Filename : draft-whipple-vrrp-00.txt Pages : 14 Date : 11/26/1996 >>This message is to inform you that Cisco believes that this >>proposed protocol may infringe Cisco's patent #5,473,599, >>Standby Router Protocol. The original document has gone through a number of revisions and name changes. When submitted by the vrrp WG for publication, a query was sent to Cisco. The following message was received on March 11: We have done the evaluation and our response is the following: Cisco believes that implementation of draft-ietf-vrrp-spec-05.txt will require a license to Cisco's patent #5,473,599. If this protocol is approved as an IETF standard, licenses will be available to any party on reasonable, nondiscriminatory terms for implentation of the protocol. On March 20, 1998, the definitive statement from Cisco Systems was received: From: Martin McNealis