RFC 2281 · INFORMATIONAL · 1998
WED · 29 JUL 2026
Cisco Hot Standby Router Protocol
Overview
RFC 2281, “Cisco Hot Standby Router Protocol”, is an Informational document published in March 1998 by T. Li, B. Cole, P. Morton, D. Li. The canonical text is published by the RFC Editor.
Abstract
The memo specifies the Hot Standby Router Protocol (HSRP). The goal of the protocol is to allow hosts to appear to use a single router and to maintain connectivity even if the actual first hop router they are using fails. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 2281 is hosted at rfc-editor.org. Available in TXT,HTML.
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