RFC 2113 · PROPOSED STANDARD · 1997
SUN · 14 JUN 2026
IP Router Alert Option
Overview
RFC 2113, “IP Router Alert Option”, is a Proposed Standard document published in February 1997 by D. Katz. It has since been updated by RFC 5350, RFC 6398. The canonical text is published by the RFC Editor.
Abstract
This memo describes a new IP Option type that alerts transit routers to more closely examine the contents of an IP packet. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 2113 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1997
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- RFC 2115 Management Information Base for Frame Relay DTEs Using SMIv2
- RFC 2110 MIME E-mail Encapsulation of Aggregate Documents, such as HTML
- RFC 2116 X.500 Implementations Catalog-96
- RFC 2109 HTTP State Management Mechanism
- RFC 2117 Protocol Independent Multicast-Sparse Mode : Protocol Specification