A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Redefining Selected ICMP Messages To Include
a Length Attribute and an Extension Structure
Author(s) : R. Bonica, et al.
Filename : draft-bonica-internet-icmp-02.txt
Pages : 17
Date : 2006-3-22
This document redefines selected ICMPv4 messages to include an
extension structure. The extension structure is situated at the end
of the ICMP message. It includes an extension header followed by one
or more extension objects. Each extension object contains an object
header and object payload. All object headers share a common format.
This document further redefines a subset of those ICMP messages by
specifying a length attribute. Many of the ICMP messages to which an
extension structure can be appended include and "original datagram"
field. The "original datagram" field contains the initial octets of
the datagram to which the ICMP message is a response. Although the
original datagram field is of variable length, the ICMP message does
not include a field that specifies its length. Therefore, in order
to facilitate message parsing, this draft allocates eight previously
reserved bits to reflect the length of the "original datagram" field.
Finally, this document addresses backwards compatibility issues.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-bonica-internet-icmp-02.txt
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