Abstract: The IP Router Alert Option is an IP option that alerts transit routers
to more closely examine the contents of an IP packet. RSVP, PGM and
IGMP are some of the protocols which make use of the IP Router Alert
option. The current specification for the IP Router Alert Option does
not define mechanisms to facilitate discriminating across different
users of Router Alert. As a result, networks using router Alert may
have more secuity exposure than necessary and/or may unnecessarily
block some transit Router Alert packets. This document describes new
rules for the IP Router-Alert Option that aid routers to process these
packets more selectively.
Publication Year: 2009
Publication Date: 2009-03-04
Language: en
Type: article
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