Cisco Cisco IOS Software Release 12.4(15)T

© 2007 Cisco Systems, Inc. All rights reserved.

Stream Control Transmission Protocol (SCTP) is a reliable datagram-oriented IP transport protocol 
specified by RFC 2960. It provides the layer between an SCTP user application and an unreliable 
end-to-end datagram service such as IP. The basic service offered by SCTP is the reliable transfer of user 
datagrams between peer SCTP users. It performs this service within the context of an association 
between two SCTP hosts. SCTP is connection-oriented, but SCTP association is a broader concept than 
the Transmission Control Protocol (TCP) connection, for example.

SCTP Release 4 introduces the SCTP Stream Reset and SCTP Authentication features.

The SCTP stream reset feature enables SCTP to reset stream transport sequence numbers and all stream 
sequence numbers. SCTP stream reset enables SCTP to:

Dynamically reset a peer’s outbound streams

Dynamically reset a local host’s outbound stream

Dynamically reset specific numbered streams

SCTP Authentication enables SCTP to:

Set up a dynamic shared association key with no shared secret

Allow a shared secret to be combined with an association key

Use the shared association secret to authenticate chunks

Negotiate which chunk types must be authenticated

Configuration information is included in the “Stream Control Transmission Protocol” module of the 
Cisco IOS IP Application Services Configuration Guide, Release 12.4T,

at the following URL:

The following sections provide information about this feature:

SCTP Release 4

Defining SCTP Chunks to be Authenticated