Standardization Efforts


The QUIC working group develops a standards-track specification for
a UDP-based, stream-multiplexing, encrypted transport protocol. Members of the MAMI consortium are activity contributing to the QUIC working group focusing on manageability of the network QUIC transport semantic in stateful devices in the network.


Transport Services (taps)

The TAPS working group will develop an (abstract) interface for applications
to make use of Transport Services without the need to have detailed knowledge about the transport protocol used or current network conditions and potential middlebox impairments. The initial working document is authored by members of the MAMI Consortium.


Transport Area Working Group (tsvwg)

The transport area working group (tsvwg) covers general topics and maintainance task in transport. Gorry Fairhurst is one the chairs of this group. The MAMI project activitely participates in this group in discussion on UDP encapsulation, management of encrypted protocols, and enhanced network signaling, such as with the use of Explicit Congestion Notification.


Automated Certificate Management Environment (ACME)

The Automated Certificate Management Environment (ACME) working group took up work from the Limited Use of Remote Keys (lurk) effort that hold a BoF meeting at IETF-96.

IETF Internet-Drafts:


Transport Layer Security (tls)

The Transport Layer Security (tls) working group is currently working with a design team on optimizations to support scenarios that require a connection ID for UDP based transmissions.

IETF Internet-Drafts:


TCP Maintenance and Minor Extension (tcpm)

The tcpm working group is responsible for TCP maintainance and minor extensions. The MAMI project works in this context on a more accurate ECN feedback mechanims for TCP that can be used to improve congestion control and reduce latency.


IPv6 Maintenance (6man)

The 6man working group is responsible for the maintenance and
advancement of the IPv6 protocol specifications. As the MAMI project is working on MTU Path discovery as one piece of path information provided in cooperation with network devices, partners of the project also contribute to PATH MTU discovery in the network layer for IOV6.


Path Layer UDP Substrate (PLUS)

Members of the MAMI consortium and EAB have proposed a Path Layer UDP Substrate (plus) in the IETF, initially called Substrate Protocol for User Datagrams (SPUD). PLUS is aiming for a UDP-based encapsulation protocol to allow explicit cooperation with middleboxes while using new, encrypted transport protocols. At IETF-92 a non-working group forming SPUD BoF was held with Mirja Kühlewind acting as co-chair. Further Brian Trammell and Joe Hildebrandt, who is a member of MAMI’s EAB, held presentations. At IETF-96 Mirja Kühlewind, Brian Trammell, Joe Hildebrand, and Ted Hardie (Google) proposed a working group forming BoF, not resulting in an active working group. Efforts to support middelbox statement as well as initial use case for middlebox signaling such as diagnosibitly are on-going.

IETF Internet-Drafts:


IAB IP Stack Evolution Program and IAB Privacy and Security Program

Brian Trammell is the Program Lead for the Internet Architecture Board’s IP Stack Evolution Program; Mirja Kühlewind is a member of the Program. The Program discusses efforts within the IETF and IRTF to advance the architecture of the Internet protocol stack, related to maprg (see below) and PLUS (see above).

The Privacy and Security Program, where Brian Trammel is a member, focuses on privacy and security in the IETF, including support of pervasive encryption of application data as well as the transport header as well as the tussle between privacy to prevent pervasive monitoring and network management functions.

IETF Internet-Drafts:


IRTF Measurement and Analysis for Protocols Research Group (maprg)

Since IETF-96 maprg is an IRTF research group focusing on Internet measurement to explore middlebox impairments and other phenomena that can influence protocol engineering and practice. Mirja Kühlewind and Dave Plonka are co-chairing the proposed research group.

maprg met first at IETF-97, howver, also already met twice at IETF-96 and IETF-95 as being a proposed reserach group and is the follow-up activity of the proposed hopsrg (How ossified is the protocol stack? research group) that was initially discuss at the IAB Workshop on Stack Evolution in a Middlebox Internet (SEMI) in January 2015 in Zurich. hopsrg also held two meeting at IETF-93 and IETF-94.


Network Function Virtualization (nfvrg)

NFVRG is a concluded research group that focused on discussion of research problems related to Network Function Virtualization (NFV). The MAMI project contributed input on architectural considerations and Virtual Network Functions (VNFs) Descriptors.



The ETSI Technical Committee (TC) CYBER (on cybersecurity) is considering the features of what they exactly term a “Middlebox Cooperation Protocol”’ in the recently approved work-item DTS/CYBER- 0027. MAMI partner TID is a supporting organization for this work.



The Institute of Electrical and Electronics Engineers (IEEE) Encrypted Traffic Inspection (ETI) WG is considering mechanisms for establishing trust on middleboxes dealing with encrypted traffic. The MAMI team is monitoring the evolution of this activiy and, given their current status, making some initial contributions based on the project results to define their scope.



Diego R. López chairs the TSC (Technical Steering Committee) of the ETSI ISG on Network Function Virtualization.