Current Meeting Report

2.6.3 IP over Optical (ipo)

NOTE: This charter is a snapshot of the 53rd IETF Meeting in Minneapolis, MN USA. It may now be out-of-date. Last Modified: 29-Jan-02
James Luciani <>
Daniel Awduche <>
Sub-IP Area Director(s):
Scott Bradner <>
Bert Wijnen <>
Sub-IP Area Advisor:
Scott Bradner <>
Technical Advisor(s):
Thomas Narten <>
Mailing Lists:
To Subscribe:
Description of Working Group:
The advent of switched multi-channel (e.g., WDM, DWDM, OTDM) optical networks using OXCs (Optical Cross-connects) and other optical switching elements presents many new opportunities for improving the performance of IP networks and supporting faster and more flexible provisioning of IP services. However, much needs to be specified before interoperable products based on these technologies can be deployed in service provider networks. The work needed in this area includes:

- Document the use of existing framing methods for IP over optical dataplane and control channels, and as necessary specify additional framing methods.

- Identify and document the characteristics of the optical transport network that are important for selecting paths for optical channels, setting-up optical channels, and tearing-down optical channels.

- Document the applications of the common control and measurement protocols to the technology-dependent aspects of optical path setup, teardown, and maintenance of optical channels across networks with optical components.

- Document the requirements for control of optical networks by elements outside the optical network itself.

- Document the applicability of IP-based protocols for the controlled dissemination of optical network topology, metric, and constraint information. Such information can be used for inventory management, path selection, and other purposes. The information to be exchanged should accommodate both all-optical and optical-electrical-optical switching technologies.

- If a need is identified to develop new protocols or make incompatible modifications to existing protocols (e.g., routing and signaling protocols) to accomplish the above goals, then a recharter must first be approved before undertaking such work.

The IP over Optical WG will coordinate with relevant working groups within the IETF to leverage existing work. The WG may also generate requirements for other IETF WGs as needed. Additionally, the WG may collaborate with other standards bodies and interoperability forums engaged in IP over optical activities (e.g., including ITU-T) to share information, minimize duplication of effort, and coordinate activities in order to promote interoperability and serve the best interest of the industry.

Goals and Milestones:
Mar 01   Produce Framework document with adequate motivation and detailed description of the context and solution space for IP/optical.
Aug 01   Submit I-D on 'carrier optical services' requirements for IP/Optical networks.
Aug 01   Submit I-D on the unique features of optical networks that are relevant for path computation and signaling in IP/Optical contexts.
Apr 02   Submit I-D on the Traffic Engineering issues that are specific to IP/Optical networks, which take into account the peculiar characteristics of the operating environment, including aspects of protection/restoration unique to IP/optical.
Apr 02   Submit I-D on the requirements for distribution of optical topology state information using the common control and measurement protocols.
Apr 02   Submit I-D on the requirements for signaling in IP/Optical networks using IP signaling protocols.
Dec 02   Submit applicability statements describing the use of IP based protocols for signaling and dissemination of network topology state information in IP/Optical networks.
Dec 02   Document existing encapsulation schemes for IP/optical data plane and control plane channels.
Dec 02   Submit Framework draft to IESG as a informational RFC.
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Current Meeting Report

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