2.7.4 IP over Resilient Packet Rings (iporpr)

NOTE: This charter is a snapshot of the 50th IETF Meeting in Minneapolis, Minnesota. It may now be out-of-date. Last Modified: 14-Mar-01


Frank Kastenholz <fkastenholz@unispherenetworks.com>
Albert Herrera <albherre@cisco.com>

General Area Director(s):

Fred Baker <chair@ietf.org>

General Area Advisor:

Fred Baker <chair@ietf.org>

Technical Advisor(s):

David Oran <oran@cisco.com>
Thomas Narten <narten@raleigh.ibm.com>

Mailing Lists:

General Discussion:iporpr@cisco.com
To Subscribe: iporpr-request@cisco.com
In Body: subscribe iporpr
Archive: ftp://ftp.ietf.org/ietf-mail-archive/iporpr/

Description of Working Group:

Note: this WG is one of a set of WGs that comprise the 'sub-IP' pseudo-area that the IESG recently created. All of the sub-IP WGs are temporarily being housed in the General Area until the IESG decides on a final management structure for managing these groups. The Area Directors for the following areas acting as a group will be the Area Advisors: INT, OPS, RTG and TSV. The name(s) listed above under "Technical Advisor(s)" are the the responsible Area Directors for the working group.

Resilient Packet Rings, under development within the IEEE's 802.17 RPRWG, will provide substantial enhancements in both efficiency and flexibility over current bi-directional ring topologies. Benefits of resilient packet rings (RPRs) will include spatial re-use (full utilization of both counter- rotating rings) while maintaining APS-like protection switching during media faults. The 802.17 RPRWG may develop mechanisms for topology discovery, congestion control, and protection switching. Reference the IEEE 802.17 RPRWG at http://www.ieee802.org/rprsg/index.html for further information.
In particular, the IPoRPR Working Group would produce a requirements and framework document which will be used as input to the IEEE RPRSG to help it formulate its requirements. Areas which are of particular interest to the IPoRPR Working Group will involve the layer 2 to layer 3 interaction in areas such as:
- alarm notification
- fast restoration
- fast convergence
- traffic engineering (e.g. resource availability/usage information)
- quality of service issues
This work is specifically being done in parallel with the IEEE effort so that cross fertilization between the IEEE and IETF groups takes place while the IEEE standard is being developed.
The requirements and framework document will:
- Clearly state requirements for L2-L3 interaction within these rings
- Highlight the motivation and associated benefits
- Define key components, Layer abstractions and partitioning
- Document assumptions, any observations and issues
- Formulate the mechanisms required to accomplish IP-awareness within these Resilient Packet Rings
The IPoRPR 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.
The WG will not address issues that are clearly within the MAC Layer and will not develop any protocols at this time. No formal liaison with the IEEE is anticipated. It is expected that individuals will participate directly in both groups.

Goals and Milestones:

Mar 01


Initial Requirements & Framework Document submitted as an Internet-Draft

Aug 01


Submit Requirements and Framework Document to IESG as informational

Aug 01


Recharter or shut down

No Request For Comments

Current Meeting Report

50th IETF - IPORPR WG Minutes

The IP Over Resilient Packet Rings working group met 20 Mar 2001.

Albert Herrera and Frank Kastenholz chaired the meeting. Frank Kastenholz kept the minutes.

Scott Bradner of the IESG gave a brief presentation on the new Sub-IP area.

Albert Herrera gave a presentation on the status of the IEEE 802.17 work. Access to the IEEE documents by the IETF working group was raised as an issue.

Russ White gave a presentation on the framework document. A discussion ensued on the suitability of doing ISIS and OSPF work in the contextof this working group (or at all).

The working group decided that the working group would continue to focus on the current chartered work items.

N. Ghani presented "Synergies Between Optical and Packet Rings" as a possible work item to add to the working group's charter.

The working group decided that this work would be better done in the CCAMP working group and so will be taken there.

Dimitri Papadimitriou presented "Optical Rings and Hybrid Mesh Rings on Optical Networks" as a possible work item to add to the working group's charter. After significant discussion, the working group decided that this work would better be done TEWG, among others, and the work will be taken there.

Albert Herrera presented a wrapup.

The meeting adjourned.


IPoRPR Framework
Synergies Between Optical and Packet Rings
Optical Rings and Hybrid Mesh Rings