The IETF published it's "Meeting Network Requirements" in December. They note that "The IETF Meeting Network has become integral to the success of any IETF meeting."
Among the requirements are:
* A primary and backup link MUST be provided for redundancy.
* The primary link MUST provide at least 45Mb bandwidth in both directions, and SHOULD have at least 100Mb bidirectionally.
* The backup link MUST have 10 Mb bandwidth in both directions and SHOULD have at least 45 Mb bandwidth in both directions.
Makes me want to go to the next IETF meeting.
Details at http://www.ietf.org/IESG/content/ions/ion-meeting-network-requirements.txt