Applicability of Internet principles and lessons

From Local

Participants: Andrew Krioukov, Yanpei Chen, Ari Rabkin, Prabal Dutta, Randy Katz

Safety Challenges

• What are the safety issues of having bi-directional power ports? Exposed power could kill!
• Must auto-detect and shut off power when endpoint disappears.
• How do we detect and avoid loops in the power plane?

Physical/Link Layer Issues

• What does the neighbor discovery protocol for the IPS network look like?
• Claim: discovery should be automatic, like IPv6.
• What sort of IPS interconnection topologies should be supported for the power plane?
• Shared bus reflect the current home, but could complicate link capacity planning and estimation.
• Point-to-point provides easier accountability -- no joule theives.
• How could an IPS autodetect the link capacity?

Network/Transport Issues

• What are the scoping rules for IPS networks? Subnets?
• Accountability? Metering? Billing? This was left out of the Internet design but we can't do that here.
• How do we resolve billing disputes? Continuous accounting?
• An IPS subnet might use one type of protocol in the interior domain and a different one in the exterior.
• An IPS subnet might use filtering at the ingress/egress point to squelch in-band control traffic.