Just an idea for a self organiziong IPv6 address space network
"Pepmiller, Craig E." <[email protected]> Wed, 23 Oct 2002 16:03:57 -0500
| Newsgroups | gmane.network.research.irtf |
|---|---|
| Message-ID | <DED9C2BCA57FC544ABF93CD5EE01F28C1FEEDE@um-mailnode1.um.umsystem.edu> |
I have been considering making a proposal for part of the reserved IPv6 = address space. The goal would be experimentation into a self-organizing = network. Please help me brainstorm what is needed for a self-organizing = IP network. Proposed protocol: Address space allocation protocol (yes I know ASAP = is taken) Goal: Automatically assign IPv6 address space to routers and clients. Definitions: 1) Seed point: An Internic controlled, fixed start of network- the = seed point is where all other networks directly or indirectly get their = addressing from the reserved pool and their authority to delegate = addressing. This router/server has the only fixed address. 2) Seed router: The router/server that acts as the seed point. 3) Delegate router: Any router that understands the protocol and can = act on the part of the seed for downstream connections. How the protocol works: 1) non-seed routers connect to the seed point (or a delegate) by using = either pre-assigned addresses (as currently assigned by the Internic) or = through the IPv6 local-link addressing 2) non-seed routers make a request for address space and forward their = current routing table (as generated by BGP and any of their IGPs) 3) seed router (or it's delegate) executes tests to determine bandwidth = and minimum latency of the local link to the requesting router 4) seed router (or it's delegate) evaluates the routing table to = determine expected address requirements; larger chunks of address space = are allocated for routers with large, complex routing tables reflecting = lots of aggregated routes; high speed connection to the seed (or = delegate) and high latency (This is an attempt to cast the address net = as wide as possible first. High latency indicates that the requesting = router is a larger physical distance from the seed point.) any routing = table entries that use addressing from the reserved block for this = protocol are discounted. The goal is to make the address block = assignment enough to cover the address requirements assuming that all = downstream networks will accept addresses from the requesting router. =20 5) the seed router or delegate assigns an address block to the = requesting router and sets a secondary address on the connection to the = starting address of that range 6) the seed router (or delegate) communicates the address block to the = requesting router. If the address block allocation is more than enough = to cover the downstream networks as indicated in the routing table then = the seed router (or delegate) also communicates that the requesting = router is able to act as a delegate 7) the requesting router sets a secondary address to the starting = address of the address block plus one and acknowledges the block = assignment and agreement to be a delegate (if offered) from the new = address 8) the delegate router that made the assignment communicates the = assignment to the seed point. =20 9) the seed point makes a log entry of the assignment. Potential modifications: 1) multiple seed points 2) upstream communication of unused address space for possible = reassignment 3) modification of the address block calculation to handle waste in = other IPv6 address assignments. The initial protocol relies on routing = tables that are mostly IPv4 address blocks, which can easily be covered = by a small segment of the IPv6 block reserved for the protocol. 4) ability to make secondary assignments to routers that come back = asking for more address space 5) potential for the seed or a delegate to call for readdressing to = compact the assigned address space and free up blocks for reassignment Open questions: 1) is bandwidth, latency and a routing table enough to make decisions = on address block assignments? 2) any suggestions? Thanks- -Craig Pepmiller=09 _______________________________________________ irtf-rr mailing list [email protected] http://puck.nether.net/mailman/listinfo/irtf-rr