Radia and Dave:There is a dispute going on regarding the scalability of topology hiding by what amounts to IS-IS level 1 routing (identifying hosts in a multi-LAN network by their host identifier and using a common subnet ID for the domain). Do you know of available documentation of IS-IS level 1 routing and its tested scalability?
As Radia knows, this question is also being looked at in IEEE 802.1, which presumes that there is only a single multi-LAN-LAN, and that MAC addresses are used to route within it.
Fred On Jun 28, 2006, at 12:40 PM, Margaret Wasserman wrote:
50K is an order of magnitude higher than the analysis in Alex Zinin'spresentation would seem to indicate. His presentation indicates that flat routing will only scale to something on the order of 1K nodes. Please feel free to check with Alex, though, as he certainly has more understanding ofIGP scaling than I do. [snip] If this document is going to recommend doing flat routing for topologyhiding, I think that the WG needs to do the analysis to determine that thisis a valid and scalable technique.