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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: aads renumbering rumor and implications
I don't know about the specifics of ADS, but this question: > o does anyone see why the exchange address space needs to be globally > routable? is valid in any case. Global announcement of IX address space has caused me trouble in the past when "remote" maintenance access depends on it; inconsistent policy with respect to IX prefix announcement caused the path to the IX prefix to be wildly lossy, while announcement of a non-IX prefix was much better. We addressed that by making sure that all equipment was maintained and monitored remotely using non-IX address space addresses so that there was slightly better control over the announcement (and over packet-level access to addresses on which monitoring was permitted). That said, I think it's still important to have global reachability for exchange point addresses so that problems like congestion can be remotely diagnosed. Sometimes the difference in packet loss between a provider's IX address and some address one hop beyond it is a valuable clue in tracking down problems; without global routing of exchange point addresses, such diagnosis would only be possible to those who distribute the IX prefix within their IGP. Stephen
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