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How do I find a book? Can I borrow this item? The total prefix count drops from over , to under , And secondly, even in IPv6 there are opportunities to reduce the number of globally routed prefixes if we could reorganise.
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But the clear observation is that if we compare the IPv4 and IPv6 minimum prefix dynamics, there is no sign of convergence of IPv6 onto IPv4 in these ideal conditions. The rate of IPv6 deployment does not appear to be such that we can expect to see similar prefix intensities anytime soon. Address space that is delegated is handled elegantly by the prefix-pixie model: this address space only counts towards the ASN announcing it and is subtracted from the address space for ASN that originates the covering prefix.
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For this reason we counted the number of prefixes per ASN in this category, so we can take them into account in this model. An example would be content networks without a backbone between their PoPs. For now we ignore these networks in our model and assume the vast majority of the Internet exists of contiguous ASNs capable of ingesting traffic for all of its address space at all of their ingress points so they could originate their full address space from all BGP speakers at these ingress points.
Figure 5 shows the volumes of these prefixes compared to our minimum necessary prefix counts. Figure 5: Deaggregated and minimum prefix counts. So taking this model of the combination of the minimum necessary prefix counts, and the observed deaggregation, what does the scale difference between IPv4 and IPv6 look like?
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Figure 6: Deaggregated and minimum prefix comparison. If size were the only thing that mattered, this would still be a sad story for IPv6, because the weight of deaggregation in IPv4 is large. But there are signs that the comparative scale between the two network ecologies is changing.
It is also likely that the pace of IPv6 deployment, and its deaggregation will be increasing. Notify me of new comments via email.
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