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ipv6 [2010/09/10 11:36] faltin |
ipv6 [2011/06/16 09:50] morten fix link to english statistics page |
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[[http://www.uninett.no/|UNINETT]] has made available statistics on the number of IPv6 addresses in active use by the | [[http://www.uninett.no/|UNINETT]] has made available statistics on the number of IPv6 addresses in active use by the | ||
Norwegian universities and university colleges. | Norwegian universities and university colleges. | ||
- | [[https://ow.feide.no/gigacampus:ipv6status|The statistics are available online (in Norwegian)]]. The basis for the statistics | + | [[https://ow.feide.no/gigacampus:ipv6status_english|The statistics are available online]]. The basis for the statistics |
is data collected by NAV (Network | is data collected by NAV (Network | ||
- | Administration Visualized). This document describes the system in use by NAV | + | Administration Visualized). |
- | 3.5 (but being improved in 3.6). | + | |
===== Data structures ===== | ===== Data structures ===== | ||
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IPv4 address mappings are collected from ''ipNetToMediaTable''. This table has | IPv4 address mappings are collected from ''ipNetToMediaTable''. This table has | ||
been deprecated in the revised IP-MIB. The revised MIB contains | been deprecated in the revised IP-MIB. The revised MIB contains | ||
- | ''ipNetToPhysicalTable'', which maps both IPv4 and IPv6 addresses, but | + | ''ipNetToPhysicalTable'', which maps both IPv4 and IPv6 addresses. (:!: NAV versions prior to 3.6 did not support the revised table) |
- | unfortunately, NAV 3.5 does not support this table. | + | |
==== IPv6-MIB ==== | ==== IPv6-MIB ==== | ||
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Statistics on IPv6 usage are obtained by examining NAVs ARP database table. | Statistics on IPv6 usage are obtained by examining NAVs ARP database table. | ||
- | The number of active IP addresses of each address family (v4, v6) at any given | + | The number of active IP addresses of each address family (v4, v6), and the number of unique MAC addresses in use at any given |
time can be extracted from this table and used to create aggregate statistics | time can be extracted from this table and used to create aggregate statistics | ||
- | across [[https://ow.feide.no/gigacampus:ipv6status|a number of NAV installations in the Norwegian NREN]]. | + | across [[https://ow.feide.no/gigacampus:ipv6status|a number of NAV installations in the Norwegian NREN]]. The numbers in UNINETT's published graphs count the number of unique MAC addresses seen, so users employing IPv6 privacy extensions should only be counted once per institution. |
===== Machine Tracker ===== | ===== Machine Tracker ===== |