ipv6
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ipv6 [2010/09/10 10:19] faltin |
ipv6 [2011/06/16 09:50] morten fix link to english statistics page |
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| ====== IPv6 address mechanims in NAV ====== | ====== IPv6 address mechanims in NAV ====== | ||
| - | The basis for | + | [[http://www.uninett.no/|UNINETT]] has made available statistics on the number of IPv6 addresses in active use by the |
| - | [[https://ow.feide.no/gigacampus:ipv6status|UNINETT's IPv6 statistics]] | + | Norwegian universities and university colleges. |
| + | [[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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| First defined in RFC 1213, later revised in RFC 4293. | First defined in RFC 1213, later revised in RFC 4293. | ||
| - | 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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| deprecated. Still in use by several vendors, though. | deprecated. Still in use by several vendors, though. | ||
| - | IPv6 address mappings are collected from ipv6NetToMediaTable. | + | IPv6 address mappings are collected from ''ipv6NetToMediaTable''. |
| ==== CISCO-IETF-IP-MIB ==== | ==== CISCO-IETF-IP-MIB ==== | ||
| Line 46: | Line 45: | ||
| (finally published in RFC 4293). | (finally published in RFC 4293). | ||
| - | IPv6 address mappings are collected from cInetNetToMediaTable. | + | IPv6 address mappings are collected from ''cInetNetToMediaTable''. |
| ===== Algorithm ===== | ===== Algorithm ===== | ||
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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 ===== | ||
| Line 73: | Line 72: | ||
| ===== Further information ===== | ===== Further information ===== | ||
| - | If you would like to implement your own solution for IPv6 deployment statistics, easiest way to go is to first install | + | If you would like to implement your own solution for IPv6 deployment statistics, easiest way to go is first to install |
| - | NAV. Alternatively you could implement your own IPv6 SNMP collection scheme based on the ipv6NetToMediaTable. For | + | NAV. Alternatively you could implement your own IPv6 SNMP collection scheme based on the ''ipv6NetToMediaTable''. For |
| - | code details, do not heisitate to contoct the NAV team at [[https://postlister.uninett.no/sympa/info/nav-users|nav-users]]. | + | code details, please contact the NAV team at [[https://postlister.uninett.no/sympa/info/nav-users|nav-users]]. |
ipv6.txt · Last modified: 2022/09/07 08:16 by morten
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