IPv6 User Plane » History » Version 2
laforge, 09/06/2017 11:25 AM
| 1 | 1 | laforge | h1. IPv6 User Plane |
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| 3 | 2 | laforge | As of August 2017, User Plane IPv6 support has been implemented for [[OpenGGSN]] and [[OsmoGGSN]]. This means you can not only provide IPv4 addresses to mobile terminals, but also IPv6 prefixes. |
| 4 | 1 | laforge | |
| 5 | Please see the following notes: |
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| 6 | 2 | laforge | * OpenGGSN currently can only operate *either an IPv4 pool or an IPv6 pool*. If you need both, you will have to either |
| 7 | ** run two OpenGGSN instances in parallel, e.g. each on a separate GTP-side IP address and route different APNs from the SGSN (such as [[OsmoSGSN:]] to the different OpenGGSN instances/IPs. |
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| 8 | ** switch to the OpenGGSN successor [[OsmoGGSN]] |
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| 9 | 1 | laforge | * You must allocate a dynamic IP address pool sufficiently large, as every PDP context gets its own /64 prefix. So a /56 prefix gives you 256 /64 prefixes, i.e. 256 PDP contexts |
| 10 | * IPv6 is only supported on the user plane, not on the outer (GTP transport) layer between SGSN and GGSN! |
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| 11 | * Linux [[Kernel_GTP]] does *not* support IPv6 at this point, so you will have to handle GTP-U in OpenGGSN |
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| 12 | * See https://osmocom.org/issues/2418 for example config files and pcap traces |
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| 13 | * See http://laforge.gnumonks.org/blog/20170809-osmocom-ipv6 about technical background |
