# IPv6 Summarization Example

**URL:** <https://forum.networklessons.com/t/ipv6-summarization-example/1223>\
**Category:** Lessons Discussion\
**Created:** [December 29, 2016, 5:14pm UTC](https://forum.networklessons.com/t/ipv6-summarization-example/1223 "2016-12-29T17:14:34Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![hroger](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/hroger/32/1552_2.png) [@hroger](https://forum.networklessons.com/u/hroger)\
**Post date:** [April 15, 2019, 2:42pm UTC](https://forum.networklessons.com/t/ipv6-summarization-example/1223/12 "2019-04-15T14:42:19Z")

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Hello Laz,  
I understand that 2001:DB8:1234:AB80::/57 is the “optimal” summary of 2001:DB8:1234:ABA2::/64 and 2001:DB8:1234:ABC3::/64. but I see that this summary includes the whole pool [2001:0db8:1234:ab80:0000:0000:0000:0000 - 2001:0db8:1234:abff:ffff:ffff:ffff:ffff] … which must be specified in the Lan documentation.

Then, if there is no constraint in the exibit asking to exclude everything before 2001:db8:1234:ab7f:ffff:ffff:ffff:ffff and everything after 2001:0db8:1234:ac00:0000:0000:0000:0000 I thinks that an “industrial” summary can be 2001:DB8:1234:AB00::/56 (pool from AB00 to ABFF) or, even more , 2001:DB8:1234:AA00::/55. then, with a good industrial IP hierarchical organization (but expensive in IP), no Lan documentation should be made.

(I think, for example, a question from the ccna that poses "is 2001:db8:1234:aa00 :😕 55 a possible summary of 2001:DB8:1234:ABA2 :😕 64 and 2001:DB8:1234:ABC3 :😕 64)

Am I right ?

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