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Professional Discussions => Everything Else in the Data Center => Topic started by: ggnfs000 on July 13, 2017, 02:24:34 PM

Title: did some IPv6 stuff anyone involved heavily?
Post by: ggnfs000 on July 13, 2017, 02:24:34 PM
Used WS2016 on VM to implement PXE boot server. It was simple matter of enhancing IPv4 server.
The IPv6 was much different than IPv4 but noticed following difference in setting up on WS2016:

On DHCP snap-in from servermanager, it does not seem to allow to create scope with prefix other than /64. (In contrast, i can certainly set the net address static IPv6 with any prefix).
The way to create scope pool of IPv6 address was weird. I had to do by defining the excluded addresss:
i.e. wanted pool range: 2000::100 to 2000::1000 then had to create exclusion range of 2000::100 to 2000::0ff and 2000:1001 to 2000:ffff:ffff:ffff:ffff with /64

On the server itself, I assigned static address of 2000::1 to its net interface. But during installation using IPV6 over PXE, I see it has another address assigned to it: 2000::something which it got it from its own DHCP pool.
The client had also IPv6 from pool. They were all non-sequential, (does it pick it randomly?)

Title: Re: did some IPv6 stuff anyone involved heavily?
Post by: deanwebb on July 13, 2017, 02:57:42 PM
DHCP will pick randomly, yes.
Title: Re: did some IPv6 stuff anyone involved heavily?
Post by: icecream-guy on July 13, 2017, 03:37:12 PM
I remember having to muck around with the "M" and "O" flags to get things working...that and something about RA's... it's been a while...
Title: Re: did some IPv6 stuff anyone involved heavily?
Post by: ggnfs000 on July 14, 2017, 02:01:12 AM
thx 4 input, CCNA book briefly mentioned about refer to section x.y for why net interfaces can possibly get more than one IPv6 address, lost it where it mentioned now.

Also I think the PXE client was associated at least 3-4 different IPv6 during and after installation.
Title: Re: did some IPv6 stuff anyone involved heavily?
Post by: deanwebb on July 14, 2017, 10:38:24 AM
Multiple IPv6 addresses is also a thing. Makes licensing based on IP addresses a hellacious thing.
Title: Re: did some IPv6 stuff anyone involved heavily?
Post by: ggnfs000 on July 14, 2017, 01:39:04 PM
yeah, one thing came to mind is all the observation made here are working as defined. RFC for IPV6 may be?