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I see they send RA messages (ICMPv6 type 134) but these messages don't contain any prefixes. But why?
Basics/fundamentals of IPv6 dynamic routing via RA/ND in Windows Server
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ns.88.ns
16
Reputation points
HI, Community.
A question related to dynamic IPv6 routing via RA/ND (with no static routes) in Windows (2016/2019 - doesn't matter). As I know - router nodes exchange its routes (which are defined to be published) via RA/RD. There is a very simple setup I'm trying to configure:
So, there are two Windows Server 2019 with RRAS role installed and configured (router1 and router2), IPv6 forwarding is enabled.
ROUTER1 is configured as:
ETH1: fd80::10/64
ETH0: fd81::10/64
ROUTER2 is configured as:
ETH1: fd82::20/64
ETH0: fd81::20/64
On both hosts, I enabled RA/RD:
netsh int ipv6 set int eth0 adv=ena rou=ena
netsh int ipv6 set int eth1 adv=ena rou=ena
Then I adjusted connected routes to be published:
on ROUTER1:
netsh int ipv6 set route prefix=fd80::/64 int=eth1 publish=yes
netsh int ipv6 set route prefix=fd81::/64 int=eth0 publish=yes
on ROUTER2:
netsh int ipv6 set route prefix=fd82::/64 int=eth1 publish=yes
netsh int ipv6 set route prefix=fd81::/64 int=eth0 publish=yes
After that, I expect that:
- ROUTER1 must get route fd82::/64 through ETH0
- ROUTER2 must get route fd80::/64 through ETH0
But, actually, nothing happened.
Could you, please, clarify, what is wrong there?
Thank you in advance.
Windows for business | Windows Server | User experience | Other
{count} votes
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Rafał Fitt 11 Reputation points2022-01-22T23:29:14.807+00:00 Hi guys,
have you managed to solve this issue/mystery?
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1 answer
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ns.88.ns 16 Reputation points
2020-09-15T16:32:34.45+00:00 -
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Anonymous2020-09-16T08:11:24.797+00:00 This is a quick note to let you know that I am currently performing research on this issue and will get back to you as soon as possible. I appreciate your patience.
If you have any updates during this process, please feel free to let me know.Best Regards,
Sunny -
ns.88.ns 16 Reputation points
2020-09-16T08:41:49.097+00:00 Hi, SunnyQi.
Thank you a lot for attention to my problem. Unfortunately, there are no updates and I still need your assistance.
One thing I observed: If I disable RA on a node:
netsh int ipv6 set int eth0 adv=disThen the node acts as end-device in this case and receives routes from the other host but (of course) advertises nothing. ND works well between end-devices and routers but doesn't work between routers. It isn't clear.
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