How to set IPv6 RA values for RDNSS and DNSSL on HPE/Aruba 5400R

[Huckabee598]

I am detail-planning the roll out of IPv6 in our company. Right now I am stuck with IPv6 RA on our HPE/Aruba Access Switches. I cannot find any documentation how to set the Recursive DNS Server (RDNSS) and DNS Search List (DNSSL) values in the RA.

I expected a command like ipv6 nd ra rdnss <ip6-of-rdnss>, but there's nothing like that.

The "HPE ArubaOS-Switch IPv6 Configuration Guide" only has the following information concerning this:

DNS options are included by default in every emitted RA unless the inclusion is suppressed via CLI commands or the SNMP MIB.

So my question is: how do I configure the RDNSS/DNSSL values in my RAs?

[akg7]

Hello @Huckabee598 ,

Below is the full statement:

"DNS options are included by default in every emitted RA unless the inclusion is suppressed via CLI commands orthe SNMP MIB. The suppress option can be configured either globally or for an IP interface.Chapter 2 IPv6 addressing configuration."

Refer pg.33 & 34 into below guide:

https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=a00076284en_us

Thanks!

[Emil_G]

Hello, 

The guide doesnt provide information how to configure the values for RDNSSL and DNSSL. There are no options to configure them per VLAN interface. So it looks the switch is sending only the global values which can be configured with the command "ip dns server-address" and "ip dns domain-name' page 303 to 305 of the same guide.

I did a quick test by configuring 2 dns servers with IPv6 addresses and different prios and a domain name. I captured the RA of this switch in Wireshark and I could see both DNS servers in the server list in the order of the priority I gave them. The DNS search list contained the domain name I configured.