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Howto: ipv6 Router Advertisement Option DNS Server

Howto: ipv6 Router Advertisement Option DNS Server

Manfred_Huels
New Contributor
Has anybody realized a working ipv6 config in EXOS 15.1 with router advertisement for DNS Server? (RFC 6106)
I tried:
configure vlan NAME router-discovery ipv6 ...
but there is no further option.

conf vlan dhcp ...
acceptes only IPv4 Adresses

as i can see, there is no specific command for enabling these router advertisements.

regards
Manfred

6 REPLIES 6

Sumit_Tokle
Contributor
One of my customer has same type of issue couple of years back and below was the solution,

configure vlan bedvu212 router-discovery ipv6 add dnssl sumittokle.com
configure vlan bedvu212 router-discovery ipv6 add rdnss 2620:f6:8000:3::2
configure vlan bedvu212 router-discovery ipv6 add prefix 2620:f6:8000:2711::/64
configure vlan bedvu212 router-discovery ipv6 set prefix 2620:f6:8000:2711::/64 autonomous-flag on
configure vlan bedvu212 router-discovery ipv6 set prefix 2620:f6:8000:2711::/64 onlink-flag on
configure vlan bedvu212 router-discovery ipv6 set prefix 2620:f6:8000:2711::/64 preferred-lifetime 604800
configure vlan bedvu212 router-discovery ipv6 set prefix 2620:f6:8000:2711::/64 valid-lifetime 2592000
configure vlan bedvu212 router-discovery ipv6 min-interval 30
configure vlan bedvu212 router-discovery ipv6 managed-config-flag on
configure vlan bedvu212 router-discovery ipv6 other-config-flag on
enable router-discovery ipv6 vlan bedvu212
enable router-discovery ipv6 vlan cc3uc1

http://en.wikipedia.org/wiki/Comparison_of_IPv6_support_in_operating_systems

Windows does not support rdnss without a special addon. I see from the advert that the switch is sending the dnssl and rdnss. Tests on linux/mac that support this grab the dns list fine.

Rex
Extreme Employee
The command and example as following. But not all the OS an support this feature.
configure {vlan} router-discovery {ipv6} add dnssl {{dnssl-lifetime} [ | infinity]}
configure {vlan} router-discovery {ipv6} add rdnss
configure vlan v6 router-discovery ipv6 add dnssl mycompany.com
configure vlan v6 router-discovery ipv6 add rdnss
fd00:52c0:d5a9:58fb:f66d:4ff:fe42:4a82

http://en.wikipedia.org/wiki/Comparison_of_IPv6_support_in_operating_systems
GTM-P2G8KFN