Dell SmartFabric OS10 User Guide Release 10.5.3

Configure recursive DNS server lists

To configure a DNS server address to advertise for an interface in RA messages:

1. Enter CONFIGURATION mode.

   OS10# configure terminal
   OS10(config)#

2. Enter Interface Configuration mode.

   OS10(config)# interface ethernet 1/1/11

3. Configure the interface as a Layer 3 routed interface and bring the interface administratively up.

   OS10(conf-if-eth1/1/11)# no switchport
   OS10(conf-if-eth1/1/11)# no shutdown

4. Configure the IPv6 prefix to advertise in router advertisement (RA) messages.

   OS10(conf-if-eth1/1/11)# ipv6 nd prefix 150::1/64

5. Enable sending ICMPv6 RA messages.

   OS10(conf-if-eth1/1/11)# ipv6 nd send-ra

6. Configure the recursive DNS server with sequence number 1 and lifetime 2000.

   OS10(conf-if-eth1/1/11)# ipv6 nd ra-dns server seq 1 2001:4860:4860::8888 2000

7. Configure the recursive DNS server with sequence number 1 and lifetime 2000.

   OS10(conf-if-eth1/1/11)# show configuration
   !
   interface ethernet1/1/11
   no shutdown
   no switchport
   ipv6 nd prefix 150::1/64
   ipv6 nd ra-dns server seq 1 2001:4860:4860::8888 2000
   ipv6 nd send-ra
   flowcontrol receive on

To suppress advertising the configured recursive DNS server list, use the ipv6 nd ra-dns server suppress command.