R211x-HP Flexfabric 11900 Layer 3 - IP Services Command Reference

119
Predefined user roles
network-admin
mdc-admin
Parameters
dscp-value: Sets the DSCP value for outgoing IPv6 DNS packets, in the range of 0 to 63.
Usage guidelines
The DSCP value of a packet specifies the priority level of the packet and affects the transmission priority
of the packet. A bigger DSCP value represents a higher priority.
Examples
# Set the DSCP value for outgoing IPv6 DNS packets to 30.
<Sysname> system-view
[Sysname] ipv6 dns dscp 30
ipv6 dns server
Use ipv6 dns server to specify a DNS server IPv6 address.
Use undo ipv6 dns server to remove the specified DNS server IPv6 address. If you do not specify any
IPv6 address, the undo ipv6 dns server command removes all DNS server IPv6 addresses on the public
network or the specified VPN.
Syntax
ipv6 dns server ipv6-address [ interface-type interface-number ] [ vpn-instance vpn-instance-name ]
undo ipv6 dns server [ ipv6-address [ interface-type interface-number ] ] [ vpn-instance
vpn-instance-name ]
Default
No DNS server IPv6 address is specified.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
ipv6-address: Specifies the IPv6 address of a DNS server.
interface-type interface-number: Specifies the output interface by its type and number. If you do not
specify any interface, the device forwards DNS packets out of the output interface of the matching route.
You must specify the output interface when the IPv6 address of the DNS server is a link-local address.
vpn-instance vpn-instance-name: Specifies the name of an MPLS L3VPN instance, a case-sensitive string
of 1 to 31 characters. To specify a DNS server IPv6 address on the public network, do not use this option.
Usage guidelines
For dynamic DNS, the device sends DNS query request to the IPv6 DNS servers in the order their IPv6
addresses are specified.