136
Views
System view
Predefined user roles
network-admin
Parameters
dscp-value: Specifies the DSCP value 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 to 30 for outgoing IPv6 DNS packets.
<Sysname> system-view
[Sysname] ipv6 dns dscp 30
ipv6 dns server
Use ipv6 dns server to specify the IPv6 address of a DNS server.
Use undo ipv6 dns server to remove the IPv6 address of a DNS server.
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
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 an interface, the device forwards DNS packets out of the output interface of the matching
route. Specify this argument if the IPv6 address of the DNS server is a link-local address. Do not
specify this argument if the IPv6 address of the DNS server is a global unicast address.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a
case-sensitive string of 1 to 31 characters. To specify a DNS server IPv6 address for the public
network, do not use this option.
Usage guidelines
For dynamic DNS, the device sends a DNS query request to the DNS servers in the order their IPv6
addresses are specified.
The system allows a maximum of six DNS server IPv6 addresses for the public network or each VPN
instance. You can specify DNS server IPv6 addresses for both public network and VPN instances.
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