4000 Router Series Layer 3 - IP Services Command Reference

109

Related commands

display dns host

ipv6 dns dscp

Use ipv6 dns dscp to set the DSCP value for IPv6 DNS packets sent by an IPv6 DNS client or DNS proxy.

Use undo ipv6 dns dscp to restore the default.

Syntax

ipv6 dns dscp dscp-value

undo ipv6 dns dscp

Default

The DSCP value for IPv6 DNS packets is 0.

Views

System view

Predefined user roles

network-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