Specifying The Dscp Value For Outgoing Dns Packets; Displaying And Maintaining Ipv4 Dns; Ipv4 Dns Configuration Examples; Static Domain Name Resolution Configuration Example - H3C MSR 2600 Configuration Manual

Specifying the DSCP value for outgoing DNS
packets
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.
To specify the DSCP value for outgoing DNS packets:
Step
1. Enter system view.
2. Specify the DSCP value
for outgoing DNS
packets.

Displaying and maintaining IPv4 DNS

Execute display commands in any view and reset commands in user view.
Task
Display the domain name resolution
table.
Display IPv4 DNS server information.
Display IPv6 DNS server information.
Display DNS suffixes.
Clear information about the dynamic
domain name cache.

IPv4 DNS configuration examples

Static domain name resolution configuration example

Network requirements
As shown in
rather than an IP address.
Configure static domain name resolution on the device so that the device can use the domain name
host.com to access the host whose IP address is 10.1.1.2.
Command
system-view
•
•
Figure 32, the device wants to access the host by using an easy-to-remember domain name
DSCP value for IPv4 DNS packets:
dns dscp dscp-value
DSCP value for IPv6 DNS packets:
ipv6 dns dscp dscp-value
Command
display dns host [ ip | ipv6 ] [ vpn-instance vpn-instance-name ]
display dns server [ dynamic ] [ vpn-instance vpn-instance-name ]
display ipv6 dns server [ vpn-instance vpn-instance-name ]
display dns domain [ dynamic ] [ vpn-instance vpn-instance-name ]
reset dns host [ ip | ipv6 ] [ vpn-instance vpn-instance-name ]
90
Remarks
N/A
By default, the DSCP value for
outgoing DNS packets is 0.
The configuration is available on
DNS clients and DNS proxy
devices.