R21xx-HP FlexFabric 11900 Layer 3 IP Services Configuration Guide

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In addition, you can configure a DNS suffix that the system automatically adds to the provided domain
name for resolution. A DNS suffix manually configured takes precedence over the one dynamically
obtained through DHCP, and a DNS suffix configured earlier takes precedence. The DNS resolver first
uses the suffix that has the highest priority. If the name resolution fails, the DNS resolver uses the suffix that
has the second highest priority, and thus in turn.
Configuration guidelines
Follow these guidelines when you configure dynamic domain name resolution:
• You can specify DNS server IPv4 addresses for the public network and up to 1024 VPNs, and
specify a maximum of six DNS server IPv4 addresses for the public network or each VPN.
• You can specify DNS server IPv6 addresses for the public network and up to 1024 VPNs, and
specify a maximum of six DNS server IPv6 addresses for the public network or each VPN.
• An IPv4 name query is first sent to the DNS server IPv4 addresses. If no reply is received, it is sent
to the DNS server IPv6 addresses.
• You can specify domain name suffixes for the public network and up to 1024 VPNs, and specify
a maximum of 16 domain name suffixes for the public network or each VPN.
Configuration procedure
To configure dynamic domain name resolution:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Specify a DNS server IP
address.
• Specify a DNS server IPv4 address:
dns server ip-address [ vpn-instance
vpn-instance-name ]
• Specify a DNS server IPv6 address:
ipv6 dns server ipv6-address
[ interface-type interface-number ]
[ vpn-instance vpn-instance-name ]
Use at least one command.
By default, no DNS server IP
address is specified.
3. (Optional.) Configure a
DNS suffix.
dns domain domain-name [ vpn-instance
vpn-instance-name ]
By default, no DNS suffix is
configured and only the
provided domain name is
resolved.
Configuring the IPv6 DNS client
Configuring static domain name resolution
Static domain name resolution allows applications such as Telnet to contact hosts by using host names
instead of IPv6 addresses.
Follow these guidelines when you configure static domain name resolution: