Configuring The Dns Proxy - HPE FlexNetwork HSR6800 Configuration Manual

server address manually specified takes priority over a DNS server address dynamically
obtained, for example, through DHCP. The device first sends a DNS query to the DNS server
address of the highest priority. If the first query fails, it sends the DNS query to the DNS server
address of the second highest priority, and so on.
•
You can configure a maximum of 16 DNS suffixes for the public network or each VPN instance.
You can configure DNS suffixes for both public network and VPN instances.
•
A DNS suffix manually configured takes priority over a DNS suffix dynamically obtained, for
example, through DHCP. A DNS suffix configured earlier has a higher priority. The device first
uses the suffix that has the highest priority. If the query fails, the device uses the suffix that has
the second highest priority, and so on.
Configuration procedure
To configure dynamic domain name resolution:
Step
1. Enter system view.
2. (Optional.) Configure a
DNS suffix.
3. Specify a DNS server
IPv4 address in system
view.
4. Specify a DNS server
IPv4 address in
interface view.
5. Specify a DNS server
IPv6 address.

Configuring the DNS proxy

You can specify multiple DNS servers. The DNS proxy forwards a request to the DNS server that has
the highest priority. If having not received a reply, it forwards the request to a DNS server that has the
second highest priority, and so on.
A DNS proxy forwards an IPv4 name query first to IPv4 DNS servers. If no reply is received, it
forwards the request to IPv6 DNS servers.
A DNS proxy forwards an IPv6 name query first to IPv6 DNS servers. If no reply is received, it
forwards the request to IPv4 DNS servers.
To configure the DNS proxy:
Step
1. Enter system view.
2. Enable DNS proxy.
3. Specify a DNS server
IPv4 address in system
view.
Command
system-view
dns domain domain-name [ vpn-instance
vpn-instance-name ]
dns server ip-address [ vpn-instance
vpn-instance-name ]
a Enter interface view:
interface interface-type
interface-number
b Specify a DNS server IPv4 address:
dns server ip-address [ vpn-instance
vpn-instance-name ]
ipv6 dns server ipv6-address
[ interface-type interface-number ]
[ vpn-instance vpn-instance-name ]
Command
system-view
dns proxy enable
dns server ip-address [ vpn-instance
vpn-instance-name ]
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Remarks
N/A
By default, no DNS suffix is
configured and only the
domain name that a user
enters is resolved.
Perform one or more of the
tasks.
By default, no DNS server
address is specified.
Remarks
N/A
By default, DNS proxy is
disabled.
Perform one or more of the
tasks.