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Figure 42 Network diagram
Procedure
Before performing the following configuration, make sure that:
• Device A, the DNS server, and the host can reach each other.
• The IP addresses of the interfaces are configured as shown in Figure 42.
1. Config
ure the DNS server:
The configuration might vary by DNS server. When a PC running Windows Server 2008 R2 acts
as the DNS server, see "Example: Configuring dynamic domain name resolution" for
config
uration information.
2. Configure the DNS proxy:
# Specify the DNS server 4.1.1.1.
<DeviceA> system-view
[DeviceA] dns server 4.1.1.1
# Enable DNS proxy.
[DeviceA] dns proxy enable
3. Configure the DNS client:
<DeviceB> system-view
# Specify the DNS server 2.1.1.2.
[DeviceB] dns server 2.1.1.2
Verifying the configuration
# Verify that DNS proxy on Device A functions.
[DeviceB] ping host.com
Ping host.com (3.1.1.1): 56 data bytes, press CTRL_C to break
56 bytes from 3.1.1.1: icmp_seq=0 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=1 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=2 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=3 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=4 ttl=255 time=2.000 ms
--- Ping statistics for host.com ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.000/1.200/2.000/0.400 ms
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