H3C Technologies H3C MSR 50 - Manual (Page 144)

1 512 Succeeded 2011-11-22 09:54:03.8
The output shows that Router A uses 512 milliseconds to obtain an IP address from the DHCP server.
DNS operation configuration example
Network requirements
As shown in Figure 40 , configure a DNS operation to test whether Device A can translate the domain
name host.com into an IP address through the DNS server, and test the time required for resolution.
Figure 40 Network diagram
Configuration procedure
# Assign each interface an IP address. (Details not shown.)
# Configure static routes or a routing protocol to make sure the devices can reach each other. (Details not
shown.)
# Create a DNS operation.
<DeviceA> system-view
[DeviceA] nqa entry admin test1
[DeviceA-nqa-admin-test1] type dns
# Specify the IP address of the DNS server 10.2.2.2 as the destination address.
[DeviceA-nqa-admin-test1-dns] destination ip 10.2.2.2
# Specify the domain name to be translated as host.com.
[DeviceA-nqa-admin-test1-dns] resolve-target host.com
# Enable the saving of history records.
[DeviceA-nqa-admin-test1-dns] history-record enable
[DeviceA-nqa-admin-test1-dns] quit
# Start the DNS operation.
[DeviceA] nqa schedule admin test1 start-time now lifetime forever
# Stop the DNS operation after a period of time.
[DeviceA] undo nqa schedule admin test1
# Display the results of the DNS operation.
[DeviceA] display nqa result admin test1
NQA entry (admin admin, tag test1) test results:
Destination IP address: 10.2.2.2
Send operation times: 1 Receive response times: 1
Min/Max/Average round trip time: 62/62/62
Square-Sum of round trip time: 3844
Last succeeded probe time: 2008-11-10 10:49:37.3
Extended results:
Packet loss in test: 0%
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