Example for Configuring a DNS Test Instance
Networking Requirements
In Figure 6-27, SwitchA functions as a DNS client to access the host 10.2.1.1/24, using a domain name server.com.
Configuration Roadmap
The configuration roadmap is as follows:
Configure SwitchA as an NQA client.
Create and start a DNS test instance on the SwitchA to check whether SwitchA can set up a connection with the DNS server and to obtain the speed of responding to an address resolution request.
Procedure
- Configure IP addresses for the interfaces on the SwitchA and ensure reachable routes between SwitchA and server.com, SwitchA and the DNS server.
<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan 100
[SwitchA-vlan100] quit
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] port link-type hybrid
[SwitchA-GigabitEthernet1/0/1] port hybrid pvid vlan 100
[SwitchA-GigabitEthernet1/0/1] port hybrid untagged vlan 100
[SwitchA-GigabitEthernet1/0/1] quit
[SwitchA] interface vlanif 100
[SwitchA-Vlanif100] ip address 10.1.1.1 24
[SwitchA-Vlanif100] quit
[SwitchA] ospf
[SwitchA-ospf-1] area 0
[SwitchA-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
[SwitchA-ospf-1-area-0.0.0.0] quit
[SwitchA-ospf-1] quit
- Configure an NQA DNS test instance.
[SwitchA] dns resolve
[SwitchA] dns server 10.3.1.1
[SwitchA] nqa test-instance admin dns
[SwitchA-nqa-admin-dns] test-type dns
[SwitchA-nqa-admin-dns] dns-server ipv4 10.3.1.1
[SwitchA-nqa-admin-dns] destination-address url server.com
- Start the test instance.
[SwitchA-nqa-admin-dns] start now
- Verify the configuration.
[SwitchA-nqa-admin-dns] display nqa results test-instance admin dns
[SwitchA-nqa-admin-dns] display nqa results test-instance admin dns NQA entry(admin, dns) :testflag is inactive ,testtype is dns 1 . Test 1 result The test is finished Send operation times: 1 Receive response times: 1 Completion:success RTD OverThresholds number: 0 Attempts number:1 Drop operation number:0 Disconnect operation number:0 Operation timeout number:0 System busy operation number:0 Connection fail number:0 Operation sequence errors number:0 RTT Status errors number:0 Destination ip address: 10.3.1.1 Min/Max/Average Completion Time: 1/1/1 Sum/Square-Sum Completion Time: 1/1 Last Good Probe Time: 2012-07-20 16:23:49.1 Lost packet ratio: 0 %
Configuration Files
SwitchA configuration file
# sysname SwitchA # dns resolve dns server 10.3.1.1 # vlan batch 100 # interface Vlanif100 ip address 10.1.1.1 255.255.255.0 # interface GigabitEthernet1/0/1 port link-type hybrid port hybrid pvid vlan 100 port hybrid untagged vlan 100 # ospf 1 area 0.0.0.0 network 10.1.1.0 0.0.0.255 # nqa test-instance admin dns test-type dns destination-address url server.com dns-server ipv4 10.3.1.1 # return