3com 4210 PWR 9-Port 3CR17341-91-ME User Manual

    0.00% packet loss

 

    round-trip min/avg/max = 2/3/5 ms 

As shown in Figure 199, the switch serving as a DNS client uses dynamic domain 
name resolution to access the host at 3.1.1.1/16 through its domain name host. 
The DNS server has the IP address 2.1.1.2/16. The DNS suffix is com.

Figure 199   Network diagram for dynamic DNS configuration

n 

■

The routes between the DNS server, Switch, and Host are reachable.

■

Necessary configurations are done on the devices. For the IP addresses of the 
interfaces, see the figure above.

■

There is a mapping between domain name host and IP address 3.1.1.1/16 on 
the DNS server.

■

The DNS server works normally.

# Enable dynamic domain name resolution.

<4210> system-view

 

[4210] dns resolve 

# Configure the IP address 2.1.1.2 for the DNS server.

[4210] dns server 2.1.1.2 

# Configure com as the DNS suffix

[4210] dns domain com 

Execute the ping host command on Switch to verify that the communication 
between Switch and Host is normal and that the corresponding IP address is 
3.1.1.1.

[4210] ping host

 

 Trying DNS server (2.1.1.2)

 

  PING host.com (3.1.1.1): 56  data bytes, press CTRL_C to break

 

    Reply from 3.1.1.1: bytes=56 Sequence=1 ttl=255 time=3 ms

 

2.1.1.2/16

2.1.1.1

Switch

1.1.1/16

host. com

IP network

Host

/16

1.

3.1.1.1/ 16