3Com 4200G Configurations are done on the devices, DNS server. The DNS server works normally

	Dynamic Domain Name Resolution Configuration Guide 331
	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=125 time=4 ms
	Reply from 3.1.1.1: bytes=56 Sequence=2 ttl=125 time=4 ms
	Reply from 3.1.1.1: bytes=56 Sequence=3 ttl=125 time=4 ms
	Reply from 3.1.1.1: bytes=56 Sequence=4 ttl=125 time=4 ms
	Reply from 3.1.1.1: bytes=56 Sequence=5 ttl=125 time=5 ms
	--- host.com ping statistics ---
	5 packet(s) transmitted
	5 packet(s) received
	0.00% packet loss
	round-trip min/avg/max = 4/4/5 ms
Complete Configuration	#
	dns resolve
	dns server 2.1.1.2
	dns domain com
Precautions	■ The routes between the DNS server, Switch, and Host are reachable. Necessary
	configurations are done on the devices.
	■ 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.