XGS-5240-Series User Manual

Configuration Guide of XGS-5240-Series
69-2
Pv6). People take advantage of this when they recite meaningful URLs and e-mail addr
esses without having to know how the machine will actually locate them.
The Domain Name System distributes the responsibility for assigning domain name
s and mapping them to Internet Protocol (IP) networks by designating authoritative nam
e servers for each domain to keep track of their own changes, avoiding the need for a
central register to be continually consulted and updated.
In general, the Domain Name System also stores other types of information, such
as the list of mail servers that accept email for a given Internet domain. By providing a
world-wide, distributed keyword-based redirection service, the Domain Name System is
an essential component of the functionality of the Internet.
69.2 DNSv4/v6 Configuration Task List
1. To enable/disable DNS function
2. To configure/delete DNS server
3. To configure/delete domain name suffix
4. To delete the domain entry of specified address in dynamic cache
5. To enable DNS dynamic domain name resolution
6. Enable/disable DNS SERVER function
7. Configure the max number of client information in the switch queue
8. Configure the timeout value of caching the client information on the switch
9. Monitor and diagnosis of DNS function
1. To enable/disable DNS function
Command
Explanation
Global Mode
ip domain-lookup
no ip domain-lookup
To enable/disable DNS dynamic lookup f
unction.
2. To configure/delete DNS server
Command
Explanation
Global Mode
dns-server {<ip-address> | <ipv6-addr
ess>} [priority <value>]
no dns-server {<ip-address> | <ipv6-a
ddress>}
To configure DNS server, the no form of
this command deletes DNS server.
3. To configure/delete domain name suffix