Manual

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mapping them to Internet Protocol (IP) networks by designating authoritative name 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.
63.2 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
function.
2. To configure/delete DNS server
Command
Explanation
Global Mode
dns-server {<ip-address> | <ipv6-
address>} [priority <value>]
no dns-server {<ip-address> | <ipv6-
address>}
To configure DNS server, the no form of this
command deletes DNS server.
3. To configure/delete domain name suffix
Command
Explanation
Global Mode