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67
Table of Contents
Linksys
67
Table of Contents
Linksys
Chapter 11 IP Network
Operations
IP Network Operations
This section covers the following topics:
•
Domain Name System
•
DHCP
•
DHCP Snooping Binding Database
•
Interface Settings
Domain Name System
The Domain Name System (DNS) translates domain names into IP addresses for
the purpose of locating and addressing hosts
As a DNS client, the device resolves domain names to IP addresses through the
use of one or more configured DNS servers
DNS
Use the DNS page to enable the DNS feature, configure the DNS servers and set
the default domain used by the device
STEP 1 Click Configuration > IP Network Operations > Domain Name System
> DNS
STEP 2 Enter the following fields:
•
DNS—Select to designate the device as a DNS client, which can resolve
•
DNS names into IP addresses through one or more configured DNS servers
•
Default Domain Name—Enter the DNS domain name used to complete
unqualified host names The device appends this to all non-fully qualified
domain names (NFQDNs) turning them into FQDNs
The following fields are displayed for each configured DNS server:
•
DNS Server IP Address—IP address of the DNS server
•
IP Interface—Interface connected to DNS server
•
Preference—Each server has a preference value, a lower value means a
higher chance of being used
•
Configuration Source—Source of the server’s IP address (static or DHCPv4
or DHCPv6)
STEP 3 Up to eight DNS servers can be defined To add a DNS server, click Add
Enter the parameters
•
IP Version—Select Version 6 for IPv6 or Version 4 for IPv4
•
IPv6 Address Type—Select the IPv6 address type (if IPv6 is used) The
options are the following:
•
Global—The IPv6 address is a global Unicast IPV6 type that is visible
and reachable from other networks
•
Link Local—The IPv6 address uniquely identifies hosts on a single
network link A link local address has a prefix of FE80, is not routable,
and can be used for communication only on the local network Only
one link local address is supported If a link local address exists on the
interface, this entry replaces the address in the configuration
•
Interface—If the IPv6 address type is Link Local, select the interface
through which it is received
•
DNS Server IP Address—Enter the DNS server IP address
Server Settings
•
Preference—Select a value that determines the order in which the
domains are used (from low to high) This effectively determines the order
in which unqualified names are completed during DNS queries
STEP 4 Click Apply The DNS server is saved to the Running Configuration file
DHCP
This section describes DHCP configuration It covers the following topics:
•
Overview
•
DHCP Snooping
•
DHCP Interfaces
•
DHCP Snooping Trusted Interface
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