Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 446
Enabling Dynamic Resolution of Host Names, Specifying the Local System Domain and a List of Domains
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In a dual stack setup, the system sends both A ( for IPv4 - RFC 1035) and AAAA ( for IPv6 - RFC 3596) record requests to a DNS server even if you configure only the ip name-server command. The following sections describe DNS and the resolution of host names. • Enabling Dynamic Resolution of Host Names • Specifying the Local System Domain and a List of Domains • Configuring DNS with Traceroute Name server, Domain name, and Domain list are VRF specific. The maximum number of Name servers and Domain lists per VRF is six. Enabling Dynamic Resolution of Host Names By default, dynamic resolution of host names (DNS) is disabled. To enable DNS, use the following commands. • Enable dynamic resolution of host names. CONFIGURATION mode ip domain-lookup • Specify up to six name servers. CONFIGURATION mode ip name-server ip-address [ip-address2 ... ip-address6] The order you entered the servers determines the order of their use. Example of the show hosts Command To view current bindings, use the show hosts command. DellEMC>show host Default domain is force10networks.com Name/address lookup uses domain service Name servers are not set Host Flags TTL Type Address ---- ------- ks (perm, OK) - IP 2.2.2.2 patch1 (perm, OK) - IP 192.68.69.2 tomm-3 (perm, OK) - IP 192.68.99.2 gxr (perm, OK) - IP 192.71.18.2 f00-3 (perm, OK) - IP 192.71.23.1 DellEMC> To view the current configuration, use the show running-config resolve command. Specifying the Local System Domain and a List of Domains If you enter a partial domain, Dell EMC Networking OS can search different domains to finish or fully qualify that partial domain. A fully qualified domain name (FQDN) is any name that is terminated with a period/dot. Dell EMC Networking OS searches the host table first to resolve the partial domain. The host table contains both statically configured and dynamically learnt host and IP addresses. If Dell EMC Networking OS cannot resolve the domain, it tries the domain name assigned to the local system. If that does not resolve the partial domain, Dell EMC Networking OS searches the list of domains configured. To configure a domain name or a list of domain names, use the following commands. • Enter up to 63 characters to configure one domain name. CONFIGURATION mode ip domain-name name 446 IPv4 Routing
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