Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 460
Directed Broadcast, Resolution of Host Names, Enable dynamic resolution of host names
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www.dell.com | support.dell.com Directed Broadcast By default, FTOS drops directed broadcast packets destined for an interface. This default setting provides some protection against Denial of Service (DOS) attacks. To enable FTOS to receive directed broadcasts, use the following command in the INTERFACE mode: Command Syntax ip directed-broadcast Command Mode Purpose INTERFACE Enable directed broadcast. To view the configuration, use the show config command in the INTERFACE mode. Resolution of Host Names Domain Name Service (DNS) maps host names to IP addresses. This feature simplifies such commands as Telnet and FTP by allowing you to enter a name instead of an IP address. Dynamic resolution of host names is disabled by default. Unless the feature is enabled, the system resolves only host names entered into the host table with the ip host or ipv6 host command. • Enable dynamic resolution of host names • Specify local system domain and a list of domains • DNS with traceroute Enable dynamic resolution of host names By default, dynamic resolution of host names (DNS) is disabled. To enable DNS, use the following commands in the CONFIGURATION mode: Command Syntax Command Mode ip domain-lookup CONFIGURATION ip name-server ipv4-address CONFIGURATION [ipv4-address2 ... ipv4-address6] ipv6 name-server ipv6-address [ipv6-address2 ... ipv6-address6] Purpose Enable dynamic resolution of host names. Specify up to 6 IPv4 or IPv6 name servers. The order you entered the servers determines the order of their use. You may have IPv4 and IPv6 name servers configured at the same time. 460 | IPv4 Addressing
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