Layer 2 Overhead Difference between Link MTU and IP MTUEthernet (untagged) 18 bytesVLAN Tag Tag 22 bytesUntagged Packetwith VLAN-StackHeader22 bytesTagged Packet withVLAN-Stack Header26 bytesRelatedCommandsmtu – sets the link MTU for an Ethernet interface.ip name-serverEnter up to six IPv4 addresses of name servers. The order you enter the addresses determines the order of their use.C-Series, E-Series, S-Series, Z-Series, S4810Syntax ip name-server ipv4-address [ipv4-address2...ipv4-address6]To remove a name server, use the no ip name-server ip-address command.Parametersipv4-address Enter the IPv4 address, in dotted decimal format, of the name serverto be used.ipv4-address2...ipv4-address6(OPTIONAL) Enter up five more IPv4 addresses, in dotted decimalformat, of name servers to be used. Separate the addresses with aspace.Defaults No name servers are configured.Command Modes CONFIGURATIONCommand History Version 8.3.11.1 Introduced on the Z9000.Version 8.3.7.0 Introduced on the S4810.Version 8.1.1.0 Introduced on the E-Series ExaScale.Version 7.6.1.0 Introduced on the S-Series.Version 7.5.1.0 Introduced on the C-Series.pre-Version6.1.1.0Introduced on the E-Series.UsageInformationFTOS does not support sending DNS queries over a VLAN. DNS queries are sent out on allother interfaces, including the Management port.792
