Modifying network interface settings using the storage system command line

You can modify the parameters of your network interface settings using the command line of your storage system. For example, you can configure an IP address for a specific interface or specify a subnet mask.

Step

1. To set specific network interface parameters, enter one of the following commands:

   If you want to ...	Enter this command ..
   Configure an IP address for the specified interface	ifconfig interface_name IP_address Note: By default, your storage system creates a network mask based on the class of the address (Class A, B, C, or D). However, if you have created subnets that do not match the class boundary of the IPv4 address, you must specify a network mask. Example: To configure a quad-port Ethernet interface e3a to use the IPv4 address 192.168.25.10, enter: ifconfig e3a 192.168.25.10 To configure a quad-port Ethernet interface e3a to use the IPv6 address 2001:0db8:35ab:0:8a2e:0:0370:85, enter: ifconfig e2a 2001:0db8:35ab:0:8a2e:0:0370:85
   Specify a subnet mask for the specified interface	ifconfig interface_name netmask mask Example: To configure a 24-bit mask for the interface e3a configured in the previous example, enter: ifconfig e3a netmask 255.255.255.0 Note: You can specify subnet mask only for interfaces with IPv4 addresses.
   Specify the prefix length (number of bits used as the subnet mask) for the specified interface	ifconfig interface_name ip_address prefixlen length Example: To configure a prefix length of 64 bits, enter: ifconfig e3a 2001:0db8:35ab:0:8a2e:0:0370:85 prefixlen 64 Note: For an IPv4 address, the prefix length must be less than or equal to 32 bits. For an IPv6 address, the prefix length must be less than or equal to 128 bits. The default value of prefix length is 64 bits.
   Specify an address to send a message to all machines on a network	ifconfig interface_name broadcast address Example: To set a broadcast address of 192.168.25.250 for the network 192.168.25.10 with subnet mask 255.255.255.0, enter: ifconfig e3a broadcast 192.168.25.250 Note: You can set a broadcast address only for interfaces configured with IPv4 addresses.
   Specify a media type to configure speed and duplex for an interface	ifconfig interface_name mediatype value Example: To configure the interface e2a as a 100Base-TX full-duplex interface, enter: ifconfig e2 mediatype 100tx-fd
   Specify an MTU size for transmission between your storage system and its client	ifconfig interface_name mtusize size Example: To specify an MTU size of 9000 for Gigabit Ethernet interface e8, enter: ifconfig e8 mtusize 9000
   Specify the flow control type	ifconfig interface_name flowcontrol value Example: To turn off flow control on interface e8, enter: ifconfig e8 flowcontrol none
   Remove a primary IP (IPv4 or IPv6) address	ifconfig interface_name 0 To remove an IPv4 primary address, you can also use:ifconfig interface_name 0.0.0.0 To remove an IPv6 primary address, you can use either of these commands: ifconfig interface_name 0::0 ifconfig interface_name inet6 0 Example: To remove the primary address of interface e3, enter: ifconfig e3 0 Note: You can remove an IPv4 or IPv6 primary address only after removing all the manually configured alias addresses for the interface.
   Declare an interface to be trustworthy or untrustworthy	ifconfig interface_name {trusted|untrusted} Example: To specify that the network attached to interface e8 is not trustworthy for firewall security, enter: ifconfig e8 untrusted When you specify an interface as untrusted (untrustworthy), any packets received on the interface are likely to be dropped. For example, if you run a ping command on an untrusted interface, the ICMP response packet received on the interface is dropped.
   Enable or disable an interface to register with WINS when CIFS is running (By default, network interfaces are registered with a WINS server when CIFS is running.)	ifconfig interface_name {wins|-wins} Example: To disable interface e8 from registering with WINS servers, enter: ifconfig e8 -wins
   Specify the IP address of an interface on the active/active configuration partner and to specify the interface that assumes this interface during takeover	ifconfig interface_name partner address Example: To specify the IP address on an interface on the active/active configuration partner that assumes the interface e8 if the partner fails, enter: ifconfig e8 partner 192.168.25.10 Note: You can specify only a IPv4 address for takeover in an active/active configuration.
   Specify the name of an interface on the active/active configuration partner that takes over the partner interface during failure	ifconfig interface_name partner interface_name Example: To specify e3 as the interface on the active/active configuration partner that takes over the interface e8 when e8 fails, enter: ifconfig e8 partner e3
   Specify the IP address on an interface on the active/active configuration partner that assumes the interface	ifconfig interface_name nfo Example: To enable negotiated failover on an interface e8 of an active/active configuration, enter: ifconfig e8 nfo Note: Remember to enable the cf.takeover.on_network_interface_failure option after enabling negotiated failover with the preceding command. This works in tandem with the active/active configuration takeover option cf.takeover.on_network_interface_failure . If the nfo parameter is on for an interface and the active/active configuration option is enabled, negotiated takeover between the configuration nodes can occur if the network interface fails. An interface that is a part of a vif cannot use this parameter. You must include this option in the /etc/rc file for it to persist across reboots.