ifconfig -a | grep -ioE '(.)/ & print $1'Ĭoreutils. The same regex also works with PCREs ( -P). The -i makes the match case insensitive and the -o makes grep print only the matched portion. InetAddress address InetAddress.getLocalHost () NetworkInterface nwi NetworkInterface.getByInetAddress (address) byte mac nwi. Here, I am looking for 5 repetitions of 2 letters or numbers followed by a colon, then any two characters. You can have multiple NICs in a single system and therefore multiple MAC addresses as well. There are various regular expressions that will pick these up. Given that, the virtual MAC address you configure allows the HA node to appear as a single system from the perspective of other network devices.Grep. When there is a switchover, the standbyīroker sends out an ARP message using the virtual MAC address, establishing that MAC on another physical port within the Ethernet switch.Ī MAC address is a hardware address that uniquely identifiesīroker components.

The HA node uses shared virtual MAC (media access control) and virtual IP addresses for the interfaces. It is recommended that you retain this configuration. This field is automatically populated with a valid virtual MAC address during You enter these addresses in virtual MAC address parameters for physical interface configurations. To create an HA node, you create virtual MAC addresses for the media interfaces. Steps 2 and 3 to add another network interface (up to 4 total). ip a In the screenshot below, we have highlighted our MAC address for the enp0s3 interface. (This address moves to which ever peer is The utility IP address for the primary peer to use.Įnter the utility IP address for the secondary peer The arrow control to display the HA parameters. Internet Control Message Protocol (ICMP) traffic on this interface and respondĪvailability, check this checkbox to allow the network interface to continually Select which NOTIFY messages for provisional To terminate and process SIP REFER messages. You can set an additional, secondary gateway with the sec-gateway parameter.Įnter an alternate IP address for the targeted DNS

The gateway that this network interface uses to communicate with the next hop. Net mask of this network interface in dotted decimal notation. If this network interface is not channelized, leave this field blank, and Of a specific virtual interface in a physical interface, for example, a VLAN

Get mac address linux java