User guide

uNAS/tNASUserGuideVersion1.0 Page19
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Function: Create new bond interface
Bonding allows for load-balancing or fail-over for the incoming and outgoing connections. Here
you can create or edit bonding network interface. In order to create bonding interface:
• select network interfaces from which you want to create a new bonding interface.
• select desired bonding mode from Create drop down menu.
• select dynamic (DHCP) or static configuration of network interface.
• if you want to dynamically get DNS address, select "get DNS".
• when using static configuration of network interface enter address IP, netmask, broadcast
and gateway apply Create button, new bonding interface will be created now.
In order to take advantage of bonding more than one Ethernet NIC needs to be plugged into
the box.
Each network interface is described by following fields:
• Primary - A string (eth0, eth2, etc) specifying which slave is the primary device. The
specified device will always be the active slave while it is available. Only when the primary is
off-line will alternate devices be used. This is useful when one slave is preferred over
another, e.g., when one slave has higher throughput than another. The primary option is
only valid for active-backup mode.
• Interface - Network interface name.
• Cable - Shows if cable is connected to NIC.
• State - Describes state of the network interface. NIC can be in bonding state or single.
Bonding modes:
• balance-rr : Transmissions are received and sent out sequentially on each bonded slave
interface. This mode provides fault tolerance and load balancing.
• active-backup : Only one slave in the bond is active. Another bonded slave interface is only
used if the active bonded slave interface fails. This mode provides fault tolerance.