User manual

87
Make sure the Ethernet interfaces are connected to the correct switch and the
switch has been configured to support the port trunking mode selected on the
NAS.
Port Trunking is available for NAS models with two or more LAN ports only.
The port trunking options available on the NAS:
Field
Description
Switch Required
Balance-rr
(Round-
Robin)
Round-Robin mode is good for general purpose
load balancing between two Ethernet
interfaces. This mode transmits packets in
sequential order from the first available slave
through the last. Balance-rr provides load
balancing and fault tolerance.
Supports static
trunking. Make
sure static
trunking is
enabled on the
switch.
Active
Backup
Active Backup uses only one Ethernet
interface. It switches to the second Ethernet
interface if the first Ethernet interface does
not work properly. Only one interface in the
bond is active. The bond's MAC address is only
visible externally on one port (network
adapter) to avoid confusing the switch. Active
Backup mode provides fault tolerance.
General switches
Balance XOR
Balance XOR balances traffic by splitting up
outgoing packets between the Ethernet
interfaces, using the same one for each
specific destination when possible. It transmits
based on the selected transmit hash policy.
The default policy is a simple slave count
operating on Layer 2 where the source MAC
address is coupled with destination MAC
address. Alternate transmit policies may be
selected via the xmit_hash_policy option.
Balance XOR mode provides load balancing and
fault tolerance.
Supports static
trunking. Make
sure static
trunking is
enabled on the
switch.
Broadcast
Broadcast sends traffic on both network
interfaces. This mode provides fault tolerance.
Supports static
trunking. Make
sure static