Operation Manual

270
IEEE 802.3ad
(Dynamic Link
Aggregation)
Dynamic Link Aggregation uses a complex
algorithm to aggregate adapters by speed and
duplex settings. It utilizes all slaves in the
active aggregator according to the 802.3ad
specification. Dynamic Link Aggregation mode
provides load balancing and fault tolerance but
requires a switch that supports IEEE 802.3ad
with LACP mode properly configured.
Supports 802.3ad
LACP
Balance-tlb
(Adaptive
Transmit Load
Balancing)
Balance-tlb uses channel bonding that does not
require any special switch. The outgoing traffic
is distributed according to the current load on
each Ethernet interface (computed relative to
the speed). Incoming traffic is received by the
current Ethernet interface. If the receiving
Ethernet interface fails, the other slave takes
over the MAC address of the failed receiving
slave. Balance-tlb mode provides load balancing
and fault tolerance.
General switches
Balance-alb
(Adaptive Load
Balancing)
Balance-alb is similar to balance-tlb but also
attempts to redistribute incoming (receive load
balancing) for IPV4 traffic. This setup does not
require any special switch support or
configuration. The receive load balancing is
achieved by ARP negotiation sent by the local
system on their way out and overwrites the
source hardware address with the unique
hardware address of one of the Ethernet
interfaces in the bond such that different peers
use different hardware address for the server.
This mode provides load balancing and fault
tolerance.
General switches