Thecus N2200XXX User Manual page 179

Balance XOR
802.3ad
Balance-TLB
Balance-ALB
XOR policy: Transmit based on [(source MAC address XOR'd with
destination MAC address) modulo slave count]. This selects the same
slave for each destination MAC address. This mode provides load
balancing and fault tolerance.
IEEE 802.3ad Dynamic link aggregation. Creates aggregation groups
that share the same speed and duplex settings. Utilizes all slaves in
the active aggregator according to the 802.3ad specification.
Pre-requisites:
1. Ethtool support in the base drivers for retrieving
the speed and duplex of each slave.
2. A switch that supports IEEE 802.3ad Dynamic link
aggregation.
Most switches will require some type of configuration
to enable 802.3ad mode.
Adaptive transmit load balancing: channel bonding that does not
require any special switch support. The outgoing traffic is distributed
according to the current load (computed relative to the speed) on each
slave. Incoming traffic is received by the current slave. If the receiving
slave fails, another slave takes over the MAC address of the failed
receiving slave. receiving slave. Balance-TLB mode provides load
balancing and fault tolerance.
Adaptive load balancing: includes balance-tlb plus receive load
balancing (rlb) for IPV4 traffic, and does not require any special switch
support. The receive load balancing is achieved by ARP negotiation.
The bonding driver intercepts the ARP Replies sent by the local system
on their way out and overwrites the source hardware address with the
unique hardware address of one of the slaves in the bond such that
different peers use different hardware addresses for the server.
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