Allied Telesis AT-S62 - Manual (Page 128)

Chapter 8: Port Trunking
Section I: Basic Operations 128
Even though there is only one source, all the data links in the trunk are
used. For instance, if the server needs to send a packet to workstation C,
by referring to the matrix Switch #2 would use port 3 of the trunk to
transmit the packet from that particular source MAC address to Switch
#1.
This method is useful when a port trunk needs to send packets from one
source node to many destination nodes, something that the source
address method is not suited for. This method is also valid when sending
from many source nodes to one destination node, or from many sources
to many destinations.
Table 4 shows a possible matrix for a port trunk of three data links using
this method to handle traffic from four sources to four destinations.
As a general rule, the source address/destination address distribution
method is more flexible than the source address or destination address
method alone. If you are not sure which load distribution to choose, use
this method.
Table 3 Switch #2 - Source MAC Address/Destination MAC Address Method
Destinations MAC Addresses
Source MAC Address
Workstation
A
00A0EE
2313A3
Workstation
B
00A134
1A9032
Workstation
C
00A301
9083B2
Workstation
D
001B21
87C6D6
Server
00B012 DA0231 2 1 3 1
Table 4 Source MAC Address/Destination MAC Address Load Distribution Method
Destination MAC Addresses
Source MAC
Addresses 00A0EE
2313A3 00A134
1A9032 00A301
9083B2 001B21
87C6D6
00B012 DA0231 1 2 3 1
001230 DA2943 2 3 1 2
0042AA D45A21 3 1 2 3
00456A C23521 1 2 3 1