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DES-7200 Configuration Guide Chapter 3 Aggregate Port
Configuration
3-3
packets. If layer2 packets are received under this mode, traffic balancing is
performed automatically according to the default device setting.
The traffic balancing based on the combination of source IP address and
destination IP address refers to distribute the traffic on the member links of an
AP according to the combination of source IP address and destiantion IP
address of packets. Those packets with different source and destination IP
addresses are evenly distributed on the member links of an AP according to
different source and destination IP addresses. Those packets with the same
source IP address and destination IP address are forwarded through the same
member link. This mode is specific for Layer 3 packets. If layer2 packets are
received under this mode, traffic balancing is performed automatically according
to the default device setting.
All the abovementioned balancing modes are applicable to AP on Layer 2 and
Layer 3.
Table-1 lists the traffic balancing modes supported on different switch models,
wherein “√” indicates support, “
×” indicates no support.
Traffic
Balancing
Mode
Source
MAC-based
Destination
MAC-based
Source+Desti
nation
MAC-based
Source
IP-based
Destinati
on
IP-based
Source+D
estination
IP-based
DES-7200
√ √ √ √ √ √
An appropriate traffic distribution method should be set according to the actual
network environments, so that the traffic can be evenly distributed on the the
links for the maximum utilization of network bandwidth.
In the following diagram, a switch communicates with a router through an AP,
and the router serves as the gateway for all the devices inside the network
(such as 4 PCs on the top of the diagram). The source MAC addresses of all the
packets that the devices outside the network (such as 2 PCs at the bottom of
the diagram) send through the router are the MAC address of the gateway. In
order to distribute traffic between the router and other hosts on other links,
traffic balancing should be performed based on the destination MAC address.
However, traffic balancing should be performed based on the source MAC
address on the switch.
Note
When the traffic balancing mode is source IP address-based, destination IP
address-based, or source IP address and destination IP address-based traffic
balancing mode, Layer 2 packets are distributed under the default device
mode. You can execute show aggregateport load-balance command to get
the default device mode before setting the parameter aggregateport
load-balance.