C122-B001-02EN
5-31
5.3 Notes on System Design
Figure 5.12 Example of flow control
5.3.6
LinkAggregation load distribution
Load distribution algorithm
A key is created from the address (MAC address or IP address) of a send frame.
Based on the key and the number of ports that make up LinkAggregation, a modulo
calculation is performed and the transfer destination port is determined using the
result of the modulo calculation.
A key is created according to the load distribution method as shown below.
Table 5.21 Load distribution algorithm
Example of load distribution
• Port configuration: Ports 1, 2, and 3 constitute LinkAggregation.
• Load distribution method: Source MAC address
No. Load distribution method
Key
1
Source MAC address
3 low-order bits of source MAC address
2
Destination MAC address
3 low-order bits of destination MAC address
3
Combination of source and
destination MAC addresses
3 low-order bits of exclusive-OR of source and destination
MAC addresses
4
Source IP address
3 low-order bits of source IP address
5
Destination IP address
3 low-order bits of destination IP address
6
Combination of source and
destination IP addresses
3 low-order bits of exclusive-OR of source and destination
IP addresses
BCM5692 #0
BCM5692 #1
GigabitEthernet 0/8
GigabitEthernet 0/7
GigabitEthernet 0/4
GigabitEthernet 0/3
GigabitEthernet 0/6
GigabitEthernet 0/5
GigabitEthernet 0/2
GigabitEthernet 0/1
IOU 0 0
IOU 3 1
IOU 4 0
IOU 7 1
PAUSE frame
Summary of Contents for PRIMEQUEST 440
Page 1: ...C122 B001 02EN Front Cover SYSTEM DESIGN GUIDE ...
Page 2: ......
Page 6: ......
Page 8: ......
Page 14: ......
Page 16: ...viii C122 B001 02EN NOTE ON SAFETY Rear view Unit rear ...
Page 18: ...x C122 B001 02EN NOTE ON SAFETY PCI_Box Left side view Front view without cover ...
Page 20: ......
Page 106: ......
Page 127: ...C122 B001 02EN 4 21 4 2 MMB Functions Figure 4 15 Console Redirection Switch screen ...
Page 178: ...5 34 C122 B001 02EN CHAPTER 5 Business LAN Management by GSWB ...
Page 208: ......
Page 218: ......
Page 234: ......
Page 248: ......
Page 264: ......
Page 276: ......
Page 279: ......
Page 280: ...Back Cover ...