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FAQ-Can Interfaces of different rates are bound to an Eth-Trunk interface perform unevenly load sharing

Publication Date:  2014-10-31 Views:  36 Downloads:  0
Issue Description

Interfaces of different rates are bound to an Eth-Trunk interface,can it depend on the interface bandwith perform unevenly load sharing?

For example,add two physical interface to an Eth-Trunk interface,one port is 10GE,the other port is 1GE.Can these member interfaces forward data and depending on the interface bandwith perform unevenly load sharing?

Handling Process
No
Root Cause
N/A
Solution
No
Suggestions

1.This Product's every software version can support load balance traffic among member interfaces according to the weights configured for the member interfaces.
2.The higher the weight of a member interface, the heavier the load over the member link. Therefore, you can run the distribute-weight weight-value command to configure a higher weight for a member interface so that the member link can carry a heavier load. 

3.distribute-weight 1(undo distribute-weight), which forcibly sets the weight of a member interface to 1, the default value

The configuration example:
[40E-31]interface Eth-Trunk 3
[40E-31-Eth-Trunk3]display this
#
interface Eth-Trunk3
#
return
[40E-31-Eth-Trunk3]quit
[40E-31]interface GigabitEthernet 3/0/3     ---->10G Port  
[40E-31-GigabitEthernet3/0/3]eth-trunk 3
[40E-31-GigabitEthernet3/0/3]distribute-weight 15 ----> Use this command setting Member port weight 15
[40E-31-GigabitEthernet3/0/3]quit
[40E-31]interface GigabitEthernet 4/0/1     ---->1G Port  
[40E-31-GigabitEthernet4/0/1]eth-trunk 3
[40E-31-GigabitEthernet4/0/1]distribute-weight 1 ----> Use this command setting Member port weight 1
[40E-31-GigabitEthernet4/0/1]quit
[40E-31]interface GigabitEthernet 4/0/2
[40E-31-GigabitEthernet4/0/2]eth-trunk 3
Port can not be added into trunk:The weight of the trunk has reached the max!

---->A maximum of 16 member interfaces in an Eth-Trunk interface can carry out load balancing. The total weights of all member interfaces in an Eth-Trunk interface cannot be greater than 16.

NOTE:

In this example ,the weight-value are 15 and 1 .This is just for example, not a standard.

You can use display trunkmembership command to display information about the trunk member interfaces.

END