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FAQ: How Can the LACP Mode Be Checked?

Publication Date:  2013-09-03 Views:  24 Downloads:  0
Issue Description
How can the LACP mode be checked?
Handling Process
N/A
Root Cause
N/A
Solution

When configuring an Eth-Trunk on the NE40E, you can set the port mode to LACP. LACP supports fast and slow modes. In fast LACP mode, the timeout interval is 3s; in slow LACP mode, the timeout interval is 90s.
Run the display eth-trunk 0 command.
display eth-trunk 0
Eth-Trunk0's state information is:

Local:
LAG ID: 0                   WorkingMode: STATIC                               
Preempt Delay:
Disabled     Hash arithmetic: According to flow               
System Priority:
32768      System ID: 781d-ba54-0956                        
Least Active-linknumber:
1  Max Active-linknumber: 16                        
Operate status:
up          Number Of Up Port In Trunk: 5                    
--------------------------------------------------------------------------------
ActorPortName          Status   PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet2/0/1   Selected 1GE      32768   513    49      1 1111100  1 
GigabitEthernet2/0/2   Selected 1GE      32768   514    49      1 1111100  1    
GigabitEthernet2/0/3   Selected 1GE      32768   515    49      1 1111100  1    
GigabitEthernet2/0/4   Selected 1GE      32768   516    49      1 1111100  1    
GigabitEthernet2/0/0   Selected 1GE      32768   512    49      1 1111100  1 


Note: The second digit 0 of PortState indicates the fast LACP mode on the local end, and the second digit 1 of PortState indicates the slow LACP mode on the local end.

Partner:
--------------------------------------------------------------------------------
ActorPortName          SysPri    SystemID  PortPri PortNo  PortKey   PortState
GigabitEthernet2/0/1   100    0025-9efb-effc  32768  258   49        1 0111100
GigabitEthernet2/0/2   100    0025-9efb-effc  32768  259   49        1 0111100
GigabitEthernet2/0/3   100    0025-9efb-effc  32768  260   49        1 0111100
GigabitEthernet2/0/4   100    0025-9efb-effc  32768  261   49        1 0111100
GigabitEthernet2/0/0   100    0025-9efb-effc  32768  257   49        1 0111100

Note: The second digit 0 of PortState indicates the fast LACP mode on the peer end, and the second digit 1 of PortState indicates the slow LACP mode on the peer end.
Suggestions
Devices can communicate with each other when different devices and different versions use different LACP modes, without affecting services. Generally, devices at both ends should use the same configuration. If devices at both ends use differnet configurations, services may be not fast switched when one Eth-Trunk is Down and the other Eth-Trunk is Up.

END