0514-018 ha_mode Insufficient no of adapters.

Method error (/usr/lib/methods/chgsea): 0514-018 ha_mode. Insufficient no. of adapters.
When i did Load sharing SEA Fail over  i faced 0514-018 ha_mode. Insufficient no. of adapters. error.

Error:

bash-4.2# chdev -l ent24 -a ha_mode=sharing
 Method error (/usr/lib/methods/chgsea):
 0514-018 The values specified for the following attributes
 are not valid:
 ha_mode. Insufficient no. of adapters.

I have two VIO Servers with Load Sharing SEA.
SEA Adapter Details are :

bash-4.2# lsattr -El ent24

As Per Current SEA Configuration details
  Trunk Adapter 1: : ent21
  Real Adapter (Link Aggregation) : ent20
  Control Channel Adapter : ent23

Problem Identifications:

It is a Load sharing SEA i was missed one of the virtual VLAN Trun adapter.
That’s the reason SEA not working properly.

Solution for the Problem:

Find out the missing Virtual VLAN Trunk Adapter and Verify adapter details.
 Step 1: Find out the adapter details
 bash-4.2# i lsdev -slots | grep -w C14
 U9179.MMC.06577A6-V5-C14 Virtual I/O Slot ent39
 Step 3: Find out VLAN Details of the adapter
 bash-4.2# entstat -d ent39 | grep -i vlan
 VLAN Ids :
 Packets filtered(VlanId): 2739976
 Packets filtered(VlanId): 0
 Invalid VLAN ID Packets: 0
 Port VLAN ID: 501
 VLAN Tag IDs: 69

Step 4: Add missing Virtual VLAN Trunk Adapter to our existing SEA.

 bash-4.2# chdev -l ent24 -a virt_adapters=ent21,ent39
 ent24 changed

Step 5: Verify the SEA Configuration after adding missing adapter

bash-4.2# lsattr -El ent24

SEA Configuration Details

bash-4.2# entstat -d ent24 | grep -i vlan
VLAN Ids :
    Packets filtered(VlanId): 2739976
    Packets filtered(VlanId): 0
Invalid VLAN ID Packets: 0
Port VLAN ID:   500
VLAN Tag IDs:    68
Management VLAN: Disabled
Invalid VLAN ID Packets: 0
Port VLAN ID:   501
VLAN Tag IDs:    69
Management VLAN: Disabled
Invalid VLAN ID Packets: 0
Port VLAN ID:  701
VLAN Tag IDs:  None

Step 6: Complete the SEA Fail over testing

bash-4.2# entstat -d ent24 | grep -i active
  Priority: 2  Active: False
  Priority: 2  Active: False
bash-4.2# chdev -l ent24 -a ha_mode=sharing
ent24 changed
bash-4.2# entstat -d ent24 | grep -i active
  Priority: 2  Active: True
  Priority: 2  Active: False
bash-4.2# entstat -d ent24 | grep -i _SH
  State: BACKUP_SH

On VIO Server 1 SEA Fail over:

bash-4.2# entstat -d ent24 | grep -i _SH
  State: PRIMARY_SH
bash-4.2# entstat -d ent24 | grep -i active
  Priority: 1  Active: False
  Priority: 1  Active: True

SEA Configuration Details on VIO1:

bash-4.2# entstat -d ent24 | grep -i vlan
VLAN Ids :
    Packets filtered(VlanId): 5907364
    Packets filtered(VlanId): 0
Invalid VLAN ID Packets: 0
Port VLAN ID:   500
VLAN Tag IDs:    68
Management VLAN: Disabled
Invalid VLAN ID Packets: 0
Port VLAN ID:   501
VLAN Tag IDs:    69
Management VLAN: Disabled
Invalid VLAN ID Packets: 0
Port VLAN ID:  701
VLAN Tag IDs:  None

Result:

Load Sharing SEA Adapter Error 0514-018 ha_mode. Insufficient no. of adapters. error. issue has been successfully resolved.