istack cannot set up on S6700 using service interfaces

Publication Date:  2013-04-01 Views:  794 Downloads:  0
Issue Description
Customer want to use service interfaces to establish istack on S67. After configured, they found that istack cannot set up and have below alarm:
Mar 29 2013 23:50:52-05:13 Quidway ECM/3/LOGICAL_STACK_PORT_ILLEGAL:OID 1.3.6.1.
4.1.2011.5.25.183.1.22.9 stack port XGigabitEthernet0/0/4 connects with XGigabitEthernet0/0/4, there are port member of the same logic stack port ID. 
Alarm Information
Mar 29 2013 23:50:52-05:13 Quidway ECM/3/LOGICAL_STACK_PORT_ILLEGAL:OID 1.3.6.1.
4.1.2011.5.25.183.1.22.9 stack port XGigabitEthernet0/0/4 connects with XGigabitEthernet0/0/4, there are port member of the same logic stack port ID. 
Handling Process
1.Checked the configuration procedures and it is ok. The version is V200R002C00, which can support istack using service interfaces.
2.According to the alarm, it shows that the logic stack port ID is collision
3.Checking the product manual.Customer use four cables to connect same port on both sides
In a stack, stack interface 1 of the local switch must be connected to stack interface 2 of the peer switch.
4.The stack cable should be cross. Let customer change the connection and istack works fine.
Root Cause
1.Configuration issue
2.Device issue
Suggestions
None

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