alaStackMgrNeighborChangeTrap(loop)

[12111]

Hi,
I have monitored one stack of eight switches and am receiving these traps randomly.

alaStackMgrNeighborChangeTrap(loop)
ALCATEL-IND1-STACK-MANAGER-MIB::alaStackMgrNeighborChangeTrap, alaStackMgrStackStatus: loop, alaStackMgrSlotNINumber: 1, alaStackMgrTrapLinkNumber: linkA27

Could you please tell me which can cause these listings?

thanks

[devnull]

I would guess it indicates whether your stack has a loop (redundant stacking cable) or the loop is not given (on stacking-link is open)

Waht does a show stack topology on the stack show? re-seat the cable (probably the one in Port "A" on slot 1)

[12111]

Ok.

This is what shows:

show stack topology
Link A Link A Link B Link B
NI Role State Saved Link A Remote Remote Link B Remote Remote
Slot State NI Port State NI Port
----+-----------+--------+------+-------+-------+-------+-------+-------+-------
1 PRIMARY RUNNING 1 UP 2 StackB UP 8 StackA
2 SECONDARY RUNNING 2 UP 3 StackB UP 1 StackA
3 IDLE RUNNING 3 UP 4 StackB UP 2 StackA
4 IDLE RUNNING 4 UP 5 StackB UP 3 StackA
5 IDLE RUNNING 5 UP 6 StackB UP 4 StackA
6 IDLE RUNNING 6 UP 7 StackB UP 5 StackA
7 IDLE RUNNING 7 UP 8 StackB UP 6 StackA
8 IDLE RUNNING 8 UP 1 StackB UP 7 StackA

[devnull]

This is the way it should look like.

Do you get "noLoop" traps as well? In my case i have always seen noLoop followed by "loop" traps.

-> Open a SR if this persists.

[12111]

Since I've checked the cables, so far I have not received more traps.
I'll leave it in observation.

(maybe had a bad contact)

Thanks