stacking problem in X670-G2

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  • Updated 1 year ago
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Hi There

We have two X670G2-48x-4q and want to stack them to each other. we use V160 and easysetup according to following document. (EXOS version, License Level and Active Partition are same)

also connected ports according to following document:

we encountered some problems. after enable stacking switches (some time one of switches) crashes and goes reboot.

some of logs listed here:

unconfigure dispatch attach fail: bcm_attach client unit 9
Unable to set ECMP hash= 0 for slotNo 2 unit 9, â 0 rc -19
<Info:HAL.Card.Info> Slot-1: Slot-2 down, resetting all TCP connections to it
<Info:HAL.Card.Info> Slot-1: Module in Slot-2 is removed                
<Erro:HAL.Card.Error> Slot-1: initBCMChipTempSensors : Failed to initialize chip temperature sensors for slot Slot-2                                                           
<Erro:HAL.Card.Error> Slot-1: ERROR4: attaching driver to slotNo 2 unit 0 remote 9, rc=-19
<Erro:HAL.Card.Error> Slot-1: Unable to set L2/L3 Hash = 5 for slotNo 2 unit 9, rc -19

default EXOS version is: 15.6

we cleared NVRAM, upgraded to EXOS and but again not works (crash and reboot).

please tell us which EXOS is compatible with stacking and what we should do.

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omar khaled

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Posted 1 year ago

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Pala, Zdenek, Employee

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it seems you already tested recommended firmware. I suggest to open ticket with GTAC. They will investigate what is wrong, what is the root cause.

Can be faulty device, can be unsupported tranceiver/cable...

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omar khaled

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thanks for your answer.

after some tests i found this devices doesn't work properly. for example in none-stack with default configuration  broadcasting doesn't work.

i should ask in another post.
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Jason Parker, Employee

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Do all of the switches contain all the same licenses
Have you tried building a stack with just with the.same image installed ( no configuration at all)
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omar khaled

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Hi Jason, thanks for your answer.

All of switches contain same lenience: Advanced Edge

I installed EXOS with same image and form Bootrom.
(it installed on primary and secondary partition)

with any configuration again occurs some errors.
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Ram, Employee

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Could you please open a GTAC case? So we could analyze/troubleshoot further.
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Dear Omar,

is it right, that you use the on the X670-G2?
I think only the new 21.X or higher is supported on that one.

Best Regards
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Erik Auerswald, Embassador

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Hi Chacko,

EXOS 16.1 is currently recommended for the X670-G2 switches, but the new 21.x and 22.x versions can be used as well.

Please see