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Enthusiast

Stacking SG550 switches

I am trying to connect two SG550 switches in a stack.
But everytime I connect the Stack ports i get this error:
 
20-Aug-2017 06:28:45 %CSCDLAG-I-UP: Stack port te1 operational status is UP
20-Aug-2017 06:28:45 %CSCDLAG-I-ACTIVE: Stack port te1 is active in stack LAG 1
20-Aug-2017 06:28:45 %CSCDLAG-I-UP: Stack port te2 operational status is UP
20-Aug-2017 06:28:45 %CSCDLAG-I-ACTIVE: Stack port te2 is active in stack LAG 1
20-Aug-2017 06:28:46 %Stack-E-STCK-DUPL-UNIT: Unit 2 was shutdown.
**************** THIS UNIT WILL BE SHUT DOWN *******************
20-Aug-2017 06:28:48 %CSCDLAG-W-DOWN: Stack port te2 operational status is Down
20-Aug-2017 06:28:48 %CSCDLAG-W-DOWN: Stack port te1 operational status is Down
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VIP Advisor

Re: Stacking SG550 switches

Personally not hands on it. But look at the document

Hybrid Stacking :

 

https://community.cisco.com/t5/small-business-support-documents/configure-stack-settings-on-an-sg350x-switch/ta-p/3171363

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7 REPLIES 7
Enthusiast

Re: Stacking SG550 switches

Does it stay down or comes back ?
Because as soon as you plug the stack cable, stack merge occurs
Enthusiast

Re: Stacking SG550 switches

It stays down and all the port lights and the system light on unit 2 starts lighting up constant.
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VIP Advisor

Re: Stacking SG550 switches

May be another good document to cross check again the configuration and physical connectivity.

 

https://sbkb.cisco.com/CiscoSB/GetArticle.aspx?docid=16803edff9ea4fbb91dff53ef1a7009d_Initial_Stack_Settings_Configuration_on_the_Sx500_Series_Man.xml&pid=2&converted=0

 

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Enthusiast

Re: Stacking SG550 switches

I also get this error on the other switch(the one that does not go down)
Stack-E-STCK-SHTDWN-SACK-MODE: Unit was shutdown due to stack mode incompatibility

One switch is a SG550X-48P and the other is a SG550XG-24T. They should be able to stack together right?
VIP Advisor

Re: Stacking SG550 switches

Personally not hands on it. But look at the document

Hybrid Stacking :

 

https://community.cisco.com/t5/small-business-support-documents/configure-stack-settings-on-an-sg350x-switch/ta-p/3171363

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Enthusiast

Re: Stacking SG550 switches

Hi

After af firmware upgrade I got this error:
%Stack-E-STCK-SHTDWN-SACK-MODE: Unit was shutdown due to stack mode incompatibility master mode is Native SG550XG / SX550XG slave mode is Native Sx550X

And when I change the stack mode to hybrid everything started working as expected.
VIP Advisor

Re: Stacking SG550 switches

That was good news, and good to know it worked.

 

Point noted, even though i do not hands on it.

 

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