Stacked Switch having no slave only one memeber which is master. Is it Possible ?

[vaibhavSingh86650]

Hello Everyone !!

I discovered few stacked Switches in a network and We have master & slave for it. But for few I don't see any

Slave only one member which is marked as Master and it has no slave. So my query is Is this even possible having no slave for master ?

Or whatever I am discovering on network is not correct. this is mainly for Cisco Stacked switch.

Please clarify if anyone knows more about this having single member as master for Stacked Switch.

Thanks,

Vaibhav

[Seb Rupik · Accepted solution]

Hi there,

The switch which has won the stack mater election will be marked as Master when running the sh switch command. This is true even when you have a standalone switch.

It would be stranger if the single switch was marked slave/ member !

cheers,

Seb.

[vaibhavSingh86650]

Hi Seb,

I did not understand what exactly you meant Can you please explain in few more words. It would be really helpful.

[Seb Rupik]

Have a read of this document describing the election process:

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/ha_stack_manager/configuration_guide/b_hastck_3se_3850_cg/b_hastck_3se_3850_cg_chapter_010.html#con_1228109

...this whole process takes place even on a standalone switch. In the absence of competing switches in a stack, the standalone switch will always become master.

cheers,

Seb.

[vaibhavSingh86650]

Okay Got you Seb, But what could be the reason for absence of switch in Stacked Switch ?

[Seb Rupik]

Not sure I completely understand your question. Possible reason for a switch stack of one could be:

* A standalone switch

* A switch perceived to be in a stack but with faulty stacking cables, such that it can't detect other stack members.

[paul driver · Accepted solution]

Hello

FYI - When any stackable switch boots up it will go through an stack election process and within thiis period if it doesnt see any other switch in this election then itself will become a standalone switch and a master of itself.

[vaibhavSingh86650]

Hello Seb/Paul !!

I discovered few stacked Switches in a network and We have master & slave for it. But for few I don't see any

Slave only one member which is marked as Master and it has no slave. So my query is Is this even possible having no slave for master ?

Or whatever I am discovering on network is not correct. this is mainly for Cisco Stacked switch.
It should be like
Master: Hostname
Slave:Hostname-serial number


Please clarify if anyone knows more about this having single member as master for Stacked Switch.



Thanks,

Vaibhav

[Seb Rupik]

Hi Vaibhav,

As both @paul driver and I have pointed out, it is expected behaviour for a stackable switch to report itself as master even in the absence of other switches.

To better understand your scenarios it would be useful for you to share the output of sh switch and also a description of the stacking cable setup and adjacent stackable switches.

cheers,

Seb.