How to shutdown only a switch in stack

[Eder Silva]

Hello Everyone,

I have a doubt. In my environement I have two Switch 3750-X in stack.

My question is:

How to shutdown remotely only a switch in stack?

Best Regards.

Eder.

[Collin Clark]

WARNING: I have never done this

You can access all or specific members by using the remote command {all | stack-member-number} privileged EXEC command. The stack member number range is 1 to 9.

You can access specific members by using the session stack-member-number privileged EXEC command. The member number is appended to the system prompt. For example, the prompt for member 2 is Switch-2#, and system prompt for the master is Switch#. Enter exit to return to the CLI session on the master. Only the show and debug commands are available on a specific member.

The way I read this is you can jump to the switch you need to and reload it.

[Somasundaram Jayaraman]

Hi,

From the master switch, issue the command

reload slot

switch no can be found by using "show switch detail" output

Hope this helps

Cheers

Somu

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[Leo Laohoo]

I honestly don't understand why you mean by "shutdown only a switch in a stack".  Can you elaborate further?

[Somasundaram Jayaraman · Accepted solution]

Hi Leo,

Consider a stack of 6 switches, Eder wants to reload only the 4th switch. This is his question? Am i right Eder?

if you issue a reload from the telnet session of the switch the entire stack will reload since the session you are seeing is the master's session.

If we want to reload only a specific switch in the stack we can use the command reload slot

Cheers

Somu

[Leo Laohoo]

 Consider a stack of 6 switches, Eder wants to reload only the 4th switch.

I don't know.  That's why I was asking Eder to clarify the statement "How to shutdown remotely only a switch in stack?".

[ranraju · Accepted solution]

Well here is some thing that i tried.

You can power down a switch in a stack and power on the same switch again remotely.

Command used was "power supply on/off" - in enable mode.

SWITCH#power supply ?

  <1-9>  Switch Number

SWITCH#power supply 2 ?

  off  Set the internal PS off

  on   Set the internal PS on

>>>> here i was able to power down the switch in the stack with the command "power supply 2 off"

>>>> And the switch came right back up when i entered "power supply 2 on"

Hope this what you were looking for.

Regards,

Ranganath

[Leo Laohoo]

Nice find Ranganath (+5).  Didn't know about this command.

[Somasundaram Jayaraman]

Nice one Ranga.. Never thought of this command.

[ranraju]

Thanks Leolaohoo & Somu,

Honestly, even i wasnt aware of this, didn't find it to be documented anywhere.. i was just working in the lab trying find if we had this option of remotely handling the switch members this way..- but this shouldn't really be the recommended way of doing it.. even if its one of the options that we have to bring a switch down in the stack, but its best to use the stack cables to unstack this switch. .

Regards,

Ranganath.

(TAC)

[Leo Laohoo]

Honestly, even i wasnt aware of this, didn't find it to be documented anywhere..

This is one "undocumented feature" I'll happily accept anytime! 

[Reza Sharifi]

Wow, great discovery Ranganath!

Good job and thanks for sharing with us (+5)

Reza

[Reza Sharifi]

I just tried this on a single 3750. The command "power supply 1 off" did in fact turned off the switch, but after about 2 or 3 minutes the switch turned on by itself with no manual interference.  So, in a way this command is just like the reload command.  It does not turn off the switch permanently.

Reza

[Somasundaram Jayaraman]

Hi Reza,

Then i guess the only possibilty is to disable the stack port, provided the stack ring speed is full.

switch stack-member-number stack port port-number disable

To re-enable the port, enter the "switch stack-member-number stack port port-number enable" command

Cheers

Somu

[Reza Sharifi]

Hi Somu,

Sorry, I did not see you last post, because we are already on the second page.

Anyway, so the command "switch stack-member-number stack port port-number disable"

will disconnect the switch from the stack production but will not turn off the switch right?

Reza