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Cisco stackwise assistance

Hello,

We currently have 3 switches in a stack.

switch 1 provision ws-c3750g-48ts
switch 2 provision ws-c3750g-24ts
switch 3 provision ws-c3750g-48ts

3750G1#show switch detail
Switch/Stack Mac Address : 0011.9270.xx
                                           H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
1       Member 001e.491e.xx     1      0       Ready              
*2       Master 0011.9270.1xx     1      0       Ready              
3       Member 0017.9470.xx     3      0       Ready


         Stack Port Status             Neighbors    
Switch#  Port 1     Port 2           Port 1   Port 2
--------------------------------------------------------
  1        Ok         Ok                2        3
  2        Ok         Ok                3        1
  3        Ok         Ok                1        2

3750G#

Right now I have switch 4 configured as:

switch 4 provision ws-c3750g-24ts

Is that all that is needed and then just cable it in the same pattern?

Thank you.

2 ACCEPTED SOLUTIONS

Accepted Solutions
Highlighted
Beginner

Re: Cisco stackwise assistance

John

If you want to set the switches priority you can use the command: switch priority in global

While I've never done a hot swap of cables while the switches were live I believe you can do so. In the past I've always just powered them down to do so. I'm sure someone could provide better guidance on that than me.

Advisor

Re: Cisco stackwise assistance

From what I know, the cables can be swapped. If the whole stack isn't rebooted, then a reelection shouldn't occur as long as the master isn't rebooted. You can set your master by priority number like

switch 3 priority 15 (0 - 15 are valid)

Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
1       Member 0024.50da.ff00     1      0       Ready
*2       Master 0012.d975.6100     15     0       Ready
3       Member 0013.1922.b000     14     0       Ready
4       Member 0013.1922.ea00     13     0       Ready
5       Member 0015.f937.6780     12     0       Ready
6       Member 001c.577a.a700     1      0       Ready

My switch master is 2. The priority is 15. If my stack reboots, my switch 2 will always come back up as master. On a side note, I've always shut my switch down that I was connecting the new cable to, to be on the safe side. =)

HTH,

John

HTH, John *** Please rate all useful posts ***
4 REPLIES 4
Advisor

Re: Cisco stackwise assistance

Should be. Make sure the switch that you're adding has the same IOS on it. I would set a window and downtime to add the switch to the stack. It may start negotiating for a stack master and bring the switch stack down until that happens.

HTH,

John

HTH, John *** Please rate all useful posts ***

Re: Cisco stackwise assistance

Hi John,

Are the cables hot swappable?

And how can I set the priorites of the switches so that there is no election and that the configuration won't change?

Thanks again,

    John

Highlighted
Beginner

Re: Cisco stackwise assistance

John

If you want to set the switches priority you can use the command: switch priority in global

While I've never done a hot swap of cables while the switches were live I believe you can do so. In the past I've always just powered them down to do so. I'm sure someone could provide better guidance on that than me.

Advisor

Re: Cisco stackwise assistance

From what I know, the cables can be swapped. If the whole stack isn't rebooted, then a reelection shouldn't occur as long as the master isn't rebooted. You can set your master by priority number like

switch 3 priority 15 (0 - 15 are valid)

Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
1       Member 0024.50da.ff00     1      0       Ready
*2       Master 0012.d975.6100     15     0       Ready
3       Member 0013.1922.b000     14     0       Ready
4       Member 0013.1922.ea00     13     0       Ready
5       Member 0015.f937.6780     12     0       Ready
6       Member 001c.577a.a700     1      0       Ready

My switch master is 2. The priority is 15. If my stack reboots, my switch 2 will always come back up as master. On a side note, I've always shut my switch down that I was connecting the new cable to, to be on the safe side. =)

HTH,

John

HTH, John *** Please rate all useful posts ***
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