3750x Add to Stack

Patrick McHenry · ‎12-21-2012

Hi,

I have a couple of questions about adding a switch to a stack.

We have a 3750x switch stack with 2 switches connected but, not stacking. When the stack was installed they ran out of time trying to get the switches to stack so, the bottom switch is connected via the stack cable to the top switch but is not stacked with the top switch. The bottom switch is just sitting underneath the top switch powered up and connected but not stacked and with no devices connected to it.

I went into the "unstacked" switch via the console and saw that the version was different from the top switch.

The top switch(being used in production) is version: c3750e-universalk9-mz.122-55.SE1.bin

The bottom switch(no devices connected ) is version: c3750e-universalk9-mz.122-55.SE3.bin

Output from the top switch(being used in production)

Switch-Stack#sh switch det
Switch/Stack Mac Address : 6400.f169.2700
                                           H/W   Current
Switch# Role   Mac Address     Priority Version State
----------------------------------------------------------
*1       Master 6400.f169.2700     1      1       Ready
2       Member 0000.0000.0000     0      1       Provisioned

         Stack Port Status             Neighbors
Switch# Port 1     Port 2           Port 1   Port 2
--------------------------------------------------------
1       Down       Down             None     None

I'm guessing that my versions have to match and that could be why they are not stacking. Is this correct?

Thank you, Pat.

Collin Clark · ‎12-21-2012

Major revisions must match. Here's a good link on stacking switches.

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_example09186a00807811ad.shtml

When you try stacking them again, copy the logs and we'll be able to provide additional help.

Patrick McHenry · ‎12-21-2012

I've read the doc but, when I issue the show platform switch manager all command and they both have the same Major release. Shouldn't they stack?

Thank you.

SW 1

Switch   Master/   Mac Address          Version    Current
Number   Member                          (maj.min) State
-----------------------------------------------------------
1        Master    6400.f169.2700          1.45        Ready

SW 2

Switch   Master/   Mac Address          Version    Current
Number   Member                          (maj.min) State
-----------------------------------------------------------
1        Master    649e.f305.3380          1.45        Ready

Reza Sharifi · ‎12-21-2012

Pat,

To avoid any issues, make sure they are both running the same version and revision. Also make you to have the same license level on both switches,

Stack Port Status Neighbors

Switch# Port 1 Port 2 Port 1 Port 2

--------------------------------------------------------

1 Down Down None None

This output indicated that the there is no stacking cable connected to the device. Once you connect the stacking cable, down should change to ok.

sh swi det

HTH

mahesh18 · ‎12-21-2012

Hi Patrick,

Make sure that stack cable is plugged in properly and all screws are tight.

If status shows Provisioned you need to check

Stack port

Stack Cable

Thanks

MAhesh

Patrick McHenry · ‎12-21-2012

It appears they are plugged in correctly. Port 1 on top switch goes t o Port 2 on bottom switch and Port 2 on top switch goes to Port 1 on bottom switch.

"If status shows Provisioned you need to check"

Are you saying that if the status shows provisioned, then I have to check to see if the cables are plugged in correctly?

Thank you, Pat

mahesh18 · ‎12-21-2012

Hi Pat,

"If status shows Provisioned you need to check"

Are you saying that if the status shows provisioned, then I have to check to see if the cables are plugged in correctly?

Yes to need to make sure stack cables screw are inserted properly.

If you find that stack cables screws are inserted properly then you can try to change the stack port

Thanks

Mahesh

Patrick McHenry · ‎12-21-2012

What does the shut under port mean?

sh stack-power

Power stack name: Powerstack-1

Stack mode: Power sharing strict

Stack topology: Standalone

Switch 1:

Power budget: 223

Low port priority value: 22

High port priority value: 13

Switch priority value: 4

Port 1 status: Shut

Port 2 status: Shut

Neighbor on port 1: 0000.0000.0000

Neighbor on port 2: 0000.0000.0000

Reza Sharifi · ‎12-21-2012

Pat,

"shut" in this case means that there in no stacking power cable connected between the switches. The new 3560x and 3750x switches are capable of staking power (maximum of 4 switches). This is in addition to the regular stacking cable for data connectivity. So, if you connect the power cables that comes with the switch, you will see that "shut" will change to "connected"

switch-1------powercable------switch-2

HTH

Reza

Patrick McHenry · ‎12-21-2012

Reza,

But they are connected and screwed in.

Thanks

Leo Laohoo · ‎12-21-2012

Hey Patrick,

Please avoid using 12.2(55)SE1 or 12.2(55)SE3.

I recommend you look into upgrading to 12.2(55)SE6. It's more stable and has alot of bug fixes than what you are using now.

Reza Sharifi · ‎12-21-2012

Ok,

how are the cables connected is it port 1 to 1 and 2 to 2?

Can you apply these command and test again?

Switch(config)# stack-power stack power1

Switch(config-stackpower)# mode redundant

Switch(config-stackpower)# exit

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.2_58_se/configuration/guide/swstkpwr.html

Reza

Patrick McHenry · ‎12-21-2012

Reza,

command isn't available

Switch-stack#stack-power ?

switch Switch commands

but this is,

Switch-stack#stack-power switch 1 port 1 ?

disable Disable power stack port

enable Enable power stack port

Reza Sharifi · ‎12-21-2012

Pat,

try typing the command and enter

stack-power stack power1

than

enter

If this does not work, can you post sh ver from both switches?

oh also sh lice det from both switch

Reza