Mixing Catalyst 3750 and 3750X switches in the same stack

Unanswered Question
Oct 21st, 2010
User Badges:

Hi,


I'm currently planning on deploying a switch stack that would consist of the following switches:


2 x Catalyst 3750 12 SFP port switches

2 x Catalyst 3750X 48 10/100/1000 port switches


Cisco do claim that the 3750X is backwards compatible with the older 3750 platform, however it would seem that they run different software trains and this raises a few concerns.


I would be very grateful if anybody else has had experience mixing switches in the same stack from the two different platforms and more importantly if they have had any issues doing so.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
Loading.
tprendergast Mon, 10/25/2010 - 23:26
User Badges:
  • Silver, 250 points or more

You will be fine. They are fully stack-compatible.


If you look closely, the 3750 and 3750x actually run the same train. They are both on 12.2SE.


The latest for both comes up in the IOS navigator and downloads as 12.2.55-SE (ED).


Enjoy!

vinupeter_19 Sun, 04/03/2011 - 06:27
User Badges:

Can I Mix a 3750-E Stack running c3750-advipservicesk9-mz.122-40.SE with a 3750-X running C3750E-UNIVERSALK9-M), Version 12.2(53)SE2  ?



Regards,



Vinu

hobbe Sun, 04/03/2011 - 06:58
User Badges:
  • Gold, 750 points or more

No

They are not compatible

you need to use the same software versions.


c3750-advipservicesk9-mz.122-40.SE

is not the same as

C3750E-UNIVERSALK9-M), Version 12.2(53)SE2



Good luck


HTH

Leo Laohoo Sun, 04/03/2011 - 15:43
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    The Hall of Fame designation is a lifetime achievement award based on significant overall achievements in the community. 

  • Cisco Designated VIP,

    2017 LAN, Wireless

The E and X are tricky because of the licensing.  On the proviso that your "X" and "E" have the same license feature you have two choices:


1.  You can either roll out the "universal" feature set  to both switches; or

2.  You can either roll out the "advanced IP services" feature set

vinupeter_19 Tue, 04/05/2011 - 23:48
User Badges:

There was a mistake in my post the older stack that i have is of 3750 switches not the E series..


Stack 1


WS-C3750-48TS  - c3750-advipservicesk9-mz.122-40.SE.bin

WS-C3750-24TS  - c3750-advipservicesk9-mz.122-40.SE.bin


New Switch


WS-C3750X-24T-S - c3750e-universalk9-mz.122-53.SE2.bin

As Universal IOS is not available for WS-C3750-48TS models, will it work if i downgrade the IOS of my existing stack to 'c3750-ipbasek9-mz.122-53.SE2.bin'

Do i have to change my new switch IOS also to 'c3750e-ipbasek9-mz.122-53.SE2.bin'  for proper operation ?

Is there any link that shows the compatablity matrix of these in Cisco ?

FlorianBerthelot Mon, 04/11/2011 - 01:52
User Badges:

Hi vinupeter,


If you found any doc on this i would really appreciate, It seems to work with IPbase on both switches (3750X and 3750) but a compatibility matrix dwould be helpful, let me know if you find something like this. I continue on my side my researches.



Resgards

regnoble21 Mon, 09/16/2013 - 11:52
User Badges:

as long as they in the same train you should have no issues. i just did this with 2 48port g and a 24port x series..


Switch Ports Model              SW Version            SW Image

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

*    1 52    WS-C3750G-48PS     15.0(1)SE2            C3750-IPSERVICESK9-M

     2 52    WS-C3750G-48PS     15.0(1)SE2            C3750-IPSERVICESK9-M

     3 30    WS-C3750X-24P      15.0(1)SE2            C3750E-UNIVERSALK9-M



Switch#  Role   Mac Address     Priority Version  State

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

*1       Master 15     0       Ready

2       Member 13     0       Ready

3       Member 11     1       Ready

Joseph W. Doherty Mon, 09/16/2013 - 18:03
User Badges:
  • Super Bronze, 10000 points or more

Disclaimer


The  Author of this posting offers the information contained within this  posting without consideration and with the reader's understanding that  there's no implied or expressed suitability or fitness for any purpose.  Information provided is for informational purposes only and should not  be construed as rendering professional advice of any kind. Usage of this  posting's information is solely at reader's own risk.


Liability Disclaimer


In  no event shall Author be liable for any damages whatsoever (including,  without limitation, damages for loss of use, data or profit) arising out  of the use or inability to use the posting's information even if Author  has been advised of the possibility of such damage.


Posting


I've worked with original and later series mixed switch stacks, but like to avoid making them whenever possible.  The original series forces the newer StackWisePlus ring to run in original StackWise mode.  IOS maintenance is a pain.


In your particular case, be aware the original 3750G-12S has special SDM templates unique to it.  If being used, you need to change the common SDM templates (losing one of the major features of the -12S).

katharsis.ru Fri, 01/31/2014 - 01:10
User Badges:

Hi all!

I have two switches 3750G-24 and 3750x-24 with IOS

c3750-ipservicesk9-tar.122-58.SE2 for 3750G and

c3750e-universalk9-tar.122-58.SE2 for 3750x with features like this:


Switch3750x#sh lic

Index 1 Feature: ipservices

Period left: 8 weeks 4 days

License Type: Evaluation

License State: Active, Not in Use, EULA not accepted

License Priority: None

License Count: Non-Counted


Index 2 Feature: ipbase

Period left: Life time

License Type: Permanent

License State: Active, In Use

License Priority: Medium

License Count: Non-Counted


Index 3 Feature: lanbase

Period left: 0 minute 0 second


Is it possible to stack these cats or i need the same feature sets?

Ankur Arora Fri, 01/31/2014 - 01:24
User Badges:
  • Silver, 250 points or more

Hi Vladimir,


Yes, you can stack both the switches. Ipservices and ipbase license switches can be stacked together. However the only concern in that you have an evaluation ipservices license on the 3750x. So after the evaluation period is expired, if you reload the switch you might loose the stack.

But if you keep on running the 3750xswitch without any reload after the license expiration period, there shouldn't be any issues.



Thanks

Ankur



"Please rate the post if found useful"

katharsis.ru Fri, 01/31/2014 - 03:33
User Badges:

Are you realy sure?

I don't want to loose my stack in any situation!

I have a limited time to connect new 3750x to current 3750G (master) in production and must to minimal risks.

If I load current 3750G config to 3750x with minor changes then is it show me that evaluation period has started or not?

If there is one chance to loose stack may be will better to downgrade 3750G ?

Ankur Arora Fri, 01/31/2014 - 07:22
User Badges:
  • Silver, 250 points or more

Yes Vladimir,

I'm sure you will be able to stack them.

This is the evaluation time period left,

Period left: 8 weeks 4 days

And you will be able to check that after stacking both the switches using the show license command.


The minimum requirement to build a mix stack, i.e a 3750x and any other 3750 is that they should have atleast ipbase license in it. And you already have ipbase in the 3750G, so if you downgrade it further you won't be able to stack them together.


So as i said earlier:


If you keep on running the 3750xswitch without any reload after the license expiration period, there shouldn't be any issues, and your stack will keep on running.




Thanks

Ankur


"Please rate the post if found useful"

ckozub015 Thu, 03/06/2014 - 10:52
User Badges:

I also have a mixed stack of 3750G's and a 3750X, but my question is more about upgrading them.  I want to use Prime Infrastructure to push images to my infrastructure, but I'm concerned how the stack will handle it.  Any thoughts?


     1 30    WS-C3750X-24P      12.2(55)SE3           C3750E-UNIVERSALK9-M

*    2 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

     3 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

     4 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

     5 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

     6 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

     7 28    WS-C3750G-24PS     12.2(55)SE3           C3750-IPBASEK9-M

Leo Laohoo Thu, 03/06/2014 - 13:39
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    The Hall of Fame designation is a lifetime achievement award based on significant overall achievements in the community. 

  • Cisco Designated VIP,

    2017 LAN, Wireless

When it comes to switch stacks, you can't beat CLI over GUI.


My recommendation is to do the upgrade using CLI.  CLI will give you more details what the switch is doing.

camplingm Tue, 03/25/2014 - 12:17
User Badges:

Dear CSC,

 

Please could you help, I have an existing switch stack with 2x Cisco 3750G-24PS-S switches. I am wanting to add a new Cisco 3750X-24 (WS-C3750X-24P-S)

 

The existing switches are running:

Switch   Ports  Model              SW Version              SW Image           
------   -----  -----              ----------              ----------         
     1   28     WS-C3750G-24PS     12.2(35)SE5             C3750-IPBASE-M     
*    2   28     WS-C3750G-24PS     12.2(35)SE5             C3750-IPBASE-M 

 

Please could you confirm I am purchasing the right switch to match the software and routing / switching capabilities?

 

Thanks MC

rodrigito Fri, 06/06/2014 - 09:21
User Badges:

Hello Everyone,

Is it possible to join this switch:

Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 30    WS-C3750X-24P      12.2(55)SE3           C3750E-UNIVERSALK9-M

 


with the following stack :

Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
     1 52    WS-C3750G-48PS     12.2(53)SE2           C3750-IPBASEK9-M
*    2 52    WS-C3750G-48PS     12.2(53)SE2           C3750-IPBASEK9-M
     3 28    WS-C3750G-24PS     12.2(53)SE2           C3750-IPBASEK9-M
     4 28    WS-C3750G-24PS     12.2(53)SE2           C3750-IPBASEK9-M
     5 28    WS-C3750G-24PS     12.2(53)SE2           C3750-IPBASEK9-M
     6 28    WS-C3750G-24PS     12.2(53)SE2           C3750-IPBASEK9-M

I copied  c3750-ipbasek9-mz.122-53.SE2.bin  to the 3750X but it failed to boot. Apparently this firmware does not support the hardware so I reverted back to c3750e-universalk9-mz.122-55.SE3.bin.

 

Joseph W. Doherty Fri, 06/06/2014 - 09:56
User Badges:
  • Super Bronze, 10000 points or more

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

How about the converse, i.e. upgrade the 3750G stack.  (Why not 55SE9 on all?)

Normally you (very much) want to avoid mixing IOS versions between stack members.  Whether different versions will interoperate depends on what version of stack support their IOS version has embedded.

rodrigito Fri, 06/06/2014 - 14:18
User Badges:

Joe, I appreciate your time and response.
We've decided to hold off on the upgrade. First, we're going to renew our lic agreement with Cisco then upgrade all switches to the latest IOS.

Cheers,
/R0d

Actions

This Discussion

Related Content