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Auto Upgrade of Stack 3750 Switch

Hello Team,

I have a Cisco 3750 switch as core ( 48 Port)  , we purchased a new Cisco 3750 (24 Port) switch with stack cable. below  the information of both switch .

1) I would like to know whether the new switch once added to stack will upgrade automatically ( the version has a difference one is SE3 (Existing )  and other SE5 (New Switch to be added ).

2) both  are  auto upgrade , will this create issue to the production Switch , that  is will the production switch get upgraded ( Master)  or only the new switch will get upgraded as soon as I  connect it  , is there any problem in keeping both auto upgrade.

##### Existing Switch in production ( 48 port )#############

Core -SW_A #show boot            

BOOT path-list      : flash:c3750e-universalk9-mz.122-55.SE3/

c3750e-universalk9-mz.122-55.SE3.bin

Config file         : flash:/config.text

Private Config file : flash:/private-config.text

Enable Break        : no

Manual Boot         : no

Auto upgrade        : yes

##########New Switch to be added to Stack  ( 24 port ) ############

New  -SW_A #show boot

BOOT path-list      : flash:c3750e-universalk9-mz.122-55.SE5/

c3750e-universalk9-mz.122-55.SE5.bin

Config file         : flash:/config.text

Private Config file : flash:/private-config.text

Enable Break        : no

Manual Boot         : no

Auto upgrade        : yes

Everyone's tags (5)
6 REPLIES

Auto Upgrade of Stack 3750 Switch

Personally I have never used auto upgrade in a production environment, I have always upgraded the IOS on the new switch manually, adjusted the priority manually and then added to the stack.

Auto Upgrade of Stack 3750 Switch

Hi.

Another option is to add swithces to stack without auto upgrade and then copy ios from master's switch flash to other switches:

copy flash(SWn):ios.bin flash(SWn):

where SWn is the switch number of master and destination switch.

HTH

Regards

Carlo

Please rate all helpful posts

"The more you help the more you learn"

Please rate all helpful posts "The more you help the more you learn"
New Member

Auto Upgrade of Stack 3750 Switch

how do i upgrade the IOS which is in the Directory  , if i upgrade it directly put the IOS in the flash without directory

flash:c3750e-universalk9-mz.122-55.SE5/

c3750e-universalk9-mz.122-55.SE5.bin

Auto Upgrade of Stack 3750 Switch

copy flash1:c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin flash2:

than..

If master has the ios on flash:c3750e-universalk9-mz.122-55.SE5 directory and switch 2 has  the image on flash: root, you can differentiate the boot point by issuing:

boot system switch 2 flash:c3750e-universalk9-mz.122-55.SE5.bin

Otherwise you could create the same directory also on switch 2 flash

Switch#mkdir flash2:c3750e-universalk9-mz.122-55.SE5

In this case you can copy the image directly to the switch 2 previously created directory.

copy flash1:/c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin flash2:c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin

In this case the boot command would be only one:

boot system flash:/c3750e-universalk9-mz.122-55.SE5/c3750e-universalk9-mz.122-55.SE5.bin for all switches in the stack

HTH

Regards

Carlo

Please rate all helpful posts

"The more you help the more you learn"

Please rate all helpful posts "The more you help the more you learn"
New Member

Auto Upgrade of Stack 3750 Switch

Thank you for the reply , I have just seen the below in cisco site , they say that if IOS are same and major version is same then it will form the stack , below attached both switch sh platform stack manager all , both are 1.45 version , does that mean that the stack will join with out any issue , if you look the IOS is similar but with a difference in the last part that is  SE3 and SE5  (tail identifier) does that mean this IOS is different or its just the identifier.

Fixing Incompatible Cisco IOS Versions and Switch-Stack Protocol Versions

A new switch might not join a stack when Cisco IOS versions or stack  protocol versions differ. Review these points about Cisco IOS versions  and stack protocol versions:

1Switches with the same Cisco IOS version also have the same stack protocol version and are compatible in the same switch stack.

2Switches with the same Cisco IOS version as the stack master can join the stack.

3Switches with different Cisco IOS versions can have different stack protocol versions.

4Switches  with the same Cisco IOS version but different major version numbers are  incompatible and cannot function in the same switch stack.

===

Core-SW #sh platform stack manager all

Switch/Stack Mac Address : 44d3.ca58.5500

                                           H/W   Current

Switch#  Role   Mac Address     Priority Version  State

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

*1       Master 44d3.ca58.5500     1      1       Ready

         Stack Port Status             Neighbors

Switch#  Port 1     Port 2           Port 1   Port 2

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

  1       Down       Down             None     None

               Stack Discovery Protocol View

==============================================================

Switch   Active   Role    Current   Sequence   Dirty

Number                    State     Number     Bit

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

1        TRUE    Master   Ready       001       FALSE

                 Stack State Machine View

==============================================================

Switch   Master/   Mac Address          Version    Current

Number   Member                          (maj.min)  State

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

1        Master    44d3.ca58.5500          1.45        Ready

Last Conflict Parameters

Switch Master/ Cfgd Default Image H/W  # of    Mac Address

Number Member  Prio Config   Type Prio Members

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

            Stack Discovery Protocol Counters

        Messages Sent                  Messages Recvd

        UP       DOWN                  UP        DOWN

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

*1: 0000000000 0000000000          0000000000 0000000000

2: 0000000000 0000000000          0000000000 0000000000

3: 0000000000 0000000000          0000000000 0000000000

4: 0000000000 0000000000          0000000000 0000000000

5: 0000000000 0000000000          0000000000 0000000000

6: 0000000000 0000000000          0000000000 0000000000

7: 0000000000 0000000000          0000000000 0000000000

8: 0000000000 0000000000          0000000000 0000000000

9: 0000000000 0000000000          0000000000 0000000000

             Misc  Counters

   Counter                      Up          Down

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

Wrong Ver Number: Send:    0000000000    0000000000

Wrong Ver Number: Recv:    0000000000    0000000000

Missed Messages:           0000000000    0000000000

Orphaned Messages          0000000000    0000000000

Suppressed Messages        0000000000    0000000000

No Available Messages      0000000000    0000000000

Link Present               0000000000    0000000000

Link Not Present           0000000001    0000000001

Link RxReset               0000000010    0000000010

Link Sync Stuck Resets     0000000000    0000000000

Duplicates                 0000000000    0000000000

RAC Not OK Resets          0000000000

Switch# of last duplicate  0000000256

Sequence Number Failures   0000000000

RAC Not OK Resets          0000000000

Sync Not OK Resets         0000000000    0000000000

Switch# of last Failure:   256  Last Difference 0

Switch Number Conflicts    0

Stack Changes              0

Int Stack Link changes     0

Int Stack Link state       0x0

Reciprocal Efficiency Changes: Upgrade 0, Downgrade 0

             Resource Counters

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

Chunk Alloc's        0000000001

Chunk Free's         0000000001

Enqueue Failures:    0000000000

Null Queue Failures: 0000000000

Chunk Alloc Errors:  0000000000

           Stack State Machine Counters

   Messages Sent              Messages Recvd

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

*1: 0000000001                 0000000001

2: 0000000000                 0000000000

3: 0000000000                 0000000000

4: 0000000000                 0000000000

5: 0000000000                 0000000000

6: 0000000000                 0000000000

7: 0000000000                 0000000000

8: 0000000000                 0000000000

9: 0000000000                 0000000000

======New-Switch

Switch#sh platform stack manager all

Switch/Stack Mac Address : c08c.60b6.b080

                                           H/W   Current

Switch#  Role   Mac Address     Priority Version  State

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

*1       Master c08c.60b6.b080     1      1       Ready

         Stack Port Status             Neighbors

Switch#  Port 1     Port 2           Port 1   Port 2

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

  1       Down       Down             None     None

               Stack Discovery Protocol View

==============================================================

Switch   Active   Role    Current   Sequence   Dirty

Number                    State     Number     Bit

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

1        TRUE    Master   Ready       001       FALSE

                 Stack State Machine View

==============================================================

Switch   Master/   Mac Address          Version    Current

Number   Member                          (maj.min)  State

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

1        Master    c08c.60b6.b080          1.45        Ready

Last Conflict Parameters

Switch Master/ Cfgd Default Image H/W  # of    Mac Address

Number Member  Prio Config   Type Prio Members

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

            Stack Discovery Protocol Counters

        Messages Sent                  Messages Recvd

        UP       DOWN                  UP        DOWN

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

*1: 0000000000 0000000000          0000000000 0000000000

2: 0000000000 0000000000          0000000000 0000000000

3: 0000000000 0000000000          0000000000 0000000000

4: 0000000000 0000000000          0000000000 0000000000

5: 0000000000 0000000000          0000000000 0000000000

6: 0000000000 0000000000          0000000000 0000000000

7: 0000000000 0000000000          0000000000 0000000000

8: 0000000000 0000000000          0000000000 0000000000

9: 0000000000 0000000000          0000000000 0000000000

             Misc  Counters

   Counter                      Up          Down

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

Wrong Ver Number: Send:    0000000000    0000000000

Wrong Ver Number: Recv:    0000000000    0000000000

Missed Messages:           0000000000    0000000000

Orphaned Messages          0000000000    0000000000

Suppressed Messages        0000000000    0000000000

No Available Messages      0000000000    0000000000

Link Present               0000000000    0000000000

Link Not Present           0000000001    0000000001

Link RxReset               0000000010    0000000010

Link Sync Stuck Resets     0000000000    0000000000

Duplicates                 0000000000    0000000000

RAC Not OK Resets          0000000000

Switch# of last duplicate  0000000256

Sequence Number Failures   0000000000

RAC Not OK Resets          0000000000

Sync Not OK Resets         0000000000    0000000000

Switch# of last Failure:   256  Last Difference 0

Switch Number Conflicts    0

Stack Changes              0

Int Stack Link changes     0

Int Stack Link state       0x0

Reciprocal Efficiency Changes: Upgrade 0, Downgrade 0

             Resource Counters

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

Chunk Alloc's        0000000001

Chunk Free's         0000000001

Enqueue Failures:    0000000000

Null Queue Failures: 0000000000

Chunk Alloc Errors:  0000000000

           Stack State Machine Counters

   Messages Sent              Messages Recvd

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

*1: 0000000001                 0000000001

2: 0000000000                 0000000000

3: 0000000000                 0000000000

4: 0000000000                 0000000000

5: 0000000000                 0000000000

6: 0000000000                 0000000000

7: 0000000000                 0000000000

8: 0000000000                 0000000000

9: 0000000000                 0000000000

Auto Upgrade of Stack 3750 Switch

I would make sure the IOS is exactly the same on the new switch before adding it.

Stackable switches are very picky an the last thing you want is for the stack to reboot when adding the new switch!

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