Can I add a switch to working stack of WS-C3750-48P without any traffic interruption ?

[Syed Aman Hussain]

WS-C3750-48P       12.2(25)SEB4            C3750-IPBASE-M

Hi,

All

Thanks in Advance

I need to add a third stackable WS-C3750-48P and i Already downgrade  the new switch to  existing ios on the new switch(12.2(25)SEB4 )

switch to an existing stack of 2 WS-C3750-48P ( 12.2(25)SEB4 ) and was wondering if the first 2 need to be powered down before I install the third?

and i already change the priority the existing master switch to priority 15

Do I need to configure the new switch with anything specifically? (aside from assigning ports, etc.)

I'm assuming since I'll have to move around the backend cable, there will be a traffic interruption?

do i need any other configuration to the new switch

now can i add the new switch to existing stackable switches , if i add the new switch then any changes will heppen

Regards

Syed,

[Leo Laohoo]

Yes.  It'll work.

You need to power down THE NEW stack member.  Once you cable up only ONE of the stack cable, you apply power to the new member.  Once this member has successfully joined the stack then you add the second stack cable.

[Syed Aman Hussain]

Thanks for your reply its very helpfull for me

but i need some more clarifications

i already downgrade the new switch image to old existing switch image , and i change the existing master switch priority to 15 ,

if  i plug the new switch in to an existing stackwise switches  , do i have to put the existing switch configuration to the new switch or i plug without any configuration ,

if i plug with out any configuration then what will happened

[Leo Laohoo]

New stack member must NOT have any configuration file or VLAN.DAT file.

[Syed Aman Hussain]

Thanks for your reply i really appriciated

the new switch which i have to stack is having the detail

Switch   Ports Model             SW Version             SW Image

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

*   1   52     WS-C3750-48P       12.2(25)SEB4           C3750-IPBASE-M

and the old two existing switches are having  detail

Switch   Ports Model             SW Version             SW Image          

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

     2   52     WS-C3750-48P       12.2(25)SEB4           C3750-IPBASE-M    

*  3   52     WS-C3750-48P       12.2(25)SEB4           C3750-IPBASE-M   

now i have to put the new switch to existing switches , and there is no configuration on new switch and there is no VLAN.DAT file also i check

the existing switches are connected like this

1 Switch : port 2 :  2switch Port 2

only one

then do i have to remove stack cable and arrange it like

1 Switch : port 2 : 2nd Switch port 1

2 Switch : port 2 : 3rd Switch port 1

3 Switch : port 2 : 1st Switch port 1

or do some other

[Syed Aman Hussain]

thanks for support i successfully deployed the new switch