4500 stack s/W compatibility

[janac]

Hi.

I have trouble adding new 4500 into already stacked 2 4500 switches.



Stack is: 2x 3Com SuperStack 3 Switch 4500 50-port

sw:3.01.00.s56p01 bootableROM:1.01 HW:00.00.00



New: 3Com Switch 4500 50-port

sw:3.03.00.s56 bootableROM:3.00 HW:00.00.00



is there compatibility issue or something else Im doing wrong but it doesnt work.

stack connection is: 1/0/50 into 2/0/49 (it works unit 1 & 2)



new connection is added 2/0/50 into 3/0/49 (unit 3 is not visible and reachable in stack), ports are fabric enabled.

when I connect unit 3 with access ports it works like standalone switch,which is OK but not in stack.



Thanks

[janac]

Thanks for the answer.

Sysname and password is the same.



but as i can see software version is not the same.

Is there any instructions for software upgrade or downgrade?

it is preferable to downgrade new software to old because 2 switches are running and it's better not to mess something with upgrade.



Is there some document of that what you said about software version incompatibility?

[Fred_Mancen_1]

It's more easy to downgrade the software of the new switch, no doubt...but at the other hand, it's recommended to use newer versions on these switches, but as a workaround I don't see any problem downgrading the software.

There is no incompatibility between the softwares. Equal system softwares is a mandatory requisite to enable a fabric switch stack. No matter what are the softwares versions, they always need to be exactly the same. It's recommended also to maintain the file system on the switches exactly the same. Passwords doesn't matter, only the sysname (hostname).

To download the software to the flash, you can use TFTP. Configure an IP address on the VLAN interface 1, in the same network of your notebook. Through CLI, in the user view, issue the commands:

Deleting the softwares (the 4500 does not have enough space to store more than one .app file):





<4500> delete /unreserved <filename.web>


<4500> delete /unreserved <filename.app>





Downloading the bootrom software to the switch flash:





<4500>tftp <notebook_ip_address> get <filename.btm>





Updating the bootrom:





<4500>boot bootrom <filename.btm>





Downloading the software to the switch flash:





<4500>tftp <notebook_ip_address> get <filename.app>





Turning the software as the main:





<4500>boot boot-loader <filename.app>





Downloading the web software





<4500>tftp 192.168.10.39 get <filename.web>





Turning the web software as the main:





<4500>boot web-package <filename.web> main





Perform a reboot:





<4500> reboot





The switch will came up with the softwares you downloaded.

[janac]

Hi.

I have trouble adding new 4500 into already stacked 2 4500 switches.



Stack is: 2x 3Com SuperStack 3 Switch 4500 50-port

sw:3.01.00.s56p01 bootableROM:1.01 HW:00.00.00



New: 3Com Switch 4500 50-port

sw:3.03.00.s56 bootableROM:3.00 HW:00.00.00



is there compatibility issue or something else Im doing wrong but it doesnt work.

stack connection is: 1/0/50 into 2/0/49 (it works unit 1 & 2)



new connection is added 2/0/50 into 3/0/49 (unit 3 is not visible and reachable in stack), ports are fabric enabled.

when I connect unit 3 with access ports it works like standalone switch,which is OK but not in stack.



Thanks