11-02-2010 08:23 AM - edited 03-06-2019 01:51 PM
I have seen lot of documentations as how to stack 2 3750s switches.
I am looking for a step-by-step instructions on how to stack 2 3750 switches.
Really, appreciate if someone who has done it before and have hands-on experience (in lab or production environement) can direct me.
Thanks,
NG
Solved! Go to Solution.
11-22-2010 11:11 AM
You will not see line (with priority) when doing "sh run". But some one has done it
manually. I think, you can do it either in config mode and by setting "SWITCH_PRIORITY" environment variable.
11-02-2010 11:47 AM
Hi Naveen,
Not sure if had a look at this document but take a look at this link and see if helps:
11-02-2010 09:00 PM
Read the documents posted above. If you are still confused, here's the quick-n-dirty way:
1. Power up the switch master (ONLY!);
2. Attach the stacking cable to the rest of the members;
3. Power up the members ONE-AT-A-TIME and based on the order of your choice.
Example, if switch 2 is the 2nd switch, then power this switch after the master has been powered up and stacking cable has been applied. This is followed by switch 3, switch 4, etc.
Rules-of-the-Thumb:
1. Ensure all switches are running the same IOS version, same Feature Set (example IP Base);
2. Once all switches are up, ensure you enable "switch n priority XX";
11-03-2010 01:02 PM
Thanks I was able to access the link.
I am not able to access the link.
11-03-2010 09:07 PM
11-04-2010 03:19 AM
I did this scenario one month ago.
1. upgrade the new switch's IOS to match the same as the actual one (let's call it Master)
2. I shut down Master,
3. connected the new switch through its Stack cable,
4. boot Master, wait a few minutes and boot the new switch.
At this point, most of the configuration is synchronized between the two switches (vlans, etherchannel port, STP...). I had to manually configure switch ports.
Regarding stack master election and switch priority, I didn't change anything. But you should check for your gear.
Hope it helped.
11-16-2010 02:16 PM
I am not sure if we need to boot the master?
I have these 3 switches stacked together, where SW01 is the Master.
SW01 : Stack 1 <--> Stack 2 : SW02
SW02 : Stack 1 <--> Stack 2 : SW05
SW05 : Stack 1 <--> Stack 2 : SW02
Now, I want to add SW06 to this stack
SW01 : Stack 1 <--> Stack 2 : SW02
SW02 : Stack 1 <--> Stack 2 : SW05
SW05 : Stack 1 <--> Stack 2 : SW06
SW06 : Stack 1 <--> Stack 2 : SW01
- Change the switch priority of SW06 to 1.
switch 6 provision ws-c3750g-48ps
switch 6 priority 1
- Make sure that you redo the connections, dis-connect and connect the stack cables
SW06 : Stack 1 <--> Stack 2 : SW01
SW06 : Stack 2 <--> Stack 1 : SW05
- Power on the newly added switch.
This I plan on doing in the production, so please let me know if I am missing any steps here or I am doing something wrong.
-NG
11-18-2010 04:18 PM
Anyone?
11-20-2010 03:40 PM
show switch detail
Current
Switch# Role Mac Address Priority State
--------------------------------------------------------
*1 Master 0014.f2bc.6b00 15 Ready
2 Member 0019.e888.2600 10 Ready
5 Member 0016.4773.3780 1 Ready
I added switch 5 to the stack. But, when I looked at the "show switch detail"
command I see that switch 1 and 2 have priority configured on it.
But, in the config I have not configured any "switch 1 priority 15" and
"switch 2 priority 10" commands on the switch.
Where is the switch picking the priority from?
11-20-2010 04:04 PM
The default priority for the switch is 1. So, some one has changed switch-1 (master) priority to 15 and switch-2 to 10
11-22-2010 11:11 AM
You will not see line (with priority) when doing "sh run". But some one has done it
manually. I think, you can do it either in config mode and by setting "SWITCH_PRIORITY" environment variable.
12-03-2010 10:49 AM
You can configure switch priority by issuing this command.
switch
A higher priority value for a stack member increases its likelihood to be elected stack master and to retain its stack member number. The priority value can be 1 to 15. The default priority value is 1.
Do "show switch detail" to find which switch you need to change the priority.
show switch detail
Current
Switch# Role Mac Address Priority State
--------------------------------------------------------
*1 Master 0014.f2bc.6b00 15 Ready
5 Member 0019.e888.2600 12 Ready
7 Member 0016.4773.3780 10 Ready
switch 5 priority 12
switch 7 priority 10
Remember, that you will not see the switch priority command in the running config. These are written to system environment variables which you can I think grab once you are in ROMMON mode.
07-15-2016 11:06 PM
http://www.ccnaccnplinux.com/2015/01/switch-stack-configuration.html
if You visit i am sure you will get useful information
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