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Author Topic: 5520 - Replacing a 5520 in a stack  (Read 6059 times)

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Offline bbooth

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5520 - Replacing a 5520 in a stack
« on: September 05, 2013, 11:27:18 AM »
Hi,

I have a stack of switches (SW:6.0.4.020 / FW 6.0.0.6) and discovered that when I performed the command - "show stack auto-unit-replacement", I see that "ready for replacement" is showing NO on all of them.  I have about 10 stacks and this stack is the only one showing no. Why is this and how do I change it to yes?


5520A#show stack auto-unit-replacement
Auto Unit Replacement Auto-Restore:  Enabled
Auto Unit Replacement Auto-Save:  Enabled


UNIT #        LAST CONFIG-SAVE TIME-STAMP        READY FOR REPLACEMENT

Unit 1            159 days 10:21:58                       NO

Unit 2            172 days 07:10:02                       NO

Unit 3            000 days 00:00:00                       NO

Thanks!


« Last Edit: September 05, 2013, 02:13:05 PM by bbooth »


Offline Telair

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Re: 5520 - Replacing a 5520 in a stack
« Reply #1 on: September 06, 2013, 01:24:17 PM »
Humm...  I can only speculate, but are the stacking cables all connected and working?  Otherwise, does the logs show anything being wrong?

Offline telecom116

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Re: 5520 - Replacing a 5520 in a stack
« Reply #2 on: September 06, 2013, 02:58:19 PM »
Run the CLI command "show stack health" to see the up/down stacking cable status.  Also do a "show stack-info" and make sure both switches are running the same code version.

ERS 5520#show stack health

------------------------------------------------------------------------------
UNIT#            Switch Model       Cascade Up            Cascade Down
------------------------------------------------------------------------------
1 (Base)          5520-48T-PWR      OK                    OK
2                 5520-48T-PWR      OK                    OK

------------------------------------------------------------------------------
Switch Units Found = 2
Stack Health Check = OK - RESILIENT
Stack Diagnosis = Stack in full resilient mode.

ERS 5520#show stack-info
Unit# Switch Model     Pluggable Pluggable Pluggable Pluggable SW Version
                         Port      Port      Port      Port
----- ---------------- --------- --------- --------- --------- ----------
1     5520-48T-PWR     (45) None (46) None (47) None (48) SX   v6.2.6.035
2     5520-48T-PWR     (45) None (46) None (47) None (48) SX   v6.2.6.035

Offline bbooth

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Re: 5520 - Replacing a 5520 in a stack
« Reply #3 on: September 06, 2013, 03:31:06 PM »
I ran the "show stack-info" but the "show stack health" command doesn't exist????

02D-5520A#show stack-info
Unit# Switch Model     Pluggable Pluggable Pluggable Pluggable SW Version
                         Port      Port      Port      Port
----- ---------------- --------- --------- --------- --------- ----------
1     5520-48T-PWR     (45) None (46) None (47) None (48) SX   v6.0.4.020
2     5520-48T-PWR     (45) None (46) None (47) None (48) SX   v6.0.4.020
3     5520-48T-PWR     (45) None (46) None (47) None (48) None v6.0.4.020


Perhaps I need to do a reboot to see if this helps.

I can't find anything on stack health for this release.

Offline telecom116

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Re: 5520 - Replacing a 5520 in a stack
« Reply #4 on: September 09, 2013, 10:07:20 AM »
The software version you have is a very old version.  Also, it is the very first version in the 6.x code train and I believe it had lots of issues.  Strongly suggest you upgrade to at least 6.2.6 or 6.2.7, along with the associated diagnostic code (believe its now 6.0.0.18).  The good news is all upgrades from earlier than 6.0 have to go through the code version you are running, so you should be able to upgrade directly to the 6.2.7 code.

Offline bbooth

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Re: 5520 - Replacing a 5520 in a stack
« Reply #5 on: September 10, 2013, 12:59:37 PM »
Okay, I may try this in the near future.  Thanks all!

Offline Michael McNamara

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Re: 5520 - Replacing a 5520 in a stack
« Reply #6 on: September 22, 2013, 09:15:29 AM »
I believe you need more than 2 switches in a stack to support auto-replacement. It appears you also have a phantom switch in the stack that you might need to remove (re-number the stack to remove it permanently).
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Offline bbooth

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Re: 5520 - Replacing a 5520 in a stack
« Reply #7 on: September 23, 2013, 10:02:01 AM »
Thanks!  However, I do have 3 switches in the stack, not 2 (I did visually verify).  I am still thinking about re-booting to see what happens, but will have to schedule for after hours.  Any other thoughts?

Offline GCM

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Re: 5520 - Replacing a 5520 in a stack
« Reply #8 on: September 26, 2013, 03:01:11 PM »
BB - I have noticed the same thing - some of the switches in my stack of 4 switches show "No" and some "Yes" under "Ready for Replacement".  I think I understand very well how AUR and AAUR works, but can't haven't been able to completely wrap my head around why some would be No.  Saving the config either by "save config" or "copy config nvram" doesn't make a difference.  All switches are on the same Diagnostics and Image so it's not a case that the switches marked No are a different version.  The only thing I've found is that this occurs only when autosave is disabled.  With autosave enabled, all switches show Yes after the periodic save.

Offline bbooth

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Re: 5520 - Replacing a 5520 in a stack
« Reply #9 on: September 27, 2013, 08:53:11 AM »
GCM - Interesting, however I checked the autosave is it shows it being enabled - Auto Save: Enabled

Thx!