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Author Topic: Base replacement without down-time  (Read 3865 times)

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Offline Pavel Stoyanov

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Base replacement without down-time
« on: January 30, 2014, 07:25:39 PM »
Hi all,
I've got 3x 5510-48T in stack mode but I would like to replace the current BASE with 5530.
Do you know by practice if such is possible without down-time of all NON-BASE switches?


Offline Paul L

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Re: Base replacement without down-time
« Reply #1 on: January 30, 2014, 08:49:58 PM »
Its possible, the other two switches will retain their config. You will need to make sure you are introducing a switch with the same FW and SW versions as the existing stack.  There has been enhancements to the AUR, DUA and AAUR features. you are going to make to make sure your existing stack and new switch are running 6.3.X.

with that said, you are going to run into issues because you are introducing a new base switch that has a different port allocation.  The ERS5530 will become the base but it will load with a default config.

http://downloads.avaya.com/css/P8/documents/100167095

this doc explains the AUR process.

ACSS- Avaya Enterprise Routing Switch  #8

Offline CptnBlues63

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Re: Base replacement without down-time
« Reply #2 on: February 03, 2014, 04:15:53 PM »
Be warned, AUR does not seem to be working in newer versions of the SW.  At least, I couldn't get it working in v6.2.7 or v6.3.3 even though the release notes on v6.3.3 said it was fixed.  As per the following thread:

https://forums.networkinfrastructure.info/nortel-ethernet-switching/new-ers-5000-software-v6-3-3/


If it were me, I'd replicate the config for the base unit you're replacing on the replacement before connecting it and bringing it up. 

A couple things to remember.  First, when you down the present base unit to replace it, the base role will go to another switch in the stack.  The base role will not go back to the new base unit until you reboot the stack.  Lastly, don't forget to do a backup of your config once you have it up, running and stable!

Offline Pavel Stoyanov

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Re: Base replacement without down-time
« Reply #3 on: March 17, 2014, 12:02:17 PM »
Guys,

I've 2x 5530 + 3x 5510 in a stack running on v6.3.3.
Unit 1 = 5530 (BASE unit set via rear button)
Unit 2 = 5530
Unit 3 = 5510
Unit 4 = 5510
Unit 5 = 5510

So, I had an issue with one of the FANs of the BASE unit - replaced with new one.
The stack switched the Unit#2 as a temporal BASE unit due to above FAN issue.
When issue was solved the Unit#2 remains as temporal BASE unit.
How to put back the real BASE unit without restarting whole STACK?
I'm unable to find any info how via CLI to configure the BASE unit on support.avaya.com.
Any help appreciated...

Offline CptnBlues63

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Re: Base replacement without down-time
« Reply #4 on: March 17, 2014, 01:37:16 PM »
Guys,

I've 2x 5530 + 3x 5510 in a stack running on v6.3.3.
Unit 1 = 5530 (BASE unit set via rear button)
Unit 2 = 5530
Unit 3 = 5510
Unit 4 = 5510
Unit 5 = 5510

So, I had an issue with one of the FANs of the BASE unit - replaced with new one.
The stack switched the Unit#2 as a temporal BASE unit due to above FAN issue.
When issue was solved the Unit#2 remains as temporal BASE unit.
How to put back the real BASE unit without restarting whole STACK?
I'm unable to find any info how via CLI to configure the BASE unit on support.avaya.com.
Any help appreciated...

From what I read in the documentation you can't change the base from the temporary back to unit #1 without resetting the stack.  I may be wrong, but all my research said you can't do it without the reset.  If you find out different, definitely let me know in this thread.