Finally I have a complete vision and I can drive the architecture in the best way.
Original Message:
Sent: Mar 16, 2023 05:02 PM
From: Ivan_B
Subject: HPE 5945 to Aruba 5412R DT-LACP
Oh, I see :) No, I am afraid you stuck with stacking modules there as 3810M uses backplane stacking. VSF that you can find on newer ArubaOS or ArubaOS-CX switches and IRF on Comware are known as frontplane stacking technologies where ordinary Ethernet ports are used as stacking cables. More on that comparison you can find here - https://higherlogicdownload.s3.amazonaws.com/HPE/MigratedAssets/Backplane%20Stacking%20and%20VSF%20Best%20Practices.pdf
Hope it helps!
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Ivan Bondar
Original Message:
Sent: Mar 16, 2023 02:50 PM
From: sguarnieri
Subject: HPE 5945 to Aruba 5412R DT-LACP
Ivan, thank you again for the clar reply.
For the second part, i didn't mentioned that the 4-switches are Aruba 3810M that usually are stacked with proprietary stack cables. These 4-3810M will be linked to the new 4-IRF 5945.
Regards,
Stefano
Original Message:
Sent: 3/16/2023 2:46:00 PM
From: Ivan_B
Subject: RE: HPE 5945 to Aruba 5412R DT-LACP
Comware-based 5945 has only two MLAG technologies - S-MLAG and DRNI, so the only feasible option will be 4-units IRF stack.
About links, here is what the 5945's guide says:
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Ivan Bondar
Original Message:
Sent: Mar 16, 2023 02:34 PM
From: sguarnieri
Subject: HPE 5945 to Aruba 5412R DT-LACP
Hi Ivan,
Thank you for the reply and explaination.
Is there something like a DT-LACP that I can use on two IRFs in an environment like this?
If not, i'll go reporting this to the end customer and i can "force" him to move to a 4-irf configuration.
A little add to my request: is it possibile to create a 4-switch stack using fiber instead stack cables? Stack cables are a little short for us. This stack will be linked to the IRF.
Regards,
Stefano
Original Message:
Sent: 3/16/2023 2:27:00 PM
From: Ivan_B
Subject: RE: HPE 5945 to Aruba 5412R DT-LACP
Hi,
Both S-MLAG and DRNI have explicitly stated restriction (it's in the Layer 2 Configuration Reference Guide for the platform) - do not use them on IRF fabric.
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Ivan Bondar
Original Message:
Sent: Mar 16, 2023 08:19 AM
From: sguarnieri
Subject: HPE 5945 to Aruba 5412R DT-LACP
Hi all,
I have to configure this architecture for the end customer, where two 5412R NOT in VSF must face two couples of 5945. I know that configuring configuring one IRF with 4x 5945 would be more smart than having two IRFs with a DT-LACP but the end customer WANTS to have two separate instances, so...
Knowing DT-LACP on 5412R i had no problem configuring it but this is the first time i try to use S-MLAG on 5945 and i saw that even configuring everythig I lost some ping packets, telent refusing access and so on.
So I assume that maybe S-MLAG is not the best way or I've done something wrong.
Here is a brief pic of my scenario:
This is the configuration I used for 5945-to-5412R port (hpe-side):