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Backplane Stacking and VSF Best Practices for ArubaOS-Switch

Greetings!

 

We have developed a guide detailing best practices for deploying and maintaining backplane stacking and VSF on ArubaOS-Switch. The guide contains recommendations for deployment methods, maintenance, troubleshooting, and plenty of configuration examples. 

 

The attached guide covers the 2930F, 2930M, 3810M, and 5400R switch series.



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com
MVP Expert

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

The guide has been updated with corrections to the backplane stack and VSF member replacement procedures, clarification to guidelines for mixing switch models within a stack or VSF fabric, and various formatting fixes. 

 

Please feel free to respond to this thread with any issues, suggestions, or other feedback!



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com
MVP Expert

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

Hi Matthew,

 

Just two suggestion: first, on Timings appendix there is a wording that is not totally clear to me...take "Member addition" time on "2930F VSF (4 members)" paragraph: is it referring to VSF non sequenced update or to a VSF Member addition to an existing VSF fabric?

 

If the former is true maybe the "Member addition" wording should be changed into a more suitable "Member SW update".

 

Then a second thing: always on the same appendix...the statement "with brief traffic interruption on aggregated links when second member reboots" used on "5400R VSF (2 members)" paragraph is suggesting an global LAG traffic interruption (indeed using "...aggregated links..." doesn't help the reader to understand which physical links of the aggreagate will go down and which not) and not, more correctly, the fact that each LAG with links distributed to both VSF Member will just lose its physical links terminated into the VSF Member that is rebooting for update.

 

MVP Expert

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

On the first point: the timing entry for "Member addition" is for adding a new member to the fabric, from the point where the member is powered on (with cables connected to a VSF port on an existing member) to switch ports coming up after the switch has joined the fabric. 

 

As for the second point: the physical links to the rebooting chassis will go down; this can cause a brief interruption on a LAG as traffic flows utilizing the (now down) link to the remaining active link, with the duration of interruption varying by protocol (see the timings on page 2 of the document linked in this post for more details; the table will be integrated into a future revision of the best practices guide). 



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com
MG
New Contributor

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

Thanks very much for the guide. Deploying a 3810m stack at the moment and the info on OOBM is just in time.

Occasional Contributor I

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

Hey Matthew, thank you for the document! I have a qusetion that you can help me. If I have more than 1 switch in stack mode (2930M), is it possibile to sync the OSPF informations (protocol sync)?

MVP Expert

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

The stack behaves as a single logical switch, so protocol state (including OSPF) is automatically synced across the entire stack (no manual steps are required). 



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com
MVP Expert

Re: Backplane Stacking and VSF Best Practices for ArubaOS-Switch

The guide has been updated with a minor revision to add VSF OoBM-MAD configuration for the 5400R.



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com
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