topic VoSS version Mismatch the BCB & BEB and implications for Multicast in ExtremeSwitching (VSP/Fabric Engine)

VoSS version Mismatch the BCB & BEB and implications for Multicast

Larry_S — Wed, 16 Jun 2021 19:53:04 GMT

A VSP supported campus requires an Upgrade.
The Campus is highly utilising multicast traffic.
Looking for information on Multicast traffic traversing the Fabric when the BCB and BEB are running differing Voss version for a period of time.

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

Miguel-Angel_RO — Wed, 16 Jun 2021 20:05:35 GMT

No issue as far as I know but you should provide the SW version you run.

Maybe there are some known issues on those.

Mig

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

Larry_S — Wed, 16 Jun 2021 20:55:58 GMT

Miguel

Thank you form your reply.

Legacy VSP4.2.1.1 upgrading to Voss 7.1.9.x. Multiple upgrades

The intention is for the Core to Upgrade to Voss 7.1.9.x. immediately with the Edge being upgraded over a couple of hours. Multicast traffic can be lost for the respective edge VSP following the re-establishment of Multicast streams once Core are Upgrades and come back online.

Any thoughts or stability during the staggered Edge Upgrades.

Larry_S

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

Miguel-Angel_RO — Wed, 16 Jun 2021 21:12:14 GMT

Hi Larry,

The VSP4.2 is the first release shipped with the boxes…

Multicast i-sid are announced by ISIS, so no service interruption should be seen unless you reboot the switch hosting the multicast source or receiver.

If the multicast is routed, the service will be kept if the default gateway is reachable for the sender/receivers

When rebooting the switch hosting the sender, you’ll obviously impact the trafic for everybody.

When rebooting the switch hosting the sender, you’ll impact the trafic for the hosted receivers.

Mig

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

EXTR_Paul — Thu, 17 Jun 2021 05:23:08 GMT

The VSP4850s shipped with VOSS 3.0.

https://support.avaya.com/downloads/downloads-landing.action?product_id=P1440&product_name=virtual-services-platform-4000-series&release_number=3.0.x&contentType=Solutions

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

EXTR_Paul — Thu, 17 Jun 2021 05:30:57 GMT

Hi Larry.

I recently went through this with a few other customers.

I would not upgrade your cores all the way to v7.1.9, then try to upgrade the edge switches.

I am sure it will work, but there is no knowing how a vIST core running v7.1.9 is going to behave when all the edge switches are still running v4.X. I can assure you that no one has tested that.

Extreme engineering does regression testing, but not 7 years of regression testing.

I would do the following

Upgrade the core to v5.1.X, then all the edge switches to v5.1.X. Make sure everything is stable.

Then upgrade Core to v6.1.X. and Edge to v6.1.X. Make sure everything is stable.

Then do the final v7.1.X for the core and edge.

Re: VoSS version Mismatch the BCB & BEB and implications for Multicast

Larry_S — Thu, 01 Jul 2021 15:35:26 GMT

Paul / Miguel

Thank you for you assistance in the matter.

much appreciated.

Larry_S