topic vlan flooding VOSS 8.1.0.0 in ExtremeSwitching (VSP/Fabric Engine)

vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Fri, 29 Nov 2019 03:05:00 GMT

Hello,

Since I upgraded my fabric to VOSS 8.1.0.0, I experience vlan flooding. I receive all traffic of a vlan on each ports belonging to the vlan. It’s the same behavior for every VSP 7200 an 8400 in the fabric in 8.1.0.0.

Does anyone have the same issue ?

Thanks,

Re: vlan flooding VOSS 8.1.0.0

Jay2009 — Fri, 29 Nov 2019 06:06:21 GMT

What version were you on before? I believe this is even happening in 8.0 versions. My colleagues have been complaining about about it, but I haven't had a chance to look at it and open a TAC case. I'm on 8.0.7.0.

Re: vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Fri, 29 Nov 2019 06:44:44 GMT

I upgraded from 6.1.6 . Do you have some news from the tac ?

Re: vlan flooding VOSS 8.1.0.0

Jay2009 — Fri, 29 Nov 2019 07:34:55 GMT

I haven't opened a case yet. I'm aware of the issue because my IPS is screaming about it, and if we downgrade to Voss 7 it goes away. I just don't have time to deal with it right now. I will open a case tomorrow.

Re: vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Sun, 01 Dec 2019 02:39:15 GMT

I have open a case. I’ll let you know when I’ll have some news to share.

Re: vlan flooding VOSS 8.1.0.0

Roger_Lapuh — Mon, 02 Dec 2019 17:36:10 GMT

can you describe the setup you have where you see flooding?

Are you talking about a bridged or routed environment?
I assume you use SPB, what UNI did you configure where you see flooding?
How big is your fabric?
Is it happening on all ISIDs or only on a sub-set? Did the switch learn the destination MACs but still floods?

Let me know, thanks Roger

Re: vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Tue, 03 Dec 2019 03:03:41 GMT

Hi Roger,

Are you talking about a bridged or routed environment? Bridged L2VSN
I assume you use SPB, what UNI did you configure where you see flooding? It’s a C-Vlan UNI, ports in access mode
How big is your fabric? 5 clusters of VSP7200 and 1 cluster of VSP8400
Is it happening on all ISIDs or only on a sub-set? Did the switch learn the destination MACs but still floods? Yes, all ISIDs, traffic in a vlan is flooded to all ports belonging to the vlan of the switch (the same for each switch including VSP8400). The destination MAC is learned but there is still flooding. No changes have been made except an upgrade from 6.0.1.2 → 6.1.6.0 → 8.1.0.0

I opened a case on friday.

Thanks,

Re: vlan flooding VOSS 8.1.0.0

Roger_Lapuh — Tue, 03 Dec 2019 18:59:41 GMT

ok, thanks. We will look into it with support/engineering. Will provide an update for the rest of the readers once we know more.

Re: vlan flooding VOSS 8.1.0.0

Roger_Lapuh — Wed, 04 Dec 2019 18:07:05 GMT

quick update on this: The issue that was seen in this case was related to a InVSN forward to next hop filter that was pointing to another InVSN forward to next hop filter that was pointing back to the original device. Adjusting the filters resolved the flooding. So there is NO flooding issue with VSP release 8.0 nor 8.1.

Re: vlan flooding VOSS 8.1.0.0

Baitinger — Fri, 14 Feb 2020 16:28:05 GMT

Hi Roger,

we have a similiar flooding issue but just in one of our VLANs since the Update from 6.0.1.2 to 8.0.7.0.

Could you explain your solution.

Thanks

Re: vlan flooding VOSS 8.1.0.0

Roger_Lapuh — Fri, 14 Feb 2020 16:35:00 GMT

Are you using Forward to next hop filters on two switches?

Re: vlan flooding VOSS 8.1.0.0

Baitinger — Fri, 14 Feb 2020 18:04:53 GMT

Hi Roger,

could you explain what you mean with a next hop filter?

We dont use any Filters to our knowledge.

Thanks

Re: vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Fri, 14 Feb 2020 19:39:45 GMT

Hi all,

Quick update to let you know that I have still flooding in all vlan and that the case is still open. I don’t use any filters. It wasn’t the cause of the issue.

Re: vlan flooding VOSS 8.1.0.0

Baitinger — Fri, 14 Feb 2020 20:35:20 GMT

Thanks for the info

Re: vlan flooding VOSS 8.1.0.0

Marlon_Scheid — Sat, 15 Feb 2020 04:07:29 GMT

Hi,

this GTAC article was release today which descibes a vlan flooding condition:

https://extremeportal.force.com/ExtrArticleDetail?n=000045425

the bug fix is planned for VOSS 8.0.8. Does this sound about your issue?

regards

Marlon

Re: vlan flooding VOSS 8.1.0.0

Stephane_Lemair — Fri, 28 Feb 2020 05:49:23 GMT

Hello,

Unfortunately it doesn’t...