topic RE: BR-VDX6740 - vlan: traffic between access and trunk ports. in Data Center (SLX)

BR-VDX6740 - vlan: traffic between access and trunk ports.

Pawel_Eljasz — Wed, 07 Nov 2018 23:13:00 GMT

hi guys,

with a client vlan "unaware" and port channel as this one:

Interface name : Port-channel 25
Switchport mode : trunk
Fcoeport enabled : no
Ingress filter : enable
Acceptable frame types : vlan-tagged only
Native Vlan : 4
Active Vlans : 2,4,1310
Inactive Vlans : -
MAC learn disable Vlans : -

and another port channel like:

Interface name : Port-channel 29
Switchport mode : access
Fcoeport enabled : no
Ingress filter : enable
Acceptable frame types : vlan-untagged only
Default Vlan : 4
Active Vlans : 4
Inactive Vlans : -
MAC learn disable Vlans : -

Is "Acceptable frame types" the reason why nodes cannot talk to each other?
How to rectify this problem?

many thanks, L.

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Sargis_Minasyan — Wed, 07 Nov 2018 23:25:00 GMT

Hi Pawel,

If the host on Po25 is sending packets untagged then I believe the expected behaviour is to drop the packets. You could try making native VLAN untagged on Po25.

Many thanks,
Sargis

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Pawel_Eljasz — Wed, 07 Nov 2018 23:49:00 GMT

Yes,
no switchport trunk tag native-vlan - I though should do (and it seems it does) but weird bit is that this does not change the output of: sh int switch - "Acceptable frame types : vlan-tagged only" remains but!! nodes can ping between.
Weird, no? (I have not tested trunks yet)

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Ronald_Dvorak — Thu, 08 Nov 2018 00:06:00 GMT

https://gtacknowledge.extremenetworks.com/articles/Q_A/How-can-I-change-global-native-VLAN-using-NOS...

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Sargis_Minasyan — Thu, 08 Nov 2018 00:18:00 GMT

Yes, that's the correct command. It maybe just show output issue, since the packets pass correctly

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Pawel_Eljasz — Thu, 08 Nov 2018 20:00:00 GMT

I'm still new - don't know if ExtremeNetworks runs something like bugzilla but this qualifies as a bug in my mind - "Acceptable frame types : vlan-tagged only"
I get something very wrong or am missing something here. Otherwise it's misleading big time - I would have not made this post if it had not been for that output info.

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Sargis_Minasyan — Thu, 08 Nov 2018 22:31:00 GMT

Hi Pawel,

Yes, there is a similar system. The issue seems cosmetic, but still a bug. Could you open a TAC case regarding that output?

RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

Pawel_Eljasz — Fri, 09 Nov 2018 01:32:00 GMT

Where do I find that system / how to open a TAC case?
There should be a simple bugzilla.
All I could find were support contract stuff and I do not think I have such thing.