Log spam: "TX Packet without VLAN Tag on DCB Link"

[danb35]

I recently "upgraded" from CORE 12.0-U8 to SCALE 22.02.3. It's largely gone well, the apps work very well, and Ingress with Traefik is something I've been wanting for several years. But since the upgrade, I'm getting this spam in my logs (and on the console--iX apparently still haven't learned that -WALL ought to be reserved for issues on the level of "your server is on fire") every five seconds:

Code:

Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:31 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: net_ratelimit: 7947 callbacks suppressed
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link
Sep  3 10:43:36 freenas2 kernel: cxgb4 0000:82:00.4 enp130s0f4: TX Packet without VLAN Tag on DCB Link

Full hardware specs are in my .sig, but it's a SuperMicro X9DRD-7LN4F-JBOD motherboard, 128 GB of RAM, 2x Xeon E5-2670 CPUs, and a Chelsio T420-CR NIC. That NIC has two ports; enp130s0f4 is the one that's currently in use. How can I suppress these messages?

 

[Samuel Tai]

DCB (data center bridging) is enabled by default on the Chelsios. See http://service.chelsio.com/beta/drivers/ChelsioUwire-3.3.0.0/Chelsio-UnifiedWire-Linux-UserGuide.pdf, section 4.1.

This message basically means your Scale server issued an untagged packet, where it was expecting a tagged packet. Did you enable LLDP? That's typically the sort of frequent untagged packets on a link. How is your upstream switch port configured?

 

[danb35]

How is your upstream switch port configured?

Code:

interface ethernet 1/3/5
 speed-duplex 10G-full

It shouldn't be assigned to any VLANs:

Code:

vlan 1 name DEFAULT-VLAN by port
 router-interface ve 1
!
vlan 5 name ceph by port
 tagged ethe 1/3/1 
 untagged ethe 1/2/7 to 1/2/10 
!
vlan 107 name idiot by port
 tagged ethe 1/1/41 ethe 1/3/1 

The switch is a Brocade ICX6610-48P with the latest firmware (SW: Version 08.0.30uT7f3)

Did you enable LLDP?

 

[Samuel Tai]

Unfortunately, I'm not savvy on the Brocades. (I've only ever dealt with Cisco Nexus and Catalyst switches.) You may need to experiment with combinations of LLDP on/off, flow control on/off, tagged native VLAN on/off to find a setting that won't trigger this message.