[Linux-PowerEdge] R740 with QLogic QL41162HMRJ on RHEL7

klaasdemter at gmail.com klaasdemter at gmail.com
Fri Jul 13 09:00:09 CDT 2018

I was engaged off list by a Dell employee, the DCB/LLDP issue seems to be than one thing.

This is so we have public record of the workaround:

press F10 at boot to go to lifecycle controller ==> "system setup"  ==> "devices settings"
Change DCB Settings of each network adapter to "Disabled" (Factory default "Dynamic").

The issue seems to be 2 parts:
* Dynamic mode is not properly working with rhel7.5, that causes the problem with DCB not activating properly
* setting it to CEE fixes the AckNo rising and DCB is activating but it still seems to create the spam messages with the cisco router


> -----Original Message-----
> From: Linux-PowerEdge [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Klaas Demter
> Sent: Montag, 9. Juli 2018 16:23
> To: linux-poweredge at dell.com
> Subject: [Linux-PowerEdge] R740 with QLogic QL41162HMRJ on RHEL7
> Hi,
> I'm experiencing  couple of issues with that NIC on my RHEL7 servers
> - Any rhel prior to rhel 7.5 does not support the nic out of the box (ie you can't network-install) even though it is certified for rhel 7.3+ - while this is an inconvenience for me I just think this should be made more clear to people
> - the RHEL 7.5 driver does not enable dsu to update the firmware of the network cards or inventory the firmware version (I opened a case with Dell but it seems to be stuck somewhere, I don't think this has reached the proper devs yet)
> and last but not least a problem with lldp which is my main reason for writing this e-mail:
> - there seems to be an issue with the RHEL 7.5 driver or with the network card, not sure yet) that creates spam in our cisco switch logs with messages like this
> %LLDP-FEX105-3-DETECT_MULTIPLE_PEERS: Multiple peers detected on Eth105/1/7
> from client side I can see that the AckNo of CEE DCBX TLV is increasing steadily:
> lldptool -t -n -i em2
> [...]
>          Control TLV:
>            SeqNo: 1, AckNo: 91685
>          Application TLV:
>            Enabled, Not Willing, No Error
>            Ethertype: 0x8906, Priority Map: 0x08
>          Priority Groups TLV:
>            Enabled, Not Willing, No Error
>            PGID Priorities:  0:[0,1,2,3,4,5,6,7]
>            PGID Percentages: 0:100% 1:0% 2:0% 3:0% 4:0% 5:0% 6:0% 7:0%
>            Number of TC's supported: 1
> [...]
> Has anyone experienced weird behaviour with lldp? Where would I report such an error - is that the Del, Red Hat or even Cisco?
> Greetings
> Klaas
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