[j-nsp] Can the QFX5100 log LACP state changes?

[Karl Gerhard]

Hello

thanks for the replies.
I received confimation that the messages appear just fine with 14.1X53-D40.8, so this seems to be just another Junos bug.

At least the following Junos versions are affected:
17.3R2
17.3R3-S1

Yes, this is the officially recommended version that's broken and no, there seems to be no mention of this in the release notes.

Regards
Karl






On 19.11.18 12:37, Karl Gerhard wrote:
> Hello
>
> I need to check interfaces for LACP flaps on a QFX5100.
> On an EX4550 and EX4300 it is very easy to do that. Every LACP state change would get logged and the syslog messages would look like this:
> Nov 16 14:44:15  ex4550-test /kernel: %KERN-5-KERN_LACP_INTF_STATE_CHANGE: lacp_update_state_userspace: cifd xe-0/0/16 - DETACHED state - will not carry traffic
> Nov 16 14:44:24  ex4550-test /kernel: %KERN-5-KERN_LACP_INTF_STATE_CHANGE: lacp_update_state_userspace: cifd xe-0/0/16 - ATTACHED state - acting as standby link
> Nov 16 14:44:24  ex4550-test /kernel: %KERN-5-KERN_LACP_INTF_STATE_CHANGE: lacp_update_state_userspace: cifd xe-0/0/16 - CD state - ready to carry traffic
>
> However, with QFX5100 I don't see those syslog entries any more. Best thing I can find when I disable an interface is this:
> Nov 19 11:55:48 qfx5100-test /kernel: %KERN-7: lag_set_dcd_link_state: ifd=ge-0/0/36, ifd flags=0xc002
> Nov 19 11:55:48 qfx5100-test /kernel: %KERN-7: lag_set_dcd_link_state: DCD Down received for ifd=ge-0/0/36
>
> Unfortunately "ifd" refers to the physical interface that is being shut down, therefore I think the message when LACP flaps without the physical interface going up/down (an example for this would be packet loss) will look different (or there is none at all).
>
> Does anyone know whether the QFX5100 logs LACP state changes at all or whether it is possible to configure that?
>
> Regards
> Karl
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