[talk] LACP debug question

[Mark Saad]

Sujit
  I know that this is LACP debug . I am trying to understand the specific conditions that this LACP disconnect sequence is occurring.  It’s a odd thing, it’s happening during times of relatively low was tcp traffic . The router and is not highly loaded and I can’t find a reason why this is occurring . 


---
Mark Saad | nonesuch at longcount.org

On Jul 12, 2020, at 6:22 AM, Sujit K M <kmsujit at gmail.com> wrote:
> 
> 
> 
> 
>> On Sat, Jul 11, 2020, 10:03 PM Mark Saad <nonesuch at longcount.org> wrote:
>> All
>>   This is a repost from net . I am looking for someone who can help me better understand this LACP disconnect that I am seeing on 12-stable . The server is a router with Solarflare nics attached to a Pair of arista 7050’s . 
>> 
>> Can you help me understand what I am looking at here. I enabled the lacp debug until I finally saw the issue I noted before. Due to some log rotation part of the message is clipped.
>> Here is a part the full thing is on patebin https://pastebin.com/BGtbxcBf
>> 
>> 
>> 30 2020-07-09T15:47:04.145885+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: lacp_sm_rx_timer: CURRENT -> EXPIRED
>> 31 2020-07-09T15:47:04.145895+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: Interface stopped DISTRIBUTING, possible flapping
>> 32 2020-07-09T15:47:04.145895+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: collecting enabled
> 
> 
> https://en.m.wikipedia.org/wiki/Link_aggregation#:~:text=Within%20the%20IEEE%20specification%2C%20the,form%20a%20single%20logical%20channel.
> 
> The expired and stopped distribution might beat the purpose of LACP.
>> 
>> 33 2020-07-09T15:47:04.145896+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: disable distributing on aggregator [(8000,00-0F-53-69-7C-20,00F2,0000,0000),(8000,46-4C-A8-68-13-47,006A,0000,0000)], nports 2 -> 1
>> 34 2020-07-09T15:47:04.145911+00:00 ch1-c104-sdn02-mgmt kernel: sfxge1: lacp_select_tx_port: waiting transit
>> 35 2020-07-09T15:47:04.145912+00:00 ch1-c104-sdn02-mgmt kernel: marker transmit, port=6, sys=00:0f:53:69:7c:20, id=487
>> 36 2020-07-09T15:47:04.145912+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: sfxge1: lacp_select_tx_port: waiting transit
>> 37 2020-07-09T15:47:04.145913+00:00 ch1-c104-sdn02-mgmt kernel: marker transmit, port=5, sys=00:0f:53:69:7c:20, id=487
>> 38 2020-07-09T15:47:04.145914+00:00 ch1-c104-sdn02-mgmt kernel: marker response, port=6, sys=00:0f:53:69:7c:20, id=487
>> 39 2020-07-09T15:47:04.145914+00:00 ch1-c104-sdn02-mgmt kernel: [(8000,00-0F-53-69-7C-20,00F2,0000,0000),(8000,46-4C-A8-68-13-47,006A,0000,0000)], speed=10000000000, nports=1
>> 40 2020-07-09T15:47:04.145922+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: lacp_select_tx_port: waiting transit
>> 41 2020-07-09T15:47:04.145923+00:00 ch1-c104-sdn02-mgmt kernel: lacp_select_tx_port: waiting transit
>> 42 2020-07-09T15:47:04.145923+00:00 ch1-c104-sdn02-mgmt kernel: active aggregator not changed
>> 43 2020-07-09T15:47:04.145924+00:00 ch1-c104-sdn02-mgmt kernel: lacp_select_tx_port: waiting transit
>> 44 2020-07-09T15:47:04.145925+00:00 ch1-c104-sdn02-mgmt kernel: marker response, port=5, sys=00:0f:53:69:7c:20, id=487
>> 45 2020-07-09T15:47:04.145925+00:00 ch1-c104-sdn02-mgmt kernel: lacp_select_tx_port: waiting transit
>> 46 2020-07-09T15:47:04.145926+00:00 ch1-c104-sdn02-mgmt kernel: new [(8000,00-0F-53-69-7C-20,00F2,0000,0000),(8000,46-4C-A8-68-13-47,006A,0000,0000)]
>> 47 2020-07-09T15:47:04.145926+00:00 ch1-c104-sdn02-mgmt kernel: Set table 1 with 1 ports
>> 48 2020-07-09T15:47:04.145927+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: mux_state 4 -> 3
>> 49 2020-07-09T15:47:04.145928+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: collecting disabled
>> 50 2020-07-09T15:47:04.145930+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: mux_state 3 -> 2
>> 51 2020-07-09T15:47:04.145931+00:00 ch1-c104-sdn02-mgmt kernel: sfxge0: lacpdu transmit
>> 52 2020-07-09T15:47:04.145931+00:00 ch1-c104-sdn02-mgmt kernel: actor=(8000,00-0F-53-69-7C-20,00F2,8000,0005)
>> 53 2020-07-09T15:47:04.145932+00:00 ch1-c104-sdn02-mgmt kernel: actor.state=8d<ACTIVITY,AGGREGATION,SYNC,EXPIRED>
>> 54 2020-07-09T15:47:04.145932+00:00 ch1-c104-sdn02-mgmt kernel: partner=(8000,46-4C-A8-68-13-47,006A,8000,0006)
>> 55 2020-07-09T15:47:04.145933+00:00 ch1-c104-sdn02-mgmt kernel: partner.state=37<ACTIVITY,TIMEOUT,AGGREGATION,COLLECTING,DISTRIBUTING>
>> 56 2020-07-09T15:47:04.145935+00:00 ch1-c104-sdn02-mgmt kernel: maxdelay=0
>> 57 2020-07-09T15:47:04.145937+00:00 ch1-c104-sdn02-mgmt kernel: queue flush complete
>> ---
>> Mark Saad | nonesuch at longcount.org
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