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June 20th, 2024 13:16

Port-Cannel troubleshooting commands debug

I am looking for in-depth commands for troubleshooting Port-Cannel.  

The issue is that I have been tasked with making a L2 LAG to switches that are physically separated by 3,000 miles.  I fully understand this is unheard of but this is my task.

To add to the fun the two links are with different providers and have different latency. 

Surprise surprise I am unable to get both links in the LAG at the same time.  This is what I expected but I want to know exactly why this is happening....PDU not arriving, packets out of order.......

What commands do you use to get the factual data to why?

< show lacp XXX counters > 

      Does no really help me that much

< show  lacp XX >

  Seems like this has a lot of good data but, its hard to read.  For example, when comparing it to a good Port-Channel the "State" has a "H" indicating "H - OUT_OF_SYNC" but that PC is working and has been working for years.

  and who is the "Actor" and who is the "Partner" ?  is there a white paper explaining the command < show  lacp XX >

   

< debug lacp pdu >

    I can see that pdu's are being sent.  I can also see the "State"  is 3f.  What are the states and their meanings?

< debug lacp events >

     Did not have time to let this run.  Is there a document that will guide me in the results once I can let this command run?

In the end I just need hard data pointing to exactly why this is not coming up.

Below is my config...it is the same on both sides:

interface Port-channel 1
 no ip address
 mtu 9216
 switchport
 no shutdown

interface TenGigabitEthernet 1/1
 no ip address
!
 port-channel-protocol LACP
  port-channel 1 mode active

interface TenGigabitEthernet 1/2
 no ip address
!
 port-channel-protocol LACP
  port-channel 1 mode active

  

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