Forum Discussion

jimk1963

Virtuoso

Mar 13, 2020

RN528 Bond interface bond0 has slave interface eth0 offline

This keeps happening, started two weeks ago and happens 20 times per day: “Bond interface bond0 has slave interface eth0 offline.“ RN528 and RN214 are both bonded through switch XS716E using LACP, c...

StephenB

Guru - Experienced User

Mar 13, 2020

jimk1963 wrote:
This keeps happening, started two weeks ago and happens 20 times per day:
“Bond interface bond0 has slave interface eth0 offline.“

How to diagnose this???

Have you downloaded the log zip file, and looked in there? network_settings.log has the packet statistics - I'd expect to see errors in system.log and kernel.log when the problem occurs. Perhaps look at the network stats on the switch.

As a test you could try breaking the bond, and just using eth0. Then see if the interface works reliably that way.

FWIW, I'd be surprised if bonding gives you a performance boost when you are already running 10GBaseT. Are you using SSDs?

jimk1963 wrote:
Latest NAS firmware 6.10.2 on bot NAS machines.

Latest is actually 6.10.3, but I don't know of any bug fixes for bonding in that release. https://kb.netgear.com/000061727/ReadyNAS-OS-6-Software-Version-6-10-3

jimk1963
Virtuoso
Mar 13, 2020
Thanks, I looked at the “logs” tab (not a zip file though??), doesn’t say anything useful. I’m not sure where to fetch that zip file from. With dual ETH on both PC and NAS the speed is closer to 2 Gbps than 1 Gbps so there is some benefit. Also, as noted this has been Rick solid for a year now. Nothing has been physically moved, just OS upgrades as they come along. Sorry, yes Both NAS’s are on 6.10.3. I can tear down the bonding but it was some learning/work to get it configured and stable, hate to go through that again. Frustrating.
- StephenB
  Guru - Experienced User
  Mar 13, 2020
  jimk1963 wrote:
  I’m not sure where to fetch that zip file from.
  
  There's a download button on the right of the the logs tab. That will download a zip file that has a lot more information than you see on the log tab.
  
  jimk1963 wrote:
  With dual ETH on both PC and NAS the speed is closer to 2 Gbps than 1 Gbps so there is some benefit.
  
  Gigabytes per second? How are you measuring the speed?
  - jimk1963
    Virtuoso
    Mar 28, 2020
    Speeds quoted are gigabits/sec of course. Monitoring speeds with simple Windows File Explorer transfers.
    
    Offline issue has been resolved, turned out to be a serious Orbi 11ax bug that has just been patched. Devices have remained fully online for over a week now since the patch.
    
    Thanks for the assistance with log files too, good for future reference.