Link failure count increased during Linux bonding

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TylerLLee wrote:

Additionally, I've observed that even when not bonded, unplugging and plugging the cable once results in two "Link down" logs appearing in the /var/log/messages, instead of the expected one.

Very, very unlikely a switch issue - much more an oddity of your U**x-like OS or it's drivers. Or have some unreliable cable or installation wiring?

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TylerLLee wrote:

 

When I bond the two interfaces of Broadcom P210TP in RedHat 9.3 or 9.4, and check the bonding status, the Link failure count is usually not 0. Most of the time both interfaces will show 1, sometimes only one interface will show 1.
The P210TP's firmware and OOB driver are already latest, and I have also updated the XS728T to 6.5.1.74.

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Are there really some wonky physical links that you operate fault-tolerance (active-backup)
or balance-alb? In my opinion, a waste of cabling and expensive connections and ports.

While talking:

• The later one (balance-alb) requires the two switch ports configured as a static LAG.
• There is no OOB on the XS728T or the Asus P210TP network adapters, very unclear what you talking of here.
• Consider to configure a static LAG or an LACP LAG on the Linux system -and- the connected  switch ports.
• I would not bother about a 1(and many low non-zero error counters in real world networking) ....

Regards,

-Kurt