Hello,
@Doug Johnston wrote:
I'm guessing it is the way the QFXs hash BPDU out the AE members.
Anyone run across this before, anyone know of a fix, is this an unsupported model in the Juniper mc-lag world???
Only LACP and uBFD is sent out of ALL LAG ports. Everything else is sent out via single LAG member interface only.
AFAIK, this is not specific to JNPR and other vendors follow this method too.
You don't want Your switch to do half a dozen or a dozen STP changes when it receives 6-12 identical BPDUs, each with TCN set. Since STP protocol itself does not have built-in mechanisms/is not intelligent enough to do it only once, other preventative measures need to be taken.
Locally-originated traffic is NOT hashed, a single LAG member interface is chosen instead.
Normally this is lowest numbered port.
Try to rebuild Your LAG such that lowest numbered port is active in A/P MCLAG, then re-test and report back.
HTH
Thx
Alex