On Fri, 18 Oct 2019, Rob Foehl wrote:
Juniper is now telling me that this is occuring by design, but can't point to
any documentation or standards which support that, nor explain why it
suddenly changed post-upgrade. I'm... not convinced.
Plot twist: the BPDUs in question turned out to be PVST+ BPDUs from an
unknown source, that were helpfully converted to MSTP BPDUs by some
on-by-default compatibility feature on an ancient pair of 6509s -- which
then started complaining loudly about and attempting to block ports based
on the nonsensical MSTP BPDUs which they'd made up.
Ugh. This is why we can't have nice things.
Anyway... This still leaves the questions of why this became apparent
only after an upgrade, why there are now multiple disagreements between
stated and observed behavior regarding regular BPDUs, and whether any of
this is correct. Case is still open, I'll follow up when I know more...
-Rob
_______________________________________________
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp
