mirror of
https://github.com/logicog/RTLPlayground.git
synced 2026-09-02 15:02:51 +08:00
d00f
78b3971782
The tree structure already crossed the switch by regeneration, but the topology-change information did not: a received TC flag was ignored and a TCN only acknowledged, so bridges behind this one kept stale entries until normal aging. A TC flag in a received BPDU now flushes the other non-edge ports once and arms the transmit window our BPDUs already copy the flag from, refreshed to hello+1 seconds by every further flagged frame so it ends one hello after the neighbour stops, without shortening the longer window a local change arms. A TCN is acknowledged as before and then treated like a local change on that port.