Why does FreeBSD 8.1 drop BPDU packets when stp is off?
FreeBSD A and FreeBSD D's stp on.
FreeBSD B and FreeBSD C's stp off.
FreeBSD A cannot receive the BPDU from FreeBSD D, because FreeBSD C and FreeBSD B cannot forward BPDU.
Why?
Code:
FreeBSD A----------------FreeBSD B
| |
| |
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FreeBSD C----------------FreeBSD D
FreeBSD A and FreeBSD D's stp on.
FreeBSD B and FreeBSD C's stp off.
FreeBSD A cannot receive the BPDU from FreeBSD D, because FreeBSD C and FreeBSD B cannot forward BPDU.
Why?