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Document root_block option 

Root_block is also called root port guard, document it.

Signed-off-by: Bastien Roucariès <rouca@debian.org>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
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Bastien Roucariès 2020-04-13 01:50:37 +02:00 committed by Stephen Hemminger
parent 19bbebc459
commit 498883a00f
1 changed files with 5 additions and 0 deletions
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man/man8/bridge.8
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@ -372,6 +372,11 @@ enabled on the bridge. By default the flag is off.
Controls whether a given port is allowed to become root port or not. Only used
when STP is enabled on the bridge. By default the flag is off.
This feature is also called root port guard.
If BPDU is received from a leaf (edge) port, it should not
be elected as root port. This could be used if using STP on a bridge and the downstream bridges are not fully
trusted; this prevents a hostile guest from rerouting traffic.
.TP
.BR "learning on " or " learning off "
Controls whether a given port will learn MAC addresses from received traffic or