From: roucaries.bastien@gmail.com
To: netdev@vger.kernel.org
Cc: sergei.shtylyov@cogentembedded.com,
"Stephen Hemminger" <stephen@networkplumber.org>,
"Bastien Roucariès" <rouca@debian.org>
Subject: [PATCH 5/6] Document root_block option
Date: Mon, 13 Apr 2020 01:50:37 +0200 [thread overview]
Message-ID: <20200412235038.377692-6-rouca@debian.org> (raw)
In-Reply-To: <20200412235038.377692-1-rouca@debian.org>
From: Bastien Roucariès <rouca@debian.org>
Root_block is also called root port guard, document it.
Signed-off-by: Bastien Roucariès <rouca@debian.org>
---
man/man8/bridge.8 | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index 9bfd942f..ff6a5cc9 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -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
--
2.25.1
next prev parent reply other threads:[~2020-04-12 23:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-05 13:48 Improve documentation of bridge Bastien Roucariès
2020-04-05 13:48 ` [PATCH iproute2 1/6] Better documentation of mcast_to_unicast option Bastien Roucariès
2020-04-05 13:48 ` [PATCH iproute2 2/6] Improve hairpin mode description Bastien Roucariès
2020-04-05 13:48 ` [PATCH iproute2 3/6] Document BPDU filter option Bastien Roucariès
2020-04-05 13:48 ` [PATCH iproute2 4/6] Better documentation of BDPU guard Bastien Roucariès
2020-04-05 13:48 ` [PATCH iproute2 5/6] Document root_block option Bastien Roucariès
2020-04-06 9:54 ` Sergei Shtylyov
2020-04-05 13:48 ` [PATCH iproute2 6/6] State of bridge STP port are now case insensitive Bastien Roucariès
2020-04-12 23:50 ` [V2][PATH 0/6] iproute improve documentation of bridge roucaries.bastien
2020-04-12 23:50 ` [PATCH 1/6] Better documentation of mcast_to_unicast option roucaries.bastien
2020-04-20 16:43 ` Stephen Hemminger
2020-04-12 23:50 ` [PATCH 2/6] Improve hairpin mode description roucaries.bastien
2020-04-12 23:50 ` [PATCH 3/6] Document BPDU filter option roucaries.bastien
2020-04-12 23:50 ` [PATCH 4/6] Better documentation of BDPU guard roucaries.bastien
2020-04-13 9:28 ` Sergei Shtylyov
2020-04-12 23:50 ` roucaries.bastien [this message]
2020-04-12 23:50 ` [PATCH 6/6] State of bridge STP port are now case insensitive roucaries.bastien
2020-04-20 16:51 ` [V2][PATH 0/6] iproute improve documentation of bridge Stephen Hemminger
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