From: Bastien Roucariès Date: Sun, 12 Apr 2020 23:50:35 +0000 (+0200) Subject: Document BPDU filter option X-Git-Tag: v5.7.0~28 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=420febf9611d5cb4061055913041be00859210da;p=thirdparty%2Fiproute2.git Document BPDU filter option Disabled state is also BPDU filter Signed-off-by: Stephen Hemminger --- diff --git a/man/man8/bridge.8 b/man/man8/bridge.8 index 584324b54..bd33635ad 100644 --- a/man/man8/bridge.8 +++ b/man/man8/bridge.8 @@ -293,32 +293,45 @@ droot port selectio algorithms. .TP .BI state " STATE " -the operation state of the port. This is primarily used by user space STP/RSTP +the operation state of the port. Except state 0 (disabled), +this is primarily used by user space STP/RSTP implementation. One may enter a lowercased port state name, or one of the numbers below. Negative inputs are ignored, and unrecognized names return an error. .B 0 -- port is DISABLED. Make this port completely inactive. +- port is in +.B DISABLED +state. Make this port completely inactive. This is also called +BPDU filter and could be used to disable STP on an untrusted port, like +a leaf virtual devices. .sp .B 1 -- STP LISTENING state. Only valid if STP is enabled on the bridge. In this +- STP +.B LISTENING +state. Only valid if STP is enabled on the bridge. In this state the port listens for STP BPDUs and drops all other traffic frames. .sp .B 2 -- STP LEARNING state. Only valid if STP is enabled on the bridge. In this +- STP +.B LEARNING +state. Only valid if STP is enabled on the bridge. In this state the port will accept traffic only for the purpose of updating MAC address tables. .sp .B 3 -- STP FORWARDING state. Port is fully active. +- STP +.B FORWARDING +state. Port is fully active. .sp .B 4 -- STP BLOCKING state. Only valid if STP is enabled on the bridge. This state +- STP +.B BLOCKING +state. Only valid if STP is enabled on the bridge. This state is used during the STP election process. In this state, port will only process STP BPDUs. .sp