routeros-scripts/bridge-port-to-default

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#!rsc by RouterOS
# RouterOS script: bridge-port-to-default
2021-01-01 20:33:52 +00:00
# Copyright (c) 2013-2021 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
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#
# reset bridge ports to default bridge
2020-03-27 20:39:37 +00:00
# https://git.eworm.de/cgit/routeros-scripts/about/doc/bridge-port.md
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global: variable names are CamelCase ___ _ ___ __ / _ )(_)__ _ / _/__ _/ /_ / _ / / _ `/ / _/ _ `/ __/ /____/_/\_, / /_/ \_,_/\__/ _ __ /___/ _ __ | | / /___ __________ (_)___ ____ _/ / | | /| / / __ `/ ___/ __ \/ / __ \/ __ `/ / | |/ |/ / /_/ / / / / / / / / / / /_/ /_/ |__/|__/\__,_/_/ /_/ /_/_/_/ /_/\__, (_) /____/ RouterOS has some odd behavior when it comes to variable names. Let's have a look at the interfaces: [admin@MikroTik] > / interface print where name=en1 Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE ACTUAL-MTU L2MTU 0 RS en1 ether 1500 1598 That looks ok. Now we use a script: { :local interface "en1"; / interface print where name=$interface; } And the result... [admin@MikroTik] > { :local interface "en1"; {... / interface print where name=$interface; } Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE ACTUAL-MTU L2MTU 0 RS en1 ether 1500 1598 ... still looks ok. We make a little modification to the script: { :local name "en1"; / interface print where name=$name; } And the result: [admin@MikroTik] > { :local name "en1"; {... / interface print where name=$name; } Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE ACTUAL-MTU L2MTU 0 RS en1 ether 1500 1598 1 S en2 ether 1500 1598 2 S en3 ether 1500 1598 3 S en4 ether 1500 1598 4 S en5 ether 1500 1598 5 R br-local bridge 1500 1598 Ups! The filter has no effect! That happens whenever the variable name ($name) matches the property name (name=). And another modification: { :local type "en1"; / interface print where name=$type; } And the result: [admin@MikroTik] > { :local type "en1"; {... / interface print where name=$type; } Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE ACTUAL-MTU L2MTU Ups! Nothing? Even if the variable name ($type) matches whatever property name (type=) things go wrong. The answer from MikroTik support (in Ticket#2019010222000454): > This is how scripting works in RouterOS and we will not fix it. To get around this we use variable names in CamelCase. Let's hope Mikrotik never ever introduces property names in CamelCase... *fingers crossed*
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:global BridgePortTo;
:global IfThenElse;
:global LogPrintExit;
:global ParseKeyValueStore;
:foreach BridgePort in=[ / interface bridge port find where !(comment=[]) ] do={
:local BridgePortVal [ / interface bridge port get $BridgePort ];
:foreach Config,BridgeDefault in=[ $ParseKeyValueStore ($BridgePortVal->"comment") ] do={
:if ($Config = $BridgePortTo) do={
:local DHCPClient [ / ip dhcp-client find where interface=$BridgePortVal->"interface" comment="toggle with bridge port" ];
:if ($BridgeDefault = "dhcp-client") do={
:if ([ :len $DHCPClient ] != 1) do={
$LogPrintExit warning ([ $IfThenElse ([ :len $DHCPClient ] = 0) "Missing" "Duplicate" ] . \
" dhcp client configuration for interface " . $BridgePortVal->"interface" . "!") true;
}
:local DHCPClientDisabled [ / ip dhcp-client get $DHCPClient disabled ];
:if ($BridgePortVal->"disabled" = false || $DHCPClientDisabled = true) do={
$LogPrintExit info ("Disabling bridge port for interface " . $BridgePortVal->"interface" . ", enabling dhcp client.") false;
/ interface bridge port disable $BridgePort;
/ ip dhcp-client enable $DHCPClient;
}
} else={
:if ($BridgePortVal->"disabled" = true || $BridgeDefault != $BridgePortVal->"bridge") do={
$LogPrintExit info ("Enabling bridge port for interface " . $BridgePortVal->"interface" . ", changing to " . $BridgePortTo . \
" bridge " . $BridgeDefault . ", disabling dhcp client.") false;
:if ([ :len $DHCPClient ] = 1) do={
/ ip dhcp-client disable $DHCPClient;
:delay 200ms;
}
/ interface bridge port set disabled=no bridge=$BridgeDefault $BridgePort;
} else={
$LogPrintExit debug ("Interface " . $BridgePortVal->"interface" . " already connected to " . $BridgePortTo . \
" bridge " . $BridgeDefault . ".") false;
}
}
}
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}
}