diff --git a/check_bonding.pl b/check_bonding.pl
index 613f098..6fbfd80 100644
--- a/check_bonding.pl
+++ b/check_bonding.pl
@@ -54,6 +54,7 @@ sub read_proc_bond {
 				$data->{'slaves'}->{$slave}->{'failure-count'} = $1 if /^Link Failure Count: (.+)$/;
 				$data->{'slaves'}->{$slave}->{'actor-churn'} = $1 if /^Actor Churn State: (.+)$/;
 				$data->{'slaves'}->{$slave}->{'partner-churn'} = $1 if /^Partner Churn State: (.+)$/;
+				$data->{'slaves'}->{$slave}->{'speed'} = $1 if /^Speed: (.+) Mbps$/;
 				}
 			}
 		}
@@ -71,6 +72,18 @@ sub check_bond {
 	my $config_str;
 	my $status = $data->{'status'};
 	if (defined $data->{'slaves'}) {
+		my $max_speed = 0;
+		foreach (keys %{$data->{'slaves'}}) {
+			$max_speed = $data->{'slaves'}->{$_}->{'speed'} if $data->{'slaves'}->{$_}->{'speed'} && $data->{'slaves'}->{$_}->{'speed'} > $max_speed;
+		}
+		if (defined $data->{'active'}) {
+			my $active_int = $data->{'active'};
+			$error = 1 if $data->{'slaves'}->{$active_int}->{'speed'} && $data->{'slaves'}->{$active_int}->{'speed'} ne $max_speed;
+		} else {
+			foreach (keys %{$data->{'slaves'}}) {
+				$error = 1 if $data->{'slaves'}->{$_}->{'speed'} && $data->{'slaves'}->{$_}->{'speed'} ne $max_speed;
+			}
+		}
 		foreach (keys %{$data->{'slaves'}}) {
 			$status = "warn" if $data->{'slaves'}->{$_}->{'actor-churn'}
 						&& $data->{'slaves'}->{$_}->{'actor-churn'} eq "churned";
@@ -86,8 +99,9 @@ sub check_bond {
 		$config_str = sprintf "$interface_name %s has no physical devices", $data->{'status'};
 		$error = 1;
 	}
-	foreach (keys %{$data->{'slaves'}}) {
+	foreach (sort(keys %{$data->{'slaves'}})) {
 		my $result = $data->{'slaves'}->{$_}->{'mii'};
+		$result .= ", ".$data->{'slaves'}->{$_}->{'speed'}."Mbps" if $data->{'slaves'}->{$_}->{'speed'};
 		$result = "churned" if $data->{'slaves'}->{$_}->{'actor-churn'}
 	       				&& $data->{'slaves'}->{$_}->{'actor-churn'} ne 'none';
 		$result = "churned" if $data->{'slaves'}->{$_}->{'partner-churn'}
diff --git a/monitoring-plugins-bonding.changes b/monitoring-plugins-bonding.changes
index 975e042..17471ce 100644
--- a/monitoring-plugins-bonding.changes
+++ b/monitoring-plugins-bonding.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Mon Dec 21 17:57:46 CET 2020 - ro@suse.de
+
+- also check the speed
+  - in active/failover warn if active interface does not
+    have the maximum speed
+  - in multi-active (rr,lacp) warn unless all interfaces
+    run in maximum speed
+
 -------------------------------------------------------------------
 Wed Oct  3 14:00:38 UTC 2018 - lars@linux-schulserver.de
 
diff --git a/monitoring-plugins-bonding.spec b/monitoring-plugins-bonding.spec
index b2230c8..d7b54a8 100644
--- a/monitoring-plugins-bonding.spec
+++ b/monitoring-plugins-bonding.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package monitoring-plugins-bonding
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -22,7 +22,7 @@ Release:        0
 Summary:        Nagios Network Bonding Check
 License:        GPL-2.0-or-later OR Artistic-1.0
 Group:          System/Monitoring
-Url:            http://www.monitoringexchange.org/inventory/Check-Plugins/Operating-Systems/Linux/Network-Bonding
+URL:            http://www.monitoringexchange.org/inventory/Check-Plugins/Operating-Systems/Linux/Network-Bonding
 Source0:        check_bonding.pl
 Source1:        usr.lib.nagios.plugins.check_bonding
 Source2:        nrpe-check_bonding