diff --git a/includes/definitions/ios.yaml b/includes/definitions/ios.yaml
index 2d6076ebda..ee756182bf 100644
--- a/includes/definitions/ios.yaml
+++ b/includes/definitions/ios.yaml
@@ -11,6 +11,7 @@ icon: cisco
 bad_ifXEntry:
     - cisco1941
     - cisco886Va
+    - cisco2811
 poller_modules:
     cisco-ace-serverfarms: 1
     cisco-ace-loadbalancer: 1
diff --git a/includes/polling/ports.inc.php b/includes/polling/ports.inc.php
index bf5d963f2f..afbcad75fc 100644
--- a/includes/polling/ports.inc.php
+++ b/includes/polling/ports.inc.php
@@ -127,7 +127,7 @@ echo 'Caching Oids: ';
 if ($device['os'] === 'f5' && (version_compare($device['version'], '11.2.0', '>=') && version_compare($device['version'], '11.7', '<'))) {
     require_once 'ports/f5.inc.php';
 } else {
-    if (!in_array($device['hardware'], $config['os'][$device['os']]['bad_ifXEntry'])) {
+    if (!in_array(strtolower($device['hardware']), array_map('strtolower', $config['os'][$device['os']]['bad_ifXEntry']))) {
         $port_stats = snmpwalk_cache_oid($device, 'ifXEntry', $port_stats, 'IF-MIB');
     }
     $hc_test = array_slice($port_stats, 0, 1);