diff --git a/usr/local/bin/custom/poe.sh b/usr/local/bin/custom/poe.sh
index 79dcbb1..30f630a 100644
--- a/usr/local/bin/custom/poe.sh
+++ b/usr/local/bin/custom/poe.sh
@@ -1,9 +1,20 @@
 #!/bin/bash
+# ============================================================================
+# PoE Device Check Script
+# - prüft Erreichbarkeit von Geräten
+# - startet PoE-Port bei Ausfall neu
+# - loggt Ereignisse
+# - löscht alte Logfiles (>30 Tage)
+# ============================================================================
 
-LOGFILE="/var/log/rpi-$(date '+%Y%m%d%H%M%S').log"
+LOG_DIR="/var/log"
+LOGFILE="$LOG_DIR/rpi-$(date '+%Y%m%d%H%M%S').log"
 
-# Intervall aus DB (Sekunden) abrufen
-SLEEP=$(python3 - <<END
+# Alte Logfiles löschen (älter als 30 Tage)
+find "$LOG_DIR" -type f -name "rpi-*.log" -mtime +30 -delete
+
+# Intervall aus DB abrufen
+SLEEP=$(python3 - <<'END'
 import sqlite3
 conn = sqlite3.connect("/srv/poe_manager/sqlite.db")
 row = conn.execute("SELECT value FROM settings WHERE key='check_interval'").fetchone()
@@ -12,8 +23,7 @@ print(row[0] if row else 300)
 END
 )
 
-# Umrechnung falls nötig
-SLEEP=${SLEEP:-300}  # default 300 Sekunden
+SLEEP=${SLEEP:-300}
 
 function disable_poe() {
     local switch_ip=$1
@@ -23,7 +33,6 @@ function disable_poe() {
     expect <<EOF
 set timeout 5
 spawn ssh $username@$switch_ip
-
 expect {
     "assword:" { send "$password\r"; exp_continue }
     "Press any key" { send "\r"; exp_continue }
@@ -40,8 +49,7 @@ expect "(config)#"
 send "exit\r"
 expect "#"
 send "exit\r"
-expect ">"
-send "exit\r"
+expect ">"; send "exit\r"
 expect "Do you want to log out (y/n)?" { send "y\r" }
 expect eof
 EOF
@@ -55,7 +63,6 @@ function enable_poe() {
     expect <<EOF
 set timeout 5
 spawn ssh $username@$switch_ip
-
 expect {
     "assword:" { send "$password\r"; exp_continue }
     "Press any key" { send "\r"; exp_continue }
@@ -72,30 +79,31 @@ expect "(config)#"
 send "exit\r"
 expect "#"
 send "exit\r"
-expect ">"
-send "exit\r"
+expect ">"; send "exit\r"
 expect "Do you want to log out (y/n)?" { send "y\r" }
 expect eof
 EOF
 }
 
-echo "" > $LOGFILE
+echo "" > "$LOGFILE"
+
 while true; do
-    echo "--------------------------------------------------------------------" >> $LOGFILE
-    IP_FILE=$(python3 /srv/poe_manager/generate_ips.py)
-    while IFS=: read -r rpi_ip dev_name switch_ip switch_hostname switch_port switch_user switch_pass; do
-        ping -c 1 -W 2 "$rpi_ip" &> /dev/null
-        if [ $? -ne 0 ]; then
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist nicht erreichbar!" >> $LOGFILE
-            disable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname deaktiviert." >> $LOGFILE
-            sleep 2
-            enable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname aktiviert." >> $LOGFILE
+    echo "--------------------------------------------------------------------" >> "$LOGFILE"
+    python3 /srv/poe_manager/generate_ips.py | while IFS=: read -r rpi_ip dev_name switch_ip switch_hostname switch_port switch_user switch_pass; do
+        if ping -c 1 -W 2 "$rpi_ip" &> /dev/null; then
+            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist erreichbar!" >> "$LOGFILE"
         else
-            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist erreichbar!" >> $LOGFILE
+            echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name ist nicht erreichbar!" >> "$LOGFILE"
+
+            # Nur PoE neu starten, wenn Port vorhanden ist
+            if [ -n "$switch_port" ]; then
+                disable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
+                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname deaktiviert." >> "$LOGFILE"
+                sleep 2
+                enable_poe "$switch_ip" "$switch_port" "$switch_user" "$switch_pass"
+                echo "$(date '+%Y-%m-%d %H:%M:%S') $dev_name PoE auf Port $switch_port am Switch $switch_hostname aktiviert." >> "$LOGFILE"
+            fi
         fi
-    done < "$IP_FILE"
-    rm -f "$IP_FILE"
-    sleep $SLEEP
+    done
+    sleep "$SLEEP"
 done