Failover iproute2 - Revision history

Snifer at 12:35, 21 July 2009

2009-07-21T12:35:13Z

Snifer at 12:32, 21 July 2009

2009-07-21T12:32:53Z

Snifer at 12:21, 21 July 2009

2009-07-21T12:21:27Z

Snifer: Created page with ''''iproute2 failover script''' #!/bin/sh INTERVAL=10 PACKETS=1 USINGWAN=0 WAN1=eth0 WAN2=eth1 #WAN1GW=`route -n | grep $WAN1 | grep '^0.0.0.0' | awk '{ print…'

2009-07-21T12:20:50Z

Created page with ''''iproute2 failover script''' <source lang=bash> #!/bin/sh INTERVAL=10 PACKETS=1 USINGWAN=0 WAN1=eth0 WAN2=eth1 #WAN1GW=`route -n | grep $WAN1 | grep '^0.0.0.0' | awk '{ print…'

New page

'''iproute2 failover script'''

<source lang=bash>
#!/bin/sh
INTERVAL=10
PACKETS=1
USINGWAN=0
WAN1=eth0
WAN2=eth1
#WAN1GW=`route -n | grep $WAN1 | grep '^0.0.0.0' | awk '{ print $2 }'`
#WAN2GW=`route -n | grep $WAN2 | grep '^0.0.0.0' | awk '{ print $2 }'`
WAN1GW=192.168.101.1
WAN2GW=192.168.101.2

# We'll run this in the intervals given above
while sleep $INTERVAL
do

# Try to figure out the current route
TARGET=`ip route | awk '/default via/ {print $3}'`

# Set the variable, so let the script now which connection is it dealing with
if [ "$WAN1GW" = "$TARGET" ]; then
USINGWAN=1;
else if [ "$WAN2GW" = "$TARGET" ]; then
USINGWAN=2;
fi;
fi
# We'll ping as many times the $PACKETS variable tells, and test if we have connection:
RET=`ping -c $PACKETS $TARGET 2>/dev/null | awk '/packets received/ {print $4}'`

# If we don't have connection, change the active WAN port (If there is any loss with multiple packets, it should change either)
if [ "$RET" -ne "$PACKETS" ]; then
if [ "$USINGWAN" = "1" ]; then
/jffs/etc/config/wan2.up
USINGWAN=2
echo "Changed active WAN port to 2!"
else
/jffs/etc/config/wan1.up
USINGWAN=1
echo "Changed active WAN port to 2!"
fi
fi
done;

</source>
[http://www.dd-wrt.com/wiki/index.php/Dual_WAN_with_failover Source]

← Older revision		Revision as of 12:32, 21 July 2009
Line 1:		Line 1:
	'''iproute2 failover script'''		'''iproute2 failover script'''

		+	----
		+
		+	Wan1 up
		+	<source lang=bash>
		+	#!/bin/sh
		+	# WAN1
		+	DEV=eth0
		+	GATEWAY=192.168.101.1
		+
		+	ip route delete default
		+	# ip route delete default
		+	ip route add default via $GATEWAY dev $DEV
		+	</source>
		+
		+	Wan2 up
		+	<source lang=bash>
		+	#!/bin/sh
		+	# WAN2
		+	DEV=eth1
		+	GATEWAY=192.168.102.1
		+
		+	ip route delete default
		+	# ip route delete default
		+	ip route add default via $GATEWAY dev $DEV
		+	</source>

	----		----

@@ Line 3: / Line 3: @@
 ----
-Wan1 up
+'''Wan1 up'''
 <source lang=bash>
 #!/bin/sh
@@ Line 15: / Line 15: @@
 </source>
-Wan2 up
+'''Wan2 up'''
 <source lang=bash>
 #!/bin/sh
@@ Line 29: / Line 29: @@
 ----
 <source lang=bash>
 #!/bin/sh
@@ Line 61: / Line 62: @@
          if [ "$RET" -ne "$PACKETS" ]; then
                  if [ "$USINGWAN" = "1" ]; then
-                         /jffs/etc/config/wan2.up
+                         /app/wan2.up
                          USINGWAN=2
                          echo "Changed active WAN port to 2!"
                  else
-                         /jffs/etc/config/wan1.up
+                         /app/wan1.up
                          USINGWAN=1
                          echo "Changed active WAN port to 2!"

@@ Line 1: / Line 1: @@
 '''iproute2 failover script'''
 <source lang=bash>
@@ Line 44: / Line 46: @@
          fi
 done;
 </source>
 [http://www.dd-wrt.com/wiki/index.php/Dual_WAN_with_failover Source]