Cisco Dual WAN
Cisco IOS used: c181x-adventerprisek9-mz.124-24.T
! Identify the SLA.
ip sla 10
! Set up the IP address to ping, in this case yahoo.com ip.
icmp-echo 69.147.114.224
! Set how long in milliseconds to wait for a reply.
timeout 1000
! Repeat Rate.
frequency 3
! Start SLA 10 from now to forever.
ip sla schedule 10 life forever start-time now
! Setup track 10 to sla 10 for reachabilty.
track 10 ip sla 10 reachability
! Setup route for testing reach ability to the internet.
ip route 69.147.114.224 255.255.255.255 10.0.0.1
! Setup primary link with track 10 parameter.
ip route 0.0.0.0 0.0.0.0 10.0.0.1 track 10
! Setup fail-over link with higher metric.
ip route 0.0.0.0 0.0.0.0 192.168.0.1 20
Depending on your configuration, you will need to setup NAT on both interfaces.
* your_first_test_ip = the ip you will use to test your primary connection.
* your _second_test_ip = the ip you will use to test your secondary connection.
* your_primary_firsthop_ip = the first outside hop of your primary connection. Default route for primary connection.
* your_secondary_firsthop_ip = the first outside hop of your secondary connection. Default route for secondary connection.
* primary_interface = the interface name of your primary Internet connection.
* secondary_interface = the interface name of your secondary Internet connection.
* internal_ip_range = ip range of your internal devices.
IP sla monitor 1
type echo protocol ipIcmpEcho xxx.xxx.176.61 source-ipaddr xxx.xxx.176.18
timeout 2000
threshold 2000
frequency 3
IP sla monitor schedule 1 life forever start-time now
IP sla monitor 2
type echo protocol ipIcmpEcho xxx.xxx.176.57 source-ipaddr xxx.xxx.176.30
timeout 2000
threshold 2000
frequency 3
IP sla monitor schedule 2 life forever start-time now
track 100 rtr 1 reachability
track 200 rtr 2 reachability
IP route 0.0.0.0 0.0.0.0 xxx.xxx.176.17 track 100
IP route 0.0.0.0 0.0.0.0 xxx.xxx.176.30 track 200
IP route xxx.xxx.176.61 255.255.255.255 203.14.176.17
IP route xxx.xxx.176.57 255.255.255.255 203.14.176.30
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