Reliable Static Routing Backup using Object Tracking

Scenario:

You are looking at a small network with a HQ and Branch router. At the HQ there is a webserver located and many users from the branch office are accessing this webserver. Between HQ and Branch there are two links. A fast cheap FastEthernet connection and a slow and very expensive serial link. You want to make sure the serial link will only be used when the FastEthernet fails. You don't trust the layer 1 and 2 information of the interface so you want to make sure you use layer 3 information to check if the webserver is reachable.

Goal:

• All IPv4 addresses have been preconfigured for you.
• Configure router Branch with a static route to reach the webserver through the FastEthernet link.
• Configure router Branch with another static route to reach the webserver through the serial link. Make sure this static route is only used when the FastEthernet static route disapears.
• Configure IP SLA on router Branch to ping the IP address of the webserver. Once it starts it should never stop.
• If you don't receive a ping for 5 seconds from the webserver router Branch should remove the static route for the FastEthernet link from the routing table.
• If everything goes ok all traffic will now be sent through the serial link.

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

Video Solution:

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