An administrator must use Cisco FMC to install a backup route within the Cisco FTD to route traffic in case of a routing failure with primary route. Which action accomplish this task?
A.
Install the static backup route and modify the metric to be less than the primary route
B.
Use a default route in the FMC instead of having multiple routes contending for priority
C.
Configure EIGRP routing on the FMC to ensure that dynamic routes are always updated
D.
Create the backup route and use route tracking on both routes to a destination IP address in the network
A 'Routing Failure with the primary route' sounds like a route that is dynamically learned. Therefore a static backup route will work to take over if the primary route leaves the routing table.
D seems OK, but when I have done the IP SLA and route tracking in the past, The route tracking only lives on the primary route. But that's for dual-ISP conditions and that's not specified here. It _could_ be a default route up to the Corp HQ via 2 different leased circuits. in that case D makes sense.
I believe D is correct. The static route tracking feature provides a method for tracking the availability of a static route and installing a backup route if the primary route should fail. For example, you can define a default route to an ISP gateway and a backup default route to a secondary ISP in case the primary ISP becomes unavailable.
The Firepower Threat Defense device implements static route tracking by associating a static route with a monitoring target host on the destination network that the Firepower Threat Defense device monitors using ICMP echo requests. If an echo reply is not received within a specified time period, the host is considered down, and the associated route is removed from the routing table. An untracked backup route with a higher metric is used in place of the removed route.
https://www.cisco.com/c/en/us/td/docs/security/firepower/601/configuration/guide/fpmc-config-guide-v601/fpmc-config-guide-v60_chapter_01100100.html#ID-2105-00000029
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