An enterprise edge router receives a primary internal route for destination prefix via Internal EIGRP (Administrative Distance 90) and a primary default route for via external BGP (eBGP, Administrative Distance 20). A network administrator needs to configure floating static routes to serve as automatic failover backups for both destinations. Which TWO configuration statements correctly specify the Administrative Distance requirements for these static routes to operate strictly as floating backups? (Select TWO.)
- The floating static route backing up destination must be configured with an Administrative Distance value greater than 90.Cevap
- The floating static route backing up destination must be configured with an Administrative Distance value greater than 20.Cevap
- CThe floating static route backing up destination should use the default static Administrative Distance of 1 so it takes precedence during failure scenarios.
- DThe floating static route backing up destination should be configured with an Administrative Distance of 85 to prevent route flapping between routing processes.
Cevap
The floating static route for 10.50.0.0/16 must have an Administrative Distance greater than 90, and the floating static route for 0.0.0.0/0 must have an Administrative Distance greater than 20.
Cisco IOS routing table selection prioritizes routes with lower Administrative Distance (AD). For a static route to function as a 'floating' backup, its AD must be manually configured to a value higher than that of the active primary routing protocol (Internal EIGRP AD 90, eBGP AD 20). This ensures the static route remains untracked in the routing table until the primary route's AD source is lost.
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Floating Static Route Administrative Distance Requirements