A network administrator intends to configure a backup floating static route on router R1 to reach destination network in the event that the primary route learned via OSPF fails. The administrator enters the following configuration command on R1:
`ip route 10.50.0.0 255.255.0.0 192.168.12.2 105`
What is the immediate impact of this configuration on router R1's routing table?
- The static route becomes the active route in the routing table because its administrative distance of 105 is lower than OSPF's default administrative distance of 110.Cevap
- BThe static route remains stored as an inactive backup route and will enter the active routing table only if the primary OSPF route fails.
- CThe static route is installed alongside the OSPF route, causing R1 to perform equal-cost load balancing toward destination 10.50.0.0/16.
- DThe command is rejected by Cisco IOS because custom administrative distance values for IPv4 static routes cannot be lower than 110.
Cevap
The static route becomes the active route in the routing table because its administrative distance of 105 is lower than OSPF's default administrative distance of 110.
In Cisco IOS, administrative distance (AD) determines which routing source is preferred when multiple sources provide routes to the same network prefix. OSPF has a default AD of 110. Because the configured static route specifies an AD of 105, which is lower (more trusted) than 110, the static route immediately takes precedence and replaces the OSPF route in the active routing table.
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Anahtar Kavram
Floating Static Route Administrative Distance Selection