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Zorluk: OrtaIPv4 Static Routing

An engineer is configuring router R1 to reach the internal network 10.50.0.0/1610.50.0.0/16 using a backup path via next-hop IPv4 address 192.168.12.2192.168.12.2. The primary route to 10.50.0.0/1610.50.0.0/16 is currently dynamically learned via EIGRP with an administrative distance of 9090. Which command must be configured on R1 so that the static route functions as a floating static route and only enters the routing table if the primary route fails?

  1. ip route 10.50.0.0 255.255.0.0 192.168.12.2 95Cevap
  2. B
    ip route 10.50.0.0 255.255.0.0 192.168.12.2 80
  3. C
    ip route 10.50.0.0 255.255.0.0 192.168.12.2 90
  4. D
    ip route 10.50.0.0 0.0.255.255 192.168.12.2 95

Cevap

ip route 10.50.0.0 255.255.0.0 192.168.12.2 95
The command 'ip route 10.50.0.0 255.255.0.0 192.168.12.2 95' correctly specifies the target network, subnet mask, next-hop IP address, and an administrative distance of 95. Because 95 is greater than the EIGRP administrative distance of 90, the router will keep this static route out of the routing table until the primary EIGRP route fails.

Adım Adım Çözüm

1
Identify the primary route protocol and its administrative distance.
The primary route is learned via EIGRP, which has an Administrative Distance (AD) of 90.
Floating static routes rely on a higher AD value than the primary path to remain dormant in the routing table.
2
Determine the required Administrative Distance for the floating static route.
The static route must have an AD greater than 90 (such as 95).
Cisco routers prefer routes with lower AD values; setting the AD higher ensures it is only installed when the primary route disappears.
3
Verify Cisco IOS static route CLI command syntax.
The format is 'ip route <destination-prefix> <subnet-mask> <next-hop-ip> [administrative-distance]'.
Using dotted-decimal subnet masks and placing the AD at the end of the command line complies with Cisco IOS syntax.

Anahtar Kavram

Floating Static Route Administrative Distance Configuration
Tahmini Süre:1m 0s
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Konular

IPv4 Static Routing

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