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Zorluk: KolayFloating Static Routes

A network router currently receives its primary path to network 10.0.0.0/24 via RIP, which has a default administrative distance of 120. A network engineer needs to configure a static route to network 10.0.0.0/24 via the next-hop address 192.168.1.2 to act as a floating backup, activating only if the primary RIP route fails. Which command correctly configures this floating static route?

  1. ip route 10.0.0.0 255.255.255.0 192.168.1.2 130Cevap
  2. B
    ip route 10.0.0.0 255.255.255.0 192.168.1.2
  3. C
    ip route 10.0.0.0 255.255.255.0 192.168.1.2 110
  4. D
    ip route 10.0.0.0 255.255.255.0 192.168.1.2 120

Cevap

ip route 10.0.0.0 255.255.255.0 192.168.1.2 130
The command 'ip route 10.0.0.0 255.255.255.0 192.168.1.2 130' assigns an administrative distance of 130 to the static route. Because 130 is greater than RIP's administrative distance of 120, Cisco IOS keeps the static route out of the routing table as long as the RIP route remains active. If the RIP route fails, the floating static route is inserted into the routing table as the backup path.

Adım Adım Çözüm

1
Identify the primary routing protocol and its administrative distance.
The primary route is learned via RIP, which has a default administrative distance of 120.
Floating static routes rely on administrative distance values to determine route priority.
2
Determine the required administrative distance for a floating static route.
The administrative distance of the floating static route must be configured strictly greater than 120 (e.g., 130).
Cisco IOS prefers routes with lower administrative distances. To remain inactive in the routing table as a backup until the primary path disappears, the backup static route's administrative distance must be higher than that of the primary route.
3
Select the Cisco IOS command line syntax matching the required administrative distance.
The command 'ip route 10.0.0.0 255.255.255.0 192.168.1.2 130' correctly specifies a distance of 130.
Specifying 130 trailing the next-hop address correctly sets the administrative distance higher than RIP (120).

Anahtar Kavram

A floating static route requires an administrative distance configured higher than that of the active primary dynamic routing protocol.
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Konular

Floating Static Routes

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