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Zorluk: OrtaFloating Static Routes

A network engineer is configuring a floating static route on a Cisco router to serve as a backup path for destination network 172.20.10.0/24 via next-hop IP 10.1.1.2. The primary route to this network is currently learned via eBGP, which has a default administrative distance of 20. The engineer needs to assign an administrative distance of 25 to the backup route so that it only enters the routing table if the primary route fails. What value should complete the configuration command?

Cevap:ip route 172.20.10.0 255.255.255.0 10.1.1.2 【25】

Cevap

25
In Cisco IOS, a floating static route is created by appending a numerical administrative distance at the end of the `ip route` command. Specifying 25 configures the static route with an administrative distance higher than eBGP (AD 20), ensuring it remains floating (inactive) until the primary route drops out of the routing table.

Adım Adım Çözüm

1
Identify the administrative distance of the primary route protocol.
The primary path is learned via eBGP, which has a default administrative distance of 20.
A floating static route must be configured with an administrative distance higher than the primary path so it remains inactive until failure.
2
Determine the trailing numerical argument for the Cisco IOS static route command.
Appending 25 to the end of the `ip route` syntax sets the administrative distance of the static route to 25.
Cisco IOS uses the optional trailing distance parameter in the `ip route <prefix> <mask> <next-hop> [distance]` command syntax.

Anahtar Kavram

Floating Static Route Configuration and Administrative Distance
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Konular

Floating Static Routes

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