Configuring Static Routes with Primary and Secondary Next-Hops

D

The correct command to configure a static route that uses 43.18.7.1 as its primary next-hop and 76.13.10.2 as its secondary next-hop is option D:

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set static route 0/0 next-hop 43.18.7.1 qualified-next-hop 76.13.10.2 preference 10 

Let's break down the command and its options:

• set static route : This sets up a static route configuration.
• 0/0 : This specifies the destination network for the static route. In this case, it is 0.0.0.0/0, which is the default route for all traffic.
• next-hop 43.18.7.1 : This sets 43.18.7.1 as the primary next-hop for the static route.
• qualified-next-hop 76.13.10.2 : This sets 76.13.10.2 as the secondary next-hop for the static route, to be used only if the primary next-hop is not available.
• preference 10 : This sets the preference value for the static route. A lower preference value indicates a more preferred route. In this case, a preference value of 10 is assigned.

Option A:

vbnetCopy code
set static route 0/0 76.13.10.2 qualified-next-hop 43.18.7.1 pref 10 

This command sets up a static route with 76.13.10.2 as the destination network, which is not correct. Moreover, the order of the primary and secondary next-hops is reversed.

Option B:

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set static route 0/0 next-hop 43.18.7.1 secondary-next-hop 76.13.10.2 preference 10 

This command incorrectly uses the "secondary-next-hop" option, which is not supported in Junos. Instead, the "qualified-next-hop" option should be used. Moreover, the order of the primary and secondary next-hops is reversed.

Option C:

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set static route 0/0 next-hop [76.13.10.2 10.10.10.5] pref 10 

This command incorrectly sets up a static route with two next-hops, which is not supported in this scenario. Moreover, the order of the primary and secondary next-hops is reversed.

Therefore, the correct command is option D:

vbnetCopy code
set static route 0/0 next-hop 43.18.7.1 qualified-next-hop 76.13.10.2 preference 10