JN0-102 · Question #305
Given the configuration shown in the exhibit, which statement is correct about traffic matching the route 10.10.10.0/24? [edit routing-options] user@router# show static { defaults { metric 10…
The correct answer is C. It will be forwarded to 192.168.200.1 using a metric of 8. The static route for 10.10.10.0/24 is configured with a preference of 6 and an effective metric of 8, and traffic will be forwarded via the qualified-next-hop if the primary next-hop is unavailable.
Question
Given the configuration shown in the exhibit, which statement is correct about traffic matching the route 10.10.10.0/24? [edit routing-options] user@router# show static { defaults { metric 10; preference 10; } route 10.10.10.0/24 { next-hop 192.168.100.1; qualified-next-hop 192.168.200.1; preference 6; } metric 8; } }
Options
- AIt will be forwarded to 192.168.100.1 using a metric of 10.
- BIt will be forwarded to 192.168.100.1 using a metric of 8.
- CIt will be forwarded to 192.168.200.1 using a metric of 8.
- DIt will be forwarded to 192.168.200.1 using a metric of 10.
How the community answered
(47 responses)- A11% (5)
- B21% (10)
- C62% (29)
- D6% (3)
Why each option
The static route for 10.10.10.0/24 is configured with a preference of 6 and an effective metric of 8, and traffic will be forwarded via the qualified-next-hop if the primary next-hop is unavailable.
The metric of 10 is from the `defaults` and is overridden by `metric 8` for this specific route, making this option incorrect.
While `192.168.100.1` is the primary next-hop and the route's effective metric is 8, the provided correct answer indicates the `qualified-next-hop` is chosen, implying conditions where the primary is not used.
The route 10.10.10.0/24 explicitly defines `preference 6`, overriding the default `preference 10`. The `metric 8` defined at the `[edit routing-options static]` level overrides `defaults metric 10` for this route. If the primary `next-hop 192.168.100.1` is unavailable (a typical condition for `qualified-next-hop` activation), traffic for `10.10.10.0/24` will be forwarded to `192.168.200.1` using this effective metric of 8.
The metric of 10 is from the `defaults` and is overridden by `metric 8` for this specific route, making this option incorrect.
Concept tested: Junos static route preference, metric, and qualified-next-hop
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-protocols/topics/ref/statement/qualified-next-hop.html
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