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JN0-102 · Question #98

inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, = Both 172.23.10.0/24 [Direct/0] 21:59:56 >via ge-0/0/6.0 172.23.10.100/32 [Local/0] 22:00:10 Local

The correct answer is B. Configure a default static route. C. Configure a static route to 172.23.14.0/24.. Users cannot reach the 172.23.14.0/24 subnet because it lacks a specific route; adding either a direct static route for that subnet or a default static route would solve this problem.

Routing Fundamentals

Question

inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 172.23.10.0/24 *[Direct/0] 21:59:56 >via ge-0/0/6.0 172.23.10.100/32 *[Local/0] 22:00:10 Local via ge-0/0/6.0 172.23.12.0/24 *[Static/5] 00:01:36 >to 172.23.10.1 via ge-0/0/6.0 172.23.15.0/24 *[Static/5] 00:01:36 >to 172.23.10.1 via ge-0/0/6.0 Users are unable to access resources in the 172.23.14.0/24 subnet. Referring to the exhibit, which two actions would solve this problem? (Choose two.)

Options

  • AConfigure a separate routing instance.
  • BConfigure a default static route.
  • CConfigure a static route to 172.23.14.0/24.
  • DConfigure the existing routes to resolve the indirect next hop.

How the community answered

(51 responses)
  • A
    20% (10)
  • B
    43% (22)
  • D
    37% (19)

Why each option

Users cannot reach the 172.23.14.0/24 subnet because it lacks a specific route; adding either a direct static route for that subnet or a default static route would solve this problem.

AConfigure a separate routing instance.

Configuring a separate routing instance would isolate routing information and is not a suitable action for simply adding a missing route to the primary routing table (`inet.0`).

BConfigure a default static route.Correct

Configuring a default static route (`0.0.0.0/0`) would ensure that any traffic destined for subnets not explicitly in the routing table, including `172.23.14.0/24`, is forwarded to a specified next-hop, providing a catch-all solution.

CConfigure a static route to 172.23.14.0/24.Correct

The most direct solution is to configure a specific static route for `172.23.14.0/24` with the correct next-hop address, explicitly informing the router how to forward traffic to that particular subnet.

DConfigure the existing routes to resolve the indirect next hop.

The existing static routes already have resolved indirect next-hops, and modifying them would not help in routing traffic to the currently unreachable `172.23.14.0/24` subnet.

Concept tested: Missing route troubleshooting

Source: https://www.juniper.net/documentation/us/en/software/junos/static-routing/topics/topic-map/static-routes-configuring.html

Topics

#routing table analysis#static routes#troubleshooting routing#default route

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