Table of Contents
Question
When would you use the qualified-next-hop statement with a static route?
A. You can use it to install the static route into different routing tables.
B. You can use it to send unwanted traffic to a null route.
C. You can use it to specify multiple next hops with different preferences.
D. You can use it to resolve the next hop if the next hop is not directly connected.
Answer
C. You can use it to specify multiple next hops with different preferences.
Explanation
The correct answer for the question is C. You can use the qualified-next-hop statement with a static route to specify multiple next hops with different preferences. This allows you to configure backup or load-balancing routes for a destination.
The qualified-next-hop statement is a substatement of the next-hop statement, which is used to define the next hop for a static route. The qualified-next-hop statement takes an IP address or interface name as an argument, and allows you to specify additional parameters such as preference, metric, and interface. The preference parameter determines the order in which the next hops are tried, with lower values being preferred over higher values. The metric parameter determines the cost of the route, which can be used by routing protocols such as OSPF or IS-IS to select the best route. The interface parameter specifies the outgoing interface for the next hop, which can be useful if the next hop is not directly connected or reachable through a single interface.
The other options are incorrect for the following reasons:
A. You can use it to install the static route into different routing tables. This is not true, because the qualified-next-hop statement does not affect the routing table in which the static route is installed. To install a static route into a different routing table, you need to use the routing-instance statement under the routing-options hierarchy.
B. You can use it to send unwanted traffic to a null route. This is not true, because the qualified-next-hop statement does not allow you to specify a null route as a next hop. To send unwanted traffic to a null route, you need to use the discard or reject keywords under the next-hop statement.
D. You can use it to resolve the next hop if the next hop is not directly connected. This is not true, because the qualified-next-hop statement does not perform any resolution of the next hop. To resolve the next hop if it is not directly connected, you need to use the resolve keyword under the next-hop statement.
Reference
- qualified-next-hop (Static Routes) | Junos OS | Juniper Networks
- Static Route Preferences and Qualified Next Hops | Junos OS | Juniper Networks
- Qualified Next Hops Juniper – My Blog (tutorialaja.com)
- qualified-next-hop (Access) | Junos OS | Juniper Networks
- Floating Static – Qualified Next-hop … | SRX (juniper.net)
- Configure a Next Hop IP Address for Static Routes – Cisco
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