Exhibit -
[edit]
user@router# show routing-options
static {
router 0.0.0.0/0 {
next hop 10.10.10.1;
qualified-next hop 10.10.10.2 {
preference 6;
}
}
}
aggregate {
route 0.0.0.0/0;
}
generate {
route 0.0.0.0/0;
}
Based on the exhibit, how will traffic using the 0.0.0.0 route exit the device?
Click on the arrows to vote for the correct answer
A. B. C. D.B
Based on the exhibit, all traffic using the 0.0.0.0 route will exit the device using the route with the lowest route preference. In this case it is the static route 0.0.0.0 with a next hop of 10.10.10.1, which has the default route preference of 5.
The exhibit shows the configuration for routing options on a Juniper router. The configuration has three different routing types: static, aggregate, and generate.
The static routing configuration specifies a default route, i.e., a route for all traffic that does not match any other route in the routing table. The next-hop for this route is set to 10.10.10.1, which is the first choice for forwarding traffic.
However, the static routing configuration also specifies a qualified next-hop 10.10.10.2 for the same default route. The qualified next-hop has a preference of 6, which is a lower preference value than the default preference value of 7. The preference value determines the priority of the route. The lower the value, the higher the priority.
The aggregate routing configuration specifies a route for a summary of routes. In this case, the summary route is 0.0.0.0/0, which means all routes.
The generate routing configuration generates a default route.
Now, to answer the question, "how will traffic using the 0.0.0.0 route exit the device?", we need to analyze the routing table.
When the router receives traffic, it first checks the routing table for a matching route. If a matching route is found, the router uses that route to forward the traffic. If no matching route is found, the router uses the default route to forward the traffic.
In this case, there are multiple routes for the default route. The router can use the static route or the generated route for forwarding traffic. The static route has two next-hops, 10.10.10.1 and 10.10.10.2.
The next-hop 10.10.10.2 has a lower preference value than the default preference value, so it will be used only if the first next-hop is unavailable. Therefore, if the first next-hop 10.10.10.1 is available, the router will use that to forward the traffic.
The aggregate route does not have any next-hop information, so it cannot be used for forwarding traffic directly. It only summarizes other routes.
Therefore, the answer to the question is B. Traffic using the 0.0.0.0 route will exit the device using the next-hop 10.10.10.1 when available.