IP SLA Questions
March 23rd, 2020
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Question 1
Question 2
Explanation
Although the IP SLA tracking has been configured but it needs to activate with the “start-time now” keyword. An example of configuring IP SLA for ICMP echo and start it immedicately is shown below:
| ip sla 2 icmp-echo 10.10.10.10 ! ip sla schedule 2 start-time now |
Question 3
Question 4
Explanation
The “debug ip routing” command enables debugging messages related to the routing table. Since the routing table is normally stable, you will only see debug messages when there are any changes in the routing table.
I see that question 1 is from old 301 CCNP route dumps and I have noticed that some of these other questions on here are from old dumps. @Networktut or anyone who has taken the test, can you confirm that these questions are actually on the ENARSI test or are old questions simply being reposted here?
Q3 is also from old version of CCNP route dumps
@networktut, Please correct q.4 here’s why
In the above examples, Debug IP routing will generate output only when the route is changing as per definition. Now as per the question the route has already changed so this command will not produce any output as the routing table is now stable.
in the above example debug ip sla error yields output about current errors in IP SLA operation.
@networktut, could you please respond to what @mbrz just said. thanks
I agree with @mbrz.
I think Q4 should be interpreted as follows
The default route is changed “only” when reachability to the Fa0/0 interface is lost.
However, the route has been changed to flow through router R2.
In other words, something went wrong with the configured IP SLAs and the default route was changed.
Therefore, to troubleshoot this problem, you should select “B. debug ip sla error”.