An administrator is managing a pair of core AOS-CX switches configured for VSX. Connected to this core are pairs of aggregation layer AOS-CX switches configured for VSX. OSPF is running between the aggregation and core layers. To speed up OSPF convergence, the administrator has configured BFD between the core and aggregation switches.
What is a best practice the administrator should implement to reduce CPU processing on the switches if a BFD neighbor fails?
To reduce CPU processing on the switches if a BFD neighbor fails, it is best practice to disable ICMP redirects. ICMP redirects can cause extra processing, especially when the BFD echo has a source and destination on the same subnet, leading to unnecessary CPU load. Disabling ICMP redirects helps prevent this issue and ensures smoother operation.
The question is ""What is a best practice the administrator should implement to reduce CPU processing on the switches if a BFD neighbor fails?" I think the Correct answer is A According to Study Guide: "In some cases, the ech could have a source and destination on the same subnet, which would usually trigger the switch to send an ICMP redirect. The extra processing can cause issues on the Switch. Disabling ICMP redirects prevenets these issues."
Correct answer is A
A is Correct
Page 415 Study Guide: It is also best practice to disable ICMP redirects on the switches that use BFD in echo mode. Before you enable OSPF BFD, you should disable ICMP redirects on the AOS- CX switch. In some cases, the echo could have a source and destination on the same subnet, which would usually trigger the switch to send an ICMP redirect. The extra processing can cause issues on the switch. Disabling ICMP redirects prevents these issues. [Aruba Networks]
B should be correct
the right answer is A (check the cloud's comment)
the Correct answer is A According to Study Guide