Refer to the exhibits.
Exhibit 1 -
Exhibit 2 -
Switch-1 and Switch-2 lost IP connectivity with each other. They did not detect the issue for several seconds and caused a temporary traffic disruption. The administrations expected failover to the backup route through Switch-3 to occur in less than a second. The administrators restore the failed link and view the output on Switch-1, shown in the exhibit.
What should they do to create the expected behavior if connectivity is lost again?
Switch-1 and Switch-2 lost IP connectivity and did not detect the issue for several seconds, causing temporary traffic disruption. To achieve the expected behavior of failover in less than a second, setting a BFD echo source IP address on each OSPF routing switch in VLAN 100 is necessary. This ensures that BFD operates efficiently in echo mode, which is vital for detecting failures quickly and facilitating fast failover.
I think correct answer is D
D is the answer.
router ospf area 0.0.0.2 area 0.0.0.3 area backbone enable exit bfd enable bfd echo-src-ip-address 2.2.2.2 vlan 20 untagged A1 bfd min-echo-receive-interval 700